JPH06323605A - Computing equipment of discrete operation cost of air-conditioning equipment - Google Patents

Abstract

PURPOSE:To enable such computation of a discrete allotted cost as to enable fair allotment of a heat source operation cost to each load-side unit in air- conditioning equipment of a central air-conditioning system. CONSTITUTION:A plurality of load-side units A, B,... are disposed on a circulation route through which a secondary refrigerant supplied from a heat-source- side unit X circulates and flow control valves EVa, EVb,... for regulating the flow rate of the refrigerant are interposed for them respectively. By a relative consumption computing means, a rated capacity of each of the load-side units A, B,... is multiplied by a discrete operation time and the flow ratio of the secondary refrigerant, so as to calculated a relative consumption of it. By an allotted cost computing means, then, the operation cost of the heat-source-side unit X is divided proportionally by the relative consumption of each of the load-side units A, B,... so as to compute an allotted cost.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an individual operation cost calculation device for an air conditioner, and more particularly, to a central air conditioning system having a capacity which changes according to a flow rate change of a secondary refrigerant such as a fan coil unit and an air handling unit. Measures for calculating the individual usage amount of each load side unit in.

[0002]

2. Description of the Related Art Conventionally, as disclosed in Japanese Examined Patent Publication (Kokoku) No. 4-80298, a large number of use side heat exchangers arranged in a refrigerant circuit in which a refrigerant discharged from a compressor circulates are arranged in each room. In the multi-type air conditioner consisting of the following, the operating time and operating capacity of each heat exchanger on the use side are detected from the air volume of the indoor fan, thermo-on, thermo-off, etc., and the power consumption ratio for each heat exchanger on the use side is calculated. , The total power used for each cycle is detected from the operating capacity of the compressor, etc., it is proportionally divided by the power consumption ratio of each heat exchanger on the usage side, and this proportionally divided value is added, for example, in each room of one day. The power consumption integrating device of the air conditioner for integrating the individual power consumption of the air conditioning device is a known technique.

Further, as disclosed in, for example, Japanese Patent Publication No. 4-77215, in a central air conditioning system in which a plurality of fan coil units through which a secondary refrigerant (cooled / hot water, steam, brine, etc.) flows is used for cooling / heating, each fan is It is also known in the art to weight and integrate the operating states and integrate the usage amount of each fan coil unit.

[0004]

However, the former one of the above-mentioned conventional publications is applied to a system which is air-conditioned by a primary refrigerant, and is provided with a fan coil unit and an air handling unit as it is. It cannot be applied to a central air-conditioning system that uses a secondary refrigerant for air conditioning.

In the latter one of the above publications, the individual usage amount is calculated only based on the change in the air volume of the fan, and in the system for performing the capacity control by changing the flow rate of the secondary refrigerant, There is a problem that the integrated value cannot be calculated accurately.

The present invention has been made in view of the above points, and an object thereof is to allow a secondary refrigerant to flow from a central unit to each heat exchanger on the use side so that the heat source fluid in each heat exchanger on the use side is In the air conditioner in which the capacity control is performed by adjusting the flow rate, the relative usage amount of each usage-side heat exchanger is calculated in consideration of the flow rate of the secondary refrigerant, and the total usage amount of the air conditioning apparatus is calculated. By apportioning the relative usage of the heat exchanger on the use side, the operating cost of the air conditioner to be shared in each room can be accurately allocated.

[0007]

Means for Solving the Problems To achieve the above object, the means taken by the invention of claim 1 is, as shown in FIG. 1, a heat source side unit (X) for supplying a secondary refrigerant for air conditioning. A plurality of load side units (A) for exchanging heat between the secondary refrigerant and room air supplied from the heat source side units (X), ... to the circulation paths (3), ... through which the secondary refrigerant circulates. ),
(B), ... are connected in parallel, and the load side unit (A),
(B), ... A flow rate control valve (E for controlling the flow rate of the secondary refrigerant).
Va), (EVb), ... are premised on the air conditioner.

As shown by the solid line portion and the broken line portion in FIG. 1, heat source side cost calculating means for calculating the operating cost of the heat source side units (X), ... And the load side units (A), ( B), ..., Flow rate ratio detection means for detecting the flow rate ratio of the secondary refrigerant flowing through, and the load side units (A),
(B), ... The rated capacity setting means for presetting the rated capacity, and the operation time of each of the load side units (A), (B), ... in a predetermined operation time of the heat source side unit (X) ,. The load side units (A), (B) set by the rated capacity setting means by receiving the outputs of the individual operating time detecting means for detecting, the heat source side cost calculating means, the flow rate ratio detecting means and the individual operating time detecting means. ), ..., The product of the rated capacity of each load side unit (A), (B), ... And the flow rate ratio of the secondary refrigerant is calculated to calculate each load side unit (A), (B),
Relative usage calculation means for calculating the relative usage of ...
The load side unit (A), in which the calculated value of the heat source side cost calculation means is calculated by the relative usage amount calculation means,
(B), ... Proportionally divided by the relative usage amount, and a sharing cost calculating means for calculating a sharing cost of each load side unit (A), (B) ,.

The means taken by the invention of claim 2 is premised on the same air conditioner as the air conditioner of the invention of claim 1, and the same heat source side cost calculating means, flow rate ratio detecting means, and individual operating time. A detection means is provided. Further, as shown by the solid line portion and the one-dot chain line portion in FIG. 1 (not including the broken line portion), the inlet / outlet temperature difference of the secondary refrigerant flowing through each of the load side units (A), (B), ... Is detected. The load side unit (A) receives the outputs of the temperature difference detection means, the flow rate ratio detection means, the individual operation time detection means and the temperature difference detection means.
(B), ... Operating time, secondary refrigerant flow rate ratio, inlet / outlet temperature difference and specific heat product of the secondary refrigerant are calculated to calculate the relative usage amount of each load side unit (A), (B) ,. Relative usage amount calculating means to calculate, the calculated value of the heat source side cost calculating means,
Predetermined time of each load side unit (A), (B), ..., which is proportionally divided by the relative use amount of each load side unit (A), (B), ... And a sharing cost calculation means for calculating the sharing cost in.

According to a third aspect of the present invention, in the first or second aspect of the invention, the flow ratio detecting means is a flow control valve (EVa) of each load side unit (A), (B), .... ，
(EVb), ... The flow rate ratio is detected based on the opening degree.

The means taken by the invention of claim 4 presupposes an air conditioner similar to that of the invention of claim 1, and further,
As shown in FIG. 2, the load side units (A), (B), ... are connected to the load side units (A), (B) ,. Heat exchanger (FCa),
(FCb), ... Bypass pipes (4a), (4
b), ... And the load side heat exchangers (FCa), (FCb),
, And the bypass pipes (4a), (4b), ... Flow control valves (EVa), (EV) for variably adjusting the flow rate of the secondary refrigerant.
b), ... are provided.

Further, the same heat source side cost calculation means, rated capacity setting means and individual operation time detection means as those of the invention of claim 1 are provided, and further, bypass pipes (4a), (4b), ... In each branch pipe. The temperature difference detecting means for detecting the temperature difference before and after the branch with the output of the temperature difference detecting means and the individual operating time detecting means, and the load side units (A), (set by the rated capacity setting means, Of the load side units (A), (B), ... by calculating the product of the rated capacity of B), ..., The operating time of each load side unit (A), (B) ,. Relative usage amount calculation means for calculating the relative usage amount, and the calculation value of the heat source side cost calculation means,
Predetermined time of each load side unit (A), (B), ..., which is proportionally divided by the relative use amount of each load side unit (A), (B), ... And a sharing cost calculation means for calculating the sharing cost in.

According to the invention of claim 5, in the invention of claim 1 or 3, the load side unit (A),
An air flow fan having a variable air flow rate is attached to each of (B), ..., An air flow rate detecting means for detecting the air flow rate of each of the load side units (A), (B) ,. Correction means for receiving the output of the detection means and correcting the relative usage amount of each of the load side units (A), (B), ... Calculated by the relative usage amount calculation means based on the air flow rate ratio of the blower fan. Is provided.

According to a sixth aspect of the present invention, in the invention of the first, second, third, fourth or fifth aspect, the heat source side unit (X), ... Is a secondary cooling medium and a secondary heating medium. And a load side unit (A),
(B), ... Are individually configured to be capable of heating / cooling operation. Then, the heat source side cost calculation means is used as the heat source side unit (X), ...
The cost required for the cooling operation and the cost required for the heating operation are calculated individually, and the relative usage amount calculation means is composed of a load side unit group performing the cooling operation and a load side unit performing the heating operation. Divide into groups and calculate the relative usage in each group, and the sharing cost calculation means will divide the cost required for cooling operation by the relative usage of the load side unit group during cooling operation for heating operation. The cost is proportionally divided by the relative usage of the load side unit group during heating operation.

According to a seventh aspect of the invention, in the invention of the first, second, third, fourth or fifth aspect of the invention, the heat source side unit (X), ... Is cooled by a common energy source. And the secondary refrigerant for heating are supplied, and the load side units (A), (B), ... Are individually configured to be capable of cooling / heating operation. Then, the heat source side cost calculation means calculates the cost required for the cooling operation and the heating operation at the same time, and the relative usage amount calculation means performs the heating operation with the load side unit group performing the cooling operation. The load side unit group is divided into two groups, and the load side unit during cooling and the load side unit during heating are weighted differently to calculate the relative usage amount in each group.

In the invention of claim 8, in the invention of claim 1, 2, 3, 4 or 5, the heat source side unit (X), ... Is a secondary cooling medium and a secondary heating medium. A cooling heat exchanger through which a secondary cooling refrigerant flows and a heating heat through which a secondary heating refrigerant flows through at least one load-side unit (A), (B), ... It is configured to include a switch. Then, the relative usage amount calculating means individually calculates the relative usage amounts of the cooling heat exchanger and the heating heat exchanger of the load side units (A), (B), ... The calculation means individually calculates the cost required for the cooling operation and the cost required for the heating operation, and the shared cost calculation means is the load side unit (A),
The relative use amount of the cooling heat exchangers of (B), ... Is incorporated into the load side device group during the cooling operation, and the relative use amount of the heating heat exchanger is incorporated into the load side device group during the heating operation, After dividing the operating cost of the heat source side unit (X), etc. for each load side heat exchanger by cooling and heating to calculate the sharing cost, add the sharing cost of the load side heat exchanger in the same load side unit to each load The shared cost of the side units (A), (B), ... Is calculated.

According to a ninth aspect of the present invention, in the invention of the first, second, third, fourth or fifth aspect, the heat source side unit (X), ... Is cooled by a common energy source as a secondary refrigerant. And a secondary refrigerant for heating are supplied. Then, the heat source side cost calculation means collectively calculates the costs required for the cooling operation and the heating operation, and at least one load side unit (A), (B), ... The cooling heat exchanger that circulates and the heating heat exchanger through which the secondary heating refrigerant flows circulate.

Further, the relative usage amount calculating means individually determines the relative usage amounts of the cooling heat exchanger and the heating heat exchanger of the load side units (A), (B) ,. The sharing cost calculation means is used as the load side unit (A),
The relative use amount of the cooling heat exchangers (B), ... Is incorporated into the load side device group during the cooling operation, and the relative use amount of the heating heat exchanger is incorporated into the load side device group during the heating operation. The operating cost of the heat source side unit (X), ... Is weighted differently for the cooling heat exchanger and the heating heat exchanger, and is divided into cooling and heating for each load side heat exchanger to calculate the sharing cost, and then the same load The share cost of the load side heat exchanger in the side unit is added to calculate the share cost of each load side unit (A), (B), ....

According to a tenth aspect of the present invention, the heat source side cost calculating means and the relative usage amount calculating means in the above-mentioned first, second, third, fourth, fifth, sixth, seventh, eighth and ninth aspects are provided. Of the heat source side cost calculation means and the relative usage amount calculation means are integrated for a predetermined reference time, and the shared cost calculation means is used for the above-mentioned reference time. Each load side unit (A),
The amount of use of (B), ... Is proportionally calculated.

According to the invention of claim 11, in the invention of claim 1, 2, 3, 4, 5, 6, 7, 8 or 9, the heat source side cost calculating means is always operated. The relative usage amount calculation means is operated at a fixed time interval, and the sharing cost calculation means is multiplied by the calculation value of the relative usage amount calculation means by the fixed time interval and added, which is longer than the fixed time. While obtaining the integrated value at the reference time, the value obtained by integrating the calculated value of the heat source side cost calculating means for the reference time is added at the reference time of the relative usage amount of each load side unit (A), (B), .... The values are to be prorated.

According to a twelfth aspect of the present invention, in the above-mentioned first, second, third, fourth, fifth, sixth, seventh, eighth or ninth aspect of the invention, the relative usage amount calculating means is provided at fixed time intervals. Assuming that the operating cost is calculated, the sharing cost calculation means multiplies the calculated value of the relative usage amount calculation means by the fixed time interval and sums up the usage amounts of the load side units (A), (B) ,. And the relative usage amount are calculated, and the calculated value for the fixed time by the heat source side cost calculation means is proportionally divided by the relative usage amount, and at each fixed time of each load side unit (A), (B), ... Is calculated and integrated for a reference time longer than the fixed time.

[0022]

With the above construction, in the invention of claim 1, the air conditioner for air conditioning of the load side units (A), (B), ... When the amount calculation means calculates the relative usage amount of each load side unit (A), (B), ... From the product of the flow rate ratio of the secondary refrigerant, the operating time, and the rated capacity, the sharing cost calculation means Since the operating cost of the heat source side unit (X) is proportionally divided by the relative usage amount of each load side unit (A), (B), ..., Each load side unit (A), (B) of the secondary refrigerant, Incorporating the flow rate ratio to each load side unit (A),
The operating cost of the heat source side unit (X) to be shared by (B), ... Is calculated. Therefore, the sharing cost of each load side unit (A), (B), ... Is evaluated accurately.

According to a second aspect of the present invention, in the above-mentioned first aspect of the invention, the sharing cost calculating means adds the flow rate ratio of the secondary refrigerant, and heat exchange before and after heat exchange in each of the load side units (A), (B) ,. Also, the sharing cost of each unit (A), (B), ... Is calculated by incorporating the temperature difference of the secondary refrigerant. That is, the operating cost of the heat source side unit is prorated by the relative usage amount based on the actual capacity rather than the rated capacity of the load side unit, and the sharing cost is evaluated more accurately.

In the invention of claim 3, the above-mentioned claim 1 or 2
In the invention of claim 1, the flow rate ratio of the secondary refrigerant is such that each flow control valve (E
Va), (EVb), ... are detected, so that the flow rate ratio of the secondary refrigerant can be detected simply and quickly.

According to the invention of claim 4, in each of the load side units (A), (B), ..., Bypass pipes (4a), (4b) ,.
By adjusting the flow rate to (FCb), ..., the capacity adjustment of each load side unit (A), (B), ... becomes fine, and the temperature sensor can be used without arranging an expensive flow meter. The sharing cost of the load side units (A), (B), ... Is calculated accurately.

According to the fifth aspect of the invention, in the air conditioner in which the air volume of the blower fan is variable, the calculation value of the sharing cost calculation means is further corrected by the correction means with the air volume ratio of each blower fan. Therefore, the accuracy of the calculated sharing cost is improved.

According to a sixth aspect of the present invention, in the first to fifth aspects of the invention, while individually cooling and heating according to conditions such as installation states of the load side units (A), (B) ,. The heat source side unit (X),
Since the cost required for the cooling operation and the cost required for the heating operation are apportioned separately, even in the air conditioner in which the heating and cooling can be individually switched, each load side unit (A),
The shared cost of (B), ... Is calculated accurately.

According to a seventh aspect of the present invention, in the first to fifth aspects of the invention, the heat source side units (X), ... Are operated with common energy, and the heat source side units (X) ,. The configuration of becomes simple. Then, even in the case where the load-side heat exchangers perform simultaneous cooling and heating with such a simple configuration, the sharing costs of the load-side units (A), (B), ... Are accurately calculated.

According to an eighth aspect of the invention, in the above-mentioned first to fifth aspects, the temperature control is performed in the load side units (A), (B), ... Incorporating the cooling heat exchanger and the heating heat exchanger. It is possible to perform good air conditioning operation and dehumidification operation that keeps room temperature properly, but while performing such delicate air conditioning, the sharing cost of each load side unit (A), (B), ... Is calculated accurately. Will be.

According to a ninth aspect of the present invention, in the above-mentioned first to fifth aspects, the heat source side units (X), ... Are operated with common energy, and the heat source side units (X) ,. In addition to the simple structure, the load side units (A), (B), ... Incorporating the cooling heat exchanger and the heating heat exchanger have properly controlled the air-conditioning operation and the room temperature. Dehumidification operation etc. becomes possible. Then, the shared cost of each load side unit (A), (B), ... Is accurately calculated while performing such delicate air conditioning.

According to the invention of claim 10, above-mentioned claims 1 to 9 are provided.
In the present invention, the shared cost calculation means integrates the calculation values of the heat source side cost calculation means and the relative usage amount calculation means for each reference time, for example, for one day, and based on the integrated value, each load side unit (A) , (B), ... The operating costs of the heat source side units (X), ... Which should be shared are calculated, so that an accurate sharing cost is calculated.

According to the invention of claim 11, above-mentioned claims 1 to 9 are provided.
In the invention of claim 1, the load side unit (A),
(B), the relative usage amount of the heat source side unit (X), ... Is proportionally calculated by the sharing cost calculation means by integrating the relative usage amount for a reference time of about one day. By doing so, each load side unit (A),
(B) ... The operating costs to be paid are calculated. Therefore, each load side unit (A),
The shared cost of (B), ... Is calculated.

According to the invention of claim 12, above-mentioned claims 1-9
In the invention of claim 1, by the sharing cost calculation means, each load side unit (A),
(B), ... The shared expenses are calculated, and the accumulated expenses are added up to calculate the shared expenses for the reference time of about one day, for example. That is, since the sharing cost of each load side unit (A), (B), ... Is calculated for a short fixed time,
The accuracy of calculation is particularly high.

[0034]

Embodiments of the present invention will be described below with reference to the drawings starting from FIG.

(First Embodiment) First, the first embodiment will be described. FIG. 3 shows a piping system of the air conditioner in the first embodiment, where (X) is a chiller that is a heat source side unit installed in the center of the air conditioner and for supplying cold water as a secondary refrigerant. ) Is its power source, and (2) is an integrated power meter as a total usage amount detecting means for integrating the total power usage of the chiller (X) and the like. Further, the cold water of the chiller (X) is forcedly circulated to the cold water circulation circuit (3) by the pump (P), and the cold water circulation circuit (3) has a load side unit for cooling each room to be air-conditioned. , Fan coil units (A), (B), ... Are installed. Each fan coil unit (A) has a fan coil (FCa)
And a two-way electric valve (EVa) as a flow rate control valve whose opening degree is electrically adjusted by a pulse motor, and a flow meter (Ga) for detecting the flow rate of cold water. Each of the fan coil units (A), (B), ...
), (Gb), ... Comprises a flow ratio detecting means for detecting the cold water flow ratio of each unit. In the cold water circulation circuit (3), a bypass pipe (4) for bypassing a part of the cold water is provided via a two-way electric valve (EVx) to avoid excess capacity.

Here, each of the fan coil units (A), (B), ... Has a different rated capacity based on the difference in the heat transfer area, the air volume of the blower fan, etc., so that the cooling capacity is the same even with the same cooling water flow rate. different. Therefore, a table for setting the relationship between the chilled water flow rate and the cooling capacity is set in advance for each fan coil (FCa) (for example, Table 1 below). This table constitutes the rated capacity setting means according to the invention of claim 1. For more accuracy, either one or both of the capacity correction by the room temperature and the cold water inlet temperature may be performed.

[0037]

[Table 1]

[Table 2] Further, the operating time of each fan coil unit (A), (B), ... Is detected by the on / off of a blower fan, a signal of a controller (not shown), etc. The individual operation time detection means referred to in (1) is configured.

That is, the product of the rated capacity of each fan coil unit (A), (B), ... By this calculation, the relative usage amount calculation means according to the invention of claim 1 is configured. Then, by apportioning the total usage amount detected by the integrated wattmeter by the relative usage amount of each fan coil unit (A), (B), ...
The individual usage amount of each fan coil unit (A), (B), ... Is calculated. By this calculation, the sharing cost calculation means according to the invention of claim 1 is configured.

Therefore, in the first embodiment, the flow rate ratio of the cold water which is the secondary refrigerant is thus detected, and the fan coil units (A), (B), ... Are considered in consideration of this flow rate ratio.
Since the individual usage amount of each unit is calculated, the operating cost to be shared by each unit (A), (B), ... Is accurately calculated.

Next, a specific method of calculating the individual usage amount of the air conditioner in the first embodiment will be described.

The air conditioning capacities of the respective fan coil units (load side units) (A), (B), ... And the input energy amount of the heat source unit (X) are constantly calculated and integrated to obtain a reference time (for example, 24 hours). Sum them up for each. At this time, the capacity integrated value of each fan coil unit (A), (B), ... And
Calculate the ratio of the usage amount of each fan coil unit (A), (B), ... to the total of the integrated values of the fan coil units (A), (B), ..., and calculate the ratio of this usage amount. Multiplying the energy integrated value (or operating cost integrated value), that is, the operating cost is apportioned, the energy amount (or operating cost) of each fan coil unit (A), (B), ... Is calculated and used individually. Impose a fee.

Each fan coil unit (A),
The air-conditioning capacity of (B), ... Is measured and calculated at regular intervals (for example, 10 minutes), and the measurement interval time is multiplied and added to total. As a result, each fan coil unit (A),
(B), The relative amount of use in a fixed time is calculated.
Then, for each reference time (for example, 24 hours), the individual fan coil units (A) with respect to the total sum of the capacity integrated values,
(B), individual fan coil units (A),
The energy integrated value (or operating cost integrated value) is multiplied by the ratio of the integrated values of (B), ..., That is, the operating cost is proportionally divided, and the energy amount of each fan coil unit (A), (B) ,. Or calculate the operating cost) and charge the usage fee individually.

Each fan coil unit (A),
The air-conditioning capacity of (B), ... Is measured and calculated at regular intervals (for example, 10 minutes), and the sum of the values multiplied by the measurement interval time is calculated. Then, the ratio of the value of the air-conditioning capacity of each fan coil unit (A), (B), ... To this total, that is, the relative amount of use, is multiplied by the energy integrated value (or the operating cost integrated value) for the given period of time. Then, the amount of energy (or operating cost) of each unit (A), (B), ... Is calculated, and this is integrated to impose a usage fee. With this method, more accurate individual usage amount can be calculated than with the above method.

The above methods (1) to (4) can be similarly applied to the following embodiments.

The flow control valve is not limited to the two-way motorized valve, but a three-way motorized valve may be used. Figure 4
Shows a piping system of an air conditioner according to a modified example of the first embodiment, and the basic structure is the same as the structure shown in FIG. 3, but in this modified example, each fan coil unit (A),
The flow control valves located at (B), ... Are three-way motorized valves (EV
a ′), (EVb ′), ..., One port of each of which is connected to the return side to the chiller (X), and the cooling water supply amount to each fan coil (FCa), (FCb) ,. It is designed to adjust the bypass amount. Therefore, in this modified example, the bypass pipe (4) and the two-way electric valve (EVx) as in the configuration shown in FIG. 2 are unnecessary.

Further, in the first embodiment, since the water chiller driven by the electric motor is used as the heat source unit (X), the power supply device (1) and the integrating wattmeter (2) are arranged. It is needless to say that the heat source unit (X) is not limited to this example, and a gas boiler, an electric water heater, a heat engine heat pump such as an absorption heat pump, or the like may be used. For example, when using composite energy (gas + electricity) such as a gas engine driven heat pump, there is a method in which the usage amount of each load side unit is proportionally distributed for each energy or the total operating cost is proportionally distributed. This also applies to all the following examples.

(Second Embodiment) Next, a second embodiment will be described.

FIG. 5 shows the piping system of the air conditioner according to the second embodiment, and the basic construction is the same as that of the first embodiment (see FIG. 3), but in the second embodiment, each The fan coil unit (A), (B), ...
Ca), (FCb), ... Inlet temperature sensor (Thia), (Thib), which detects the inlet temperature of the cold water, and outlet temperature sensor (Thoa), (Thob) which detects the outlet temperature.
), ... are arranged. The mounting position of each sensor is not necessarily limited to the illustrated position,
In order to reduce the influence of the temperature distribution in the cold water pipe, it is desirable to keep the inlet temperature at a sufficient distance from the branch portion and the outlet temperature at a sufficient distance from the heat exchanger. However, if necessary, a mixing chamber as shown in FIG. 6 may be used. Further, since the values of the inlet temperatures at the respective branch parts are almost the same, any one of them may be represented, and the mounting position at that time is before the branch (for example, the branch point with the bypass pipe (4) in the figure). In the vicinity). Alternatively, it is sufficient if the water temperature difference before and after the fan coils (FCa), (FCb), ... Can be detected, so for example, thermocouples having inlets and outlets as contacts are used for the respective fan coils (FCa), (FCb), It is also possible to use a pair for ...

In the second embodiment, the relative capacity (relative usage amount) of each fan coil unit (A), (B), ... Is determined by the inlet / outlet temperature difference, the flow rate of cold water, and the specific heat of cold water. Calculate by multiplying. At that time, as a specific calculation method, any one of to in the first embodiment may be used. Compared to the first embodiment, in this embodiment, the actual capacity of each fan coil (FCa), (FCb), ... Is calculated more accurately by considering the temperature difference between the inlet and outlet of cold water rather than the rated capacity. There is an advantage that you can.

(Third Embodiment) Next, a third embodiment will be described. FIG. 7 shows a piping system of an air conditioner according to a third embodiment, and the basic configuration is almost the same as that of the second embodiment (see FIG. 5), but in this embodiment, each three-way electric valve is used. One port of (EVa ′), (EVb ′), ... Is connected to each branch coil of the fan coils (FCa), (FCb) ,. Further, no flow meter is arranged, and in each fan coil unit (A), (B), ..., By-pass valves (4a), (4
b), ... Just before branching to the inlet temperature sensor (Thia
), (Thib), ..., Each of the bypass pipes (4a),
Outlet temperature sensors (Thoa), (Thob), ... Are attached to the outlet branch pipes after joining with (4b) ,. As in the second embodiment, there are other variations in the attachment position and the number of attachments.

In the present embodiment, the sum of the inflow amount and the bypass amount of the cold water can be regarded as constant regardless of the openings of the three-way motorized valves (EVa '), (EVb'), ... ), (B), ... For each fan coil unit (A), (B), by multiplying the flow rate sum known in advance for each rated capacity by the temperature difference between the inlet temperature and the post-merging temperature, and the specific heat.
The relative ability of… can be calculated. The specific calculation method is
According to the method (1) in the first embodiment.

This embodiment has an advantage that the individual usage amount of each fan coil (A), (B), ... Can be accurately calculated without using an expensive flow meter.

(Fourth Embodiment) Next, a fourth embodiment will be described. In this embodiment, the configuration of the piping system of the air conditioner is the same as that of the first embodiment described above, so the description thereof will be omitted. Here, in this embodiment, a fan coil (FCa),
(FCb), ... And a table of cooling water flow rate and cooling capacity is provided in advance for each tap of the fan whose air flow rate is variable, and the operating cost is proportionally divided according to the air flow rate. A tap switching method is used to adjust the air flow rate. However, it goes without saying that an inverter motor, a DC servo motor, an AC phase control motor, or the like that can linearly control the rotation speed may be used. Further, the air volume may be adjusted by the opening degree of the damper at the air outlet.

In this embodiment, when the total usage amount is apportioned by the relative usage amount of each fan coil unit (A), (B), ..., The relative usage amount is calculated in consideration of the air amount of each blower fan. Will be done. In this way, more accurate individual operating costs can be calculated by considering the air volume of the blower fan.

(Fifth Embodiment) Next, a fifth embodiment will be described. FIG. 8 shows a piping system of an air conditioner according to a fifth embodiment. In this embodiment, a hot water boiler (Y) is arranged as a heat source unit in addition to the chiller (X) in each of the above embodiments, and a chiller ( X) and hot water boiler (Y)
Integrated wattmeters (2x), (2y) and a gas meter (6) are provided. Further, a hot water circulation path (5) through which hot water supplied from the hot water boiler (Y) circulates is provided in parallel with the cold water circulation path (3). Then, on the inlet side and the outlet side of the secondary refrigerant for air conditioning of the five fan coil units (A) to (E), three-way switching valves (SVa1, Sva2), (SVb1,) for switching the supply water between cold water and hot water are provided. Svb2),
... is arranged. However, this 3-way switching valve (SVa1
, Sva2), (SVb1, Svb2), ... In the figure, Δ indicates the open side and ▲ indicates the closed side. That is, in the state shown in FIG. 7, the fan coil units (A) to
In (C), cooling is performed by the fan coil unit (D),
In (E), heating is performed individually. Although the flow meter, the temperature sensor, and the like shown in FIG. 3 and the like are omitted in FIG. 8, they can be selectively used depending on the calculation method.

In this embodiment, the fan coil unit groups (A) to (C) that are performing cooling and the fan coil unit groups (D) and (E) that are performing heating are separately operated. The cost is apportioned. The specific calculation method is basically the same as that of each of the above-described embodiments, and thus the details are omitted. Therefore, there is an advantage that an accurate individual operating cost can be calculated even for the individual cooling / heating operation.

(Sixth Embodiment) Next, a sixth embodiment will be described. FIG. 9 shows a piping system of an air conditioner according to a sixth embodiment. In this embodiment, the basic configuration is the above fifth embodiment.
It is similar to the fifth embodiment, but differs from the fifth embodiment only in that the heat source unit (Z) can simultaneously generate cold and hot water with the same energy. Therefore, the respective two-way valves and the bypass pipes are provided with the reference numerals different from those in the fifth embodiment, but basically have the same functions, and the description thereof will be omitted.

In the present embodiment, the fan coil unit groups (A) to (C) performing the cooling operation and the fan coil unit groups (D) and (E) performing the heating operation are separately provided. The amount of heat used is calculated, and the amount of heat used in one of the fan coil unit groups (A) to (C) during cooling or the fan coil unit groups (D) and (E) during heating is multiplied by a certain ratio, that is, Each group is weighted differently to apportion operating costs.

This embodiment has an advantage that it can be applied to an air conditioner configured to supply a secondary refrigerant for cooling and heating by a common heat source unit. However, the configuration of this heat source unit is not limited to the above embodiment,
For example, the exhaust heat may be used for generating hot water, such as a gas engine driven heat pump or a heat driven heat pump.

A concrete calculation method will be described as an example of the weighting. For example, in Table 1 above, the power consumption is 38.8 Kw for the rated capacity of 81,000 Kcal (bold frame in the table) during cooling alone operation at 50 Hz, so the coefficient of performance (C
OP) is 81000 / (38.8 × 860) = 2.43. On the other hand, in Table 2, the electric power is 3 for the rated capacity of 90,000 Kcal (bold frame portion in the table) during the independent heating operation.
Since it is 9.6 Kw, the coefficient of performance (COP) is 90000 / (39.6 × 860) = 2.64. From the above, the heating capacity is multiplied by 2.43 / 2.64 = 0.92 and weighted. Further, in order to ensure accuracy, the coefficient of performance COP corresponding to the actual measured values of the outside air temperature and the inlet / outlet water temperature is obtained from the performance characteristics and similarly weighted, so that the accuracy is improved.

As a second example of weighting, in Table 3 below, the rated capacity ratio (bold frame portion in the table) 81000/107000 = 0.76 of simultaneous cooling and heating operation is calculated, or the characteristic under actual operating conditions is calculated. The capacity ratio is calculated as a value, and the heating capacity is multiplied by this to perform weighting. This method is also effective for generating hot water by utilizing exhaust heat, such as a gas engine driven heat pump.

[0062]

[Table 3] (Seventh Embodiment) Next, a seventh embodiment will be described. FIG. 10 shows a piping system of an air conditioner according to a seventh embodiment, and as a heat source unit, a chiller (X) and a hot water boiler (Y) are arranged as in the fifth embodiment. The difference from the fifth embodiment is that, in this embodiment, each of the cold water circulation path (3) and the hot water circulation path (5) has a three-way motorized valve (Eva1), (Eva2) in each fan coil unit. (A), (B), ... Arranged for each fan coil, and each fan coil (A), (B), ... has two heat exchangers for cold water and hot water. It is a fan coil. With such a configuration, delicate air conditioning can be performed, and dehumidifying operation without room temperature change is possible.

In this embodiment, the operating costs of the fan coil units (A), (B), ... Are apportioned separately for the hot and cold water.
Therefore, the present embodiment has an advantage that it can be applied to such a four-tube fan coil.

The fan coil unit (A),
It goes without saying that a terminal air handling unit capable of simultaneously generating cold air and warm air instead of (B), ... Can be similarly applied.

(Eighth Embodiment) Next, an eighth embodiment will be described. FIG. 11 shows a piping system of an air conditioner according to the eighth embodiment, which differs from the seventh embodiment in that the heat source unit is a heat recovery heat pump chiller (Z). In this case, of the fan coil units (A), (B), ..., Which uses cold heat and which uses warm heat, the amount of heat used is calculated separately, and the fan coil or the cooling during heating is calculated. The operating cost of any one of the fan coils is multiplied by a certain ratio, that is, different weighting is applied to apportion the operating cost.

Therefore, the ninth embodiment has an advantage that it can be applied to the air conditioner configured to supply the secondary refrigerant for cooling and heating by the common heat source unit.
However, the configuration of this heat source unit is not limited to the above-described embodiment, and exhaust heat may be used to generate hot water, such as a gas engine drive heat pump or a heat drive heat pump. Further, as the weighting method, any of the methods described in the seventh embodiment can be applied.

[0067]

As described above, according to the first aspect of the invention, the secondary refrigerant supplied from the heat source side unit is circulated to the plurality of load side units, and the flow rate control valve is arranged.
In an air conditioner configured to control the flow rate of the secondary refrigerant, the flow rate ratio of the secondary refrigerant to each load side unit is detected, and the relative capacity calculation means operates the rated capacity and operation of each load side unit. Calculate the relative usage amount of each load side unit by multiplying the time and the flow rate ratio, and divide the operating cost of the heat source side unit by the relative usage amount by the sharing cost calculation means, Since the operating cost of the heat source side unit to be shared is calculated, it is possible to calculate the sharing cost of each load side unit that also incorporates the flow rate ratio of the secondary refrigerant to each load side unit. The cost can be evaluated accurately.

According to the invention of claim 2, the secondary refrigerant supplied from the heat source side unit is circulated to the plurality of load side units, and the flow rate control valve is arranged to control the flow rate of the secondary refrigerant. In the air conditioner described above, the flow rate ratio of the secondary refrigerant to each load side unit and the inlet / outlet temperature difference are detected,
The relative usage amount calculation means calculates the relative usage amount of each load side unit by multiplying the individual operation time of each load side unit by the flow rate ratio and the inlet / outlet temperature difference, and the sharing cost calculation means calculates the heat source side unit. Since the operating cost of each heat source side unit should be shared by each load side unit by proportionally dividing the operating cost of each load side unit, it is not the rated capacity of each load side unit but the secondary before and after heat exchange. By calculating the actual capacity based on the temperature difference of the refrigerant, the sharing cost can be evaluated more accurately.

According to the invention of claim 3, in the invention of claim 1 or 2, the flow rate ratio of the secondary refrigerant is detected from the opening of each flow rate control valve. The flow rate ratio of the next refrigerant can be detected simply and quickly, and the calculation can be speeded up.

According to the fourth aspect of the invention, the secondary refrigerant supplied from the heat source side unit is circulated to the plurality of load side units, and the bypass pipe for bypassing the load side heat exchanger is provided in the branch pipe of each load side unit. In the air conditioner configured to control the flow rate of the secondary refrigerant to the heat exchanger side and the bypass pipe side by the flow control valve, before and after branching with the bypass pipe in the branch pipe of each load side unit. The temperature difference of the secondary refrigerant is detected, and the relative usage amount calculation means
The relative usage amount of each load side unit is calculated by multiplying the rated capacity and operating time of each load side unit by the temperature difference of the secondary refrigerant, and the operating cost of the heat source side unit is calculated by the shared cost calculation means. Since the operating cost of the heat source side unit that should be shared by each load side unit is calculated by apportioning the total usage amount, the share cost of each load side unit can be calculated accurately without using an expensive flow meter. can do.

According to a fifth aspect of the invention, in the air conditioner according to the first or third aspect of the invention, in which the air volume of the blower fan arranged in the load side unit is variable,
Since the calculation value of the sharing cost calculating means is corrected by the air volume ratio of each blower fan, the accuracy of the sharing cost is improved.

According to the invention of claim 6, the above-mentioned claims 1 to
In the fifth aspect of the invention, according to the conditions such as the installation state of each load side unit, the cost is divided into the cost required for the cooling operation of the heat source side unit and the cost required for the heating operation by the sharing cost calculating unit while individually performing the cooling and heating. Therefore, even in the air conditioner in which the cooling and heating can be individually switched, the sharing cost of each load side unit can be accurately calculated.

According to the invention of claim 7, the above-mentioned claims 1 to
In the invention of claim 5, the load side units can be individually cooled and heated, and the heat source side units can be operated by a common energy source, and the operating cost of the heat source side units calculated collectively can be reduced by the load during cooling operation. Since the side unit group and the load side unit group in the heating operation are weighted differently and distributed proportionally, it is possible to simplify the configuration of the heat source side unit and the heat source side cost calculation means, and The shared cost can be calculated accurately.

According to the invention of claim 8, the above-mentioned claims 1 to
In the invention of claim 5, the cooling secondary refrigerant and the heating secondary refrigerant are supplied from the heat source side unit, and at least one load side unit has a cooling heat exchanger and a heating heat exchanger built therein. Together, the operating cost of the heat source side unit is calculated for each heating and cooling unit, the usage amount of each load side unit is divided into a device group for cooling operation and a device group for heating operation, and the relative usage amount of each device is calculated, Since the operating cost of the heat source side unit is apportioned individually for the devices that are in heating / cooling operation, the shared cost of each load side unit is calculated by adding it up for each unit of the same load side. It is possible to accurately calculate the sharing cost of each load side unit while performing the air conditioning operation or the dehumidifying operation in which the room temperature is appropriately maintained.

According to the invention of claim 9, the above-mentioned claims 1 to
In the invention of claim 5, the cooling secondary refrigerant and the heating secondary refrigerant are supplied from the heat source side unit with common energy, and at least one load side unit incorporates the cooling heat exchanger and the heating heat exchanger. In addition to the above, the operating cost of the heat source side unit is calculated collectively for heating and cooling, and the heat exchanger of each load side unit is divided into a load side device group during cooling operation and a load side device group during heating operation. The operating cost of the heat source side unit is calculated by dividing the operating cost of the heat source side unit by different weighting for the cooling heat exchanger and the heating heat exchanger, and the sharing cost of each heat exchanger is calculated. Since the shared cost of each load side unit is calculated by adding up for each unit, the configuration of the heat source side unit and the heat source side cost calculation means becomes simple, and the heat exchanger for cooling and the heat exchanger for heating are exchanged. Built-in vessel While delicate conditioning in load-side unit, a shared cost of each load-side unit can be accurately calculated.

According to the invention of claim 10, above-mentioned claim 1
In the inventions of 9 to 9, in the sharing cost calculating means, the operating cost and the relative usage amount of the heat source side unit are integrated with respect to the reference time, and based on the integrated value, the heat source side unit to be shared by each load side unit Since the operating cost is calculated, it is possible to accurately calculate the sharing cost of each load side unit.

According to the invention of claim 11, the above-mentioned claim 1
In the inventions of 9 to 9, the relative amount of use of each load side unit is calculated at regular time intervals, and the amount of use of the heat source side unit is proportionally divided by integrating the relative amount of use for the reference time, and each load side unit is calculated. Since the burden cost of each load side unit is calculated, the burden cost of each load side unit can be calculated with a relatively simple configuration.

According to the invention of claim 12, the above-mentioned claim 1
In the inventions of 9 to 9, since the sharing cost of each load side unit is calculated for every fixed time and the sharing cost for the reference time is calculated by adding up it, the sharing cost of each load side unit is calculated for each short fixed time. By calculating the sharing cost, the effect of improving the calculation accuracy can be remarkably exhibited.

[Brief description of drawings]

FIG. 1 is a block diagram showing a basic configuration of the inventions of claims 1 and 2.

FIG. 2 is a block diagram showing the basic configuration of the invention of claim 4;

FIG. 3 is a piping system diagram of the air conditioning apparatus according to the first embodiment.

FIG. 4 is a piping system diagram of an air conditioner according to a modification of the first embodiment.

FIG. 5 is a piping system diagram of an air conditioner according to a second embodiment.

FIG. 6 is a cross-sectional view showing a configuration example of a mixing chamber.

FIG. 7 is a piping system diagram of an air conditioner according to a third embodiment.

FIG. 8 is a piping system diagram of the air-conditioning apparatus according to the fifth embodiment.

FIG. 9 is a piping system diagram of the air-conditioning apparatus according to the sixth embodiment.

FIG. 10 is a piping system diagram of an air conditioner according to a seventh embodiment.

FIG. 11 is a piping system diagram of an air conditioner according to an eighth example.

[Explanation of symbols]

 1 power source 2 integrated wattmeter (heat source side operating cost calculation means) 3 cold water circulation path 4 bypass pipe 5 hot water circulation path A, B, ... Fan coil unit (load side unit) X chiller (heat source side unit) Y hot water boiler (heat source) Side unit) Z heat recovery heat pump chiller (heat source side unit) FC fan coil EV motorized valve (flow control valve) SV three-way switching valve Thi inlet temperature sensor Rho outlet temperature sensor G flow meter

Claims (12)

[Claims] 1. A heat source side unit (X), ..., Supplying a secondary refrigerant for air conditioning, and a circulation path (3), ... through which the secondary refrigerant circulates, from the heat source side unit (X) ,. A plurality of load side units (A), (B), ... Which perform heat exchange between the supplied secondary refrigerant and room air are connected in parallel, and the load side units (A), (B) ,. In an air conditioner having flow control valves (EVa), (EVb), ... For controlling the flow rate of the next refrigerant, heat source side cost calculation means for calculating the operating cost of the heat source side unit (X) ,. And distributed to the load side units (A), (B), ...
A flow rate ratio detecting means for detecting a flow rate ratio of the next refrigerant, a rated capacity setting means for presetting a rated capacity of each of the load side units (A), (B), ..., A heat source side unit (X) ,. The individual operating time detecting means for detecting the operating time of each of the load side units (A), (B), ... In the predetermined operating time of, and the outputs of the flow rate ratio detecting means and the individual operating time detecting means The product of the rated capacity of each load side unit (A), (B), ... Set by the capacity setting means, the operating time of each load side unit (A), (B) ,. Relative usage amount calculation means for calculating the relative usage amount of each load side unit (A), (B), ..., And the calculation value of the heat source side cost calculation means, the relative usage amount calculation means Each load side unit (A) calculated by
(B), ... An air conditioner characterized by being provided with a shared cost calculation means for calculating a shared cost of each load side unit (A), (B), ... Individual operating cost calculator. 2. A heat source side unit (X), ..., Which supplies a secondary refrigerant for air conditioning, and a circulation path (3) ,. A plurality of load side units (A), (B), ... Which perform heat exchange between the supplied secondary refrigerant and room air are connected in parallel, and the load side units (A), (B) ,. In an air conditioner including flow control valves (EVa), (EVb), ... For controlling the flow rate of the next refrigerant, heat source side cost calculation means for calculating the operating cost of the heat source side unit (X) ,. And distributed to the load side units (A), (B), ...
A flow rate ratio detecting means for detecting a flow rate ratio of the next refrigerant, a rated capacity setting means for presetting a rated capacity of each of the load side units (A), (B), ..., A heat source side unit (X) ,. Of the individual load-side units (A), (B), ... During the predetermined operating time, and individual load-time detecting means for detecting the operating time of each of the load-side units (A), (B) ,.
The load side unit (A) receives the outputs of the temperature difference detecting means for detecting the inlet / outlet temperature difference of the next refrigerant, the flow rate ratio detecting means, the individual operating time detecting means and the temperature difference detecting means.
(B), ... Operating time, secondary refrigerant flow rate ratio, inlet / outlet temperature difference and specific heat product of the secondary refrigerant are calculated to calculate the relative usage amount of each load side unit (A), (B) ,. The relative usage amount calculating means for calculating and the calculation values of the heat source side cost calculating means are calculated by the relative usage amount calculating means for each load side unit (A),
(B), ... Proportionally distributed by the relative usage amount, and a sharing cost calculation means for calculating a sharing cost of each load side unit (A), (B), ... Individual operating cost calculator for air conditioners. 3. The individual operating cost calculation device for an air conditioner according to claim 1 or 2, wherein the flow rate ratio detecting means includes load side units (A), (B),
An individual operation cost calculation device for an air conditioner, which detects a flow rate ratio based on the openings of the flow control valves (EVa), (EVb) ,. 4. A heat source side unit (X), ..., Which supplies a secondary refrigerant for air conditioning, and a circulation path (3), ... In which the secondary refrigerant circulates, from the heat source side unit (X) ,. A plurality of load side units (A), (B), ... Which perform heat exchange between the supplied secondary refrigerant and room air are connected in parallel, and the load side units (A), (B) ,. In the air conditioner including the flow rate control valves (EVa), (EVb), ... For controlling the flow rate of the secondary refrigerant, each load side unit (A) of the pipe through which the secondary refrigerant flows,
Load side heat exchangers (FCa), (F) provided in the load side units (A), (B), ...
Bypass pipes (4a), (4) for bypassing Cb), ...
b), ..., and the load side heat exchangers (FCa), (FCb), ... And the bypass pipes (4a), (4b) ,. ), (EVb), ... And the heat source side cost calculating means for calculating the operating cost of the heat source side unit (X), and the rating of each load side unit (A), (B) ,. Rated capacity setting means for presetting the capacity, and individual operating time detecting means for detecting the operating time of each of the load side units (A), (B), ... In a predetermined operating time of the heat source side unit (X) ,. And a temperature difference detecting means for detecting a temperature difference before and after branching with the bypass pipes (4a), (4b), ... In each branch pipe, and receiving outputs from the temperature difference detecting means and the individual operating time detecting means, Each load side unit (A) set by the rated capacity setting means (B), ... Rated capacity, load side units (A), (B), ... Operating time and product of temperature difference before and after branching are calculated to calculate load side units (A), (B) ,. Relative usage amount calculating means for calculating the relative usage amount of each of the load side units (A), and the calculation values of the heat source side cost calculating means are calculated by the relative usage amount calculating means.
(B), ... Proportionally distributed by the relative usage amount, and a sharing cost calculation means for calculating a sharing cost of each load side unit (A), (B), ... Individual operating cost calculator for air conditioners. 5. The individual operating cost calculation device for an air conditioner according to claim 1 or 3, wherein each of the load side units (A), (B), ... Has a blower fan having a variable blown air amount. An air flow rate detection means, which is additionally provided, detects the air flow rate of the blower fans of the load side units (A), (B), ..., And receives the output of the air flow rate detection means, and is calculated by the relative usage amount calculation means The individual operating cost calculation device of the air conditioner, comprising: a correction unit that corrects the relative usage amount of each load side unit (A), (B), ... Based on the air flow rate ratio of the air blow fan. . 6. The operation cost calculation device for an air conditioner according to claim 1, 2, 3, 4 or 5, wherein the heat source side unit (X), ... Is a cooling secondary refrigerant and a heating secondary refrigerant. The load side units (A), (B), ... Are individually configured to be capable of heating / cooling operation, and the heat source side cost calculation means is the heat source side unit (X), The cost required for the cooling operation and the cost required for the heating operation are separately calculated. The relative usage amount calculation means is a load side unit group performing the cooling operation and a load performing the heating operation. The unit is divided into the side unit group and the relative usage amount in each group is calculated.The sharing cost calculation means apportions the cost required for the cooling operation by the relative usage amount of the load side unit group during the cooling operation, The heating side costs the load side during heating operation. Individual operating cost calculation unit of an air conditioner which is characterized in that one that apportioned relative amount of group knit. 7. The individual operation cost calculation device for an air conditioner according to claim 1, 2, 3, 4 or 5, wherein the heat source side units (X), ... The load side units (A), (B), ... Are individually configured to be capable of cooling and heating operation, and the heat source side cost calculation means is for cooling. The cost required for the operation and the heating operation is calculated at the same time, and the relative usage amount calculation means is divided into a load side unit group performing the cooling operation and a load side unit group performing the heating operation, An individual operating cost calculation device for an air conditioner, wherein the load side unit during cooling and the load side unit during heating are weighted differently to calculate the relative usage amount in each group. 8. The individual operating cost calculation device for an air conditioner according to claim 1, 2, 3, 4 or 5, wherein the heat source side unit (X), ... Is a cooling secondary refrigerant and a heating secondary refrigerant. And at least one load side unit (A), (B), ...
Is configured to include a cooling heat exchanger through which the cooling secondary refrigerant flows and a heating heat exchanger through which the heating secondary refrigerant flows, and the relative usage amount calculation means is the load side. Unit (A),
(B), The relative amount of use of the cooling heat exchanger and the heating heat exchanger are individually calculated, and the heat source side cost calculation means calculates the cost required for the cooling operation and the cost required for the heating operation. The load-side unit (A),
The relative use amount of the cooling heat exchangers of (B), ... Is incorporated into the load side device group during the cooling operation, and the relative use amount of the heating heat exchanger is incorporated into the load side device group during the heating operation, After dividing the operating cost of the heat source side unit (X), etc. for each load side heat exchanger by cooling and heating to calculate the sharing cost, add the sharing cost of the load side heat exchanger in the same load side unit to each load An individual operating cost calculation device for an air conditioner, characterized in that the shared cost of the side units (A), (B), ... Is calculated. 9. The individual operating cost calculation device for an air conditioner according to claim 1, 2, 3, 4 or 5, wherein the heat source side units (X), ... The heat source side cost calculation means is configured to supply the secondary refrigerant for heating and collectively calculates the costs required for the cooling operation and the heating operation, and at least one load side unit (A ), (B), ...
Is configured to include a cooling heat exchanger through which the cooling secondary refrigerant flows and a heating heat exchanger through which the heating secondary refrigerant flows, and the relative usage amount calculation means is the load side. Unit (A),
(B), ..., The relative usage amounts of the cooling heat exchanger and the heating heat exchanger are individually calculated, and the sharing cost calculation means is the load side unit (A),
The relative use amount of the cooling heat exchangers (B), ... Is incorporated into the load side device group during the cooling operation, and the relative use amount of the heating heat exchanger is incorporated into the load side device group during the heating operation. The operating cost of the heat source side unit (X), ... Is weighted differently for the cooling heat exchanger and the heating heat exchanger, and is divided into cooling and heating for each load side heat exchanger to calculate the sharing cost, and then the same load. The individual operating cost of the air conditioner characterized by calculating the sharing cost of each load side unit (A), (B), ... by adding the sharing cost of the load side heat exchanger in the side unit. Arithmetic unit. 10. Claims 1, 2, 3, 4, 5, 6, 7,
In the individual operation cost calculation device of the air conditioner according to 8 or 9, the heat source side cost calculation means and the relative usage amount calculation means are always operated, and the sharing cost calculation means is the heat source side cost calculation means and The calculated values of the relative usage amount calculation means are integrated for a predetermined reference time, and the integrated value is used to apportion and calculate the usage amount of each load side unit (A), (B), .. An individual operation cost calculation device for an air conditioner, which is characterized in that 11. Claims 1, 2, 3, 4, 5, 6, 7,
In the individual operation cost calculation device for an air conditioner according to 8 or 9, the heat source side cost calculation means is always activated, and the relative usage amount calculation means is operated at fixed time intervals. The means multiplies the calculated value of the relative usage amount calculation means by the fixed time interval and adds the multiplied value to obtain an integrated value in a reference time longer than the fixed time, while using the calculated value of the heat source side cost calculation means as a reference. An individual operating cost calculation of the air conditioner, wherein the integrated value for time is proportionally divided by the integrated value of the relative usage amount of each load side unit (A), (B), ... apparatus. 12. The method according to claim 1, 2, 3, 4, 5, 6, 7,
In the individual operation cost calculation device for an air conditioner according to 8 or 9, the relative usage amount calculation means operates at a fixed time interval, and the sharing cost calculation means is the calculation value of the relative usage amount calculation means. Is multiplied by the above-mentioned fixed time interval to obtain the sum total of the usage amount of each load side unit (A), (B), ... And the relative usage amount, and the calculated value for the fixed time by the heat source side cost calculating means. Is proportionally divided by the above relative usage,
Individual operation cost of the air conditioner characterized by calculating the usage amount of each load-side unit (A), (B), ... Arithmetic unit.