CN201476187U

CN201476187U - Dynamic energy saving system of central air-conditioning

Info

Publication number: CN201476187U
Application number: CN2009201577557U
Authority: CN
Inventors: 林进猛
Original assignee: Huizhou Zhonglin Industry Co Ltd
Current assignee: GUANGDONG GUONENG ZHONGLIN ENTERPRISE CO LTD; Huizhou able China Forest Industry Co.,Ltd.
Priority date: 2009-06-02
Filing date: 2009-06-02
Publication date: 2010-05-19
Anticipated expiration: 2019-06-02

Abstract

The utility model relates to a dynamic energy saving system of a central air-conditioning, which comprises a main machine, an auxiliary machine, two cooling towers, a cooling water pump and a refrigeration water pump, the main machine connects with the auxiliary machine in series, the main machine and the auxiliary machine connect with the cooling water pump, the refrigeration water pump and a water supply tank respectively through a cable, wherein the cooling water pump connects with two cooling towers through a pipeline, the refrigeration water pump connects with a backwater tank through the pipeline, the backwater tank connects with an expansion water tank through the pipeline, the expansion water tank connects with two cooling towers through the pipeline. The utility model has beneficial effects in that: the dynamic energy saving system makes a refrigerant of the main machine and various flow of the auxiliary system change synchronously following a load charge on an end, reduces system energy consumption of the system greatly on the premise that the central air-conditioning satisfies a condition of comfortable; the dynamic energy saving system realizes integration management to equipments, such as the main machine of the air conditioning, a cold-warm water pump, the cooling water pump, the cooling tower fan, etc.; the dynamic energy saving system reduces operation maintaining cost, reduces discharge capacity of carbon dioxide and hot gas to the aerosphere and reduces pollution to the air environment.

Description

Central air-conditioning dynamic energy-saving system

Technical field

The utility model relates to a kind of central air-conditioning dynamic energy-saving system.

Background technology

Along with improving constantly of social progress and living standards of the people, the application of China's air-conditioning technical is extensive day by day, a lot of public buildings, air-conditioning has all been installed by the workshop of factory and ordinarily resident family, so the energy that the saving air-conditioning expends is a strategic task of China's economy and social development, traditional central air conditioner system is based on the principle of constant flow operation and transmission energy, carrying out cooling and heating load based on traditional engineering design method calculates and lectotype selection, this principle and engineering method can guarantee the cold and hot amount exchange in the building fully, and bring up comfortable air ambient, but because the ambient temperature of building is dynamic with season and circadian variation, interior of building will cause dynamic change to central air conditioner energy workload demand to the changes in demand of cooling and heating load; Long-term experimental result shows, because the dynamic change of ambient temperature and internal load, the central air conditioner system ubiquity the invalid energy consumption more than 30%, the invalid energy consumption of some central air conditioner system even can be up to more than 50%, in other words, central air conditioner system exists the minimum energy saving space more than 30%.

The utility model content

The purpose of this utility model provides a kind of central air-conditioning dynamic energy-saving system, to overcome the big deficiency of existing central air conditioner system power consumption.

The purpose of this utility model is to be achieved through the following technical solutions:

A kind of central air-conditioning dynamic energy-saving system, comprise main frame, subsidiary engine, two cooling towers, cooling water pump and chilled water pumps, described main and auxiliaries series connection, main and auxiliaries all is connected with cooling water pump, chilled water pump and water supply tank respectively by cable, wherein cooling water pump is connected with two cooling towers by pipeline, chilled water pump is connected with the backwater jar by pipeline, and the backwater jar is connected with expansion tank by pipeline, and expansion tank is connected with two cooling towers by pipeline.

The beneficial effects of the utility model are: not only make equipment obtain real-time optimization control, and central air conditioner main machine running environment is optimized, make the various fluid flows of main frame refrigerant and auxiliary system follow terminal load variations and variation synchronously, guarantee that central air conditioner system satisfies under the comfortable prerequisite, significantly reduces system's energy resource consumption; Increase work efficiency, realized equipment such as air-conditioner host, cold warm water pump, cooling water pump, blower fan of cooling tower are managed concentratedly; Stable, safety adopt soft start-stop mode and low-frequency operation mode to control water pump, and the mechanical wear of avoiding impacting electrical network He alleviating equipment increases the service life; Systems soft ware and hardware setting multistage interlocking, guarantee system safety operation; Reduce operation and maintenance cost, realize unattended operation, save the operational management personnel; Can realize soft the opening of water pump/stop and the low frequency operation, not impact electrical network, alleviate the mechanical wear of equipment again; Easily grasp, easy to operate; Can reduce discharge capacity, reduce pollution air ambient to dioxide atmosphere and hot gas; Reduce the loss of refrigerant, reduce freezing and damage by water cooling water, can also reduce the pollution of noise of equipment environment.

Description of drawings

With reference to the accompanying drawings the utility model is described in further detail below.

Fig. 1 is the structural representation of the described central air-conditioning dynamic energy-saving of the utility model embodiment system;

Fig. 2 is the theory diagram of the described central air-conditioning dynamic energy-saving of the utility model embodiment system.

Among the figure:

1, main frame; 2, subsidiary engine; 3, cooling tower; 4, cooling water pump; 5, chilled water pump; 6, water supply tank; 7, backwater jar; 8, expansion tank.

The specific embodiment,

As shown in Figure 1, the described a kind of central air-conditioning dynamic energy-saving of the utility model embodiment system, comprise main frame 1, subsidiary engine 2, two cooling towers 3, cooling water pump 4 and chilled water pumps 5, described main frame 1 is connected with subsidiary engine 2, main frame 1 all is connected with cooling water pump 4, chilled water pump 5 and water supply tank 6 respectively by cable with subsidiary engine 2, wherein cooling water pump 4 is connected with two cooling towers 3 by pipeline, chilled water pump 5 is connected with backwater jar 7 by pipeline, backwater jar 7 is connected with expansion tank 8 by pipeline, and expansion tank 8 is connected with two cooling towers 3 by pipeline.

As shown in Figure 2, the data-signal that sensor feedback is come out is transferred to the tracking interface of main frame 1 and subsidiary engine 2 by the A/D analog-to-digital conversion module, main frame 1 and subsidiary engine 2 are by analyzing the data-signal that transmits, and after comparing with the data of database and planning library, data-signal after the servo-actuated interface will be analyzed and contrast is transferred to executing agency, executing agency is by the control controlled device, as cooling water pump 4, chilled water pump 5 etc., the data-signal that makes sensor feedback is consistent with database and planning library.

System described in the utility model is according to the variation of central air conditioner main machine 1 and subsidiary engine 2 system conditions and terminal load, gather many group running parameters, as: numerous parameters such as controlled central air-conditioning freezing (temperature) water system, cooling water system discrepancy coolant-temperature gage, pressure, and these parameters are complicated, nonlinear and time variation, characteristic at these systematic parameters, work out unique load with movement controller and control software, i.e. fuzzy controller and fuzzy control software thereof; Automatically control the rational state of freezing (temperature) water pump, cooling water pump, blower fan of cooling tower operate power, then these data are imported into frequency conversion rack separately with data signal, after the frequency conversion rack receives orders, promptly freezing (temperature) water pump, cooling water pump, blower fan of cooling tower are made frequency-conversion processing, form a closed circuit, each pump group blower fan changes with load variations; Thereby make energy consumption equipment initiatively follow the trail of main frame, subsidiary engine ruuning situation and terminal load variations, be optimized control, make actual consumption infinitely need energy consumption, guarantee that central air conditioner system satisfies under the comfortable prerequisite, significantly reduces system's energy resource consumption near its theory.

When central air-conditioning system load variations causes air-conditioner host and water system thereof to depart from optimum condition, fuzzy controller obtains various operational parameter values according to data acquisition, as system's supply and return water temperature, for backwater pressure reduction, flow and environment temperature etc., the control parameter value that output is optimized after the reasoning computing, system operational parameters is dynamically adjusted, guarantee that main frame is under any loading condiction, the running environment that an optimization is all arranged, all the time be in optimal operating condition, thereby maintenance efficient (COP) is the highest, energy consumption is minimum, realizes main engine energy-saving 5%～20%

Claims

1. central air-conditioning dynamic energy-saving system, comprise main frame (1), subsidiary engine (2), two cooling towers (3), cooling water pump (4) and chilled water pump (5), it is characterized in that: described main frame (1) is connected with subsidiary engine (2), main frame (1) and subsidiary engine (2) all by cable respectively with cooling water pump (4), chilled water pump (5) is connected with water supply tank (6), wherein cooling water pump (4) is connected with two cooling towers (3) by pipeline, chilled water pump (5) is connected with backwater jar (7) by pipeline, backwater jar (7) is connected with expansion tank (8) by pipeline, and expansion tank (8) is connected with two cooling towers (3) by pipeline.