CN2599459Y

CN2599459Y - Hot water preparing device by recovering waste heat of central air conditioner

Info

Publication number: CN2599459Y
Application number: CNU022506128U
Authority: CN
Inventors: 姚圣聪
Original assignee: Guangzhou City Heat Source Environmental Protection Energy-Saving Equipment Co
Current assignee: Guangzhou City Heat Source Environmental Protection Energy-Saving Equipment Co
Priority date: 2002-12-24
Filing date: 2002-12-24
Publication date: 2004-01-14
Anticipated expiration: 2012-12-24

Abstract

The utility model belongs to heating technology and relates to a water heating device of waste heat recovery of central air conditioner. The utility model solves the dual waste of energy and the dual environmental pollution from hostels and hotels, i.e. tremendous waste of energy and serious thermal pollution caused by heat discharged during refrigeration of water chiller of the central air conditioner, meanwhile, boiler consumption of large amount of fuel for production of hot water. The utility model comprises an evaporator of heat pump with heat exchanger of two pair of feed and discharge pipeline, a condenser of heat pump, a heating compressor and a throttle valve, wherein, a high-temperature introduction pipe and a high-temperature discharge pipe for connecting the circulated cooling water pipe is equipped on the evaporator of heat pump, a water feed pipe and a water discharge pipe in the loop with the hot water tank is equipped on the condenser of heat pump, the high-temperature introduction pipe and the high-temperature discharge pipe is provided with the cool water circulation pump, and the water feed pipe and the water discharge pipe is provided with the hot water circulation pump. The utility model makes the evaporator of heat pump utilize the cooling water from the condenser of the water chiller of the central air conditioner, makes the condenser of heat pump discharge high-temperature water, to meet the hot water demands from hotels, the hotel guestrooms, restaurants, saunas and swimming pools.

Description

Central air-conditioning waste heat recovery hot-water apparatus

Technical field

The utility model belongs to and heats technical field, particularly relates to central air-conditioning waste heat recovery hot-water apparatus.

Background technology

All large-scale modern architecture things as hotel, hotel etc., mostly are provided with central air-conditioning and 24 hours domestic hot-water supply systems, are cold source of air conditioning with the refrigeration machine, and steam or hot-water boiler are air-conditioning heating and hot water supplied heat source.Discharged 1.15～1.3 times the heat that is equivalent to refrigerating capacity under the design conditions when summer, the air conditioner cold water unit freezed and drain (row looses in atmosphere) by cooling tower, form huge energy waste and serious thermal pollution, and boiler is had to consume a large amount of fuel (fuel oil, coal gas or natural gas) and is removed to produce hot water, to satisfy the demand of hotel, hotel guest room, dining room, Saunas, swimming pool etc., cause the dual waste of the energy and to the dual pollution of environment.

Summary of the invention

The generation hot water that the purpose of this utility model is to provide a kind of thermal source that utilizes refrigeration system that water is heated up is on the other hand to the central air-conditioning waste heat recovery hot-water apparatus of air-conditioning system cooling.

For realizing the purpose of this utility model, described central air-conditioning waste heat recovery hot-water apparatus, being connected to communicating pipe between the working medium inlet that heat that heats sender property outlet and heat pump condenser at evaporator with heat pump heats compressor, the throttling of being equipped with communicating pipe that heats between the sender property outlet that heats working medium inlet and heat pump condenser of evaporator with heat pump is cut down, described evaporator with heat pump and heat pump condenser are the heat exchanger with two pairs of turnover pipelines, evaporator with heat pump is provided with high temperature inlet tube and the high temperature discharge pipe that is connected to respectively on the cool cycles water lines of cooling tower, heat pump condenser is provided with to link to each other with boiler and forms the water inlet pipe in loop, outlet pipe, described high temperature inlet tube or high temperature discharge pipe are provided with cold water circulation pump, and described water inlet pipe or outlet pipe are provided with hot water circulating pump.

Evaporator with heat pump, heat pump condenser, heat compressor, throttling is cut down and is connected to form source pump.Because the inlet tube and the water discharge pipe of the evaporator with heat pump in the source pump are connected on the cooling tower water loop, make evaporator with heat pump can utilize the cooling water of central air-conditioning handpiece Water Chilling Units condenser, the cooling water of the higher temperature of part air conditioner cold water unit output is sent into evaporator with heat pump, through evaporator with heat pump evaporation heat absorption, make the water of heat pump condenser output high-temperature, constantly circulate through boiler, water in the boiler is heated up, to satisfy the demand to hot water such as hotel with central air conditioner system, hotel guest room, dining room, Saunas, swimming pool.

Description of drawings

The drawing of accompanying drawing is described as follows:

Fig. 1 is a structural representation of the present utility model.

The specific embodiment

Below in conjunction with accompanying drawing, specific embodiment of the utility model is described further.

As shown in FIG., the utility model includes and it is characterized in that having source pump 15, evaporator with heat pump 3, cool

cycles water lines

9,10, high temperature inlet tube 11, high temperature discharge pipe 12, heat pump condenser 2, boiler 5, water inlet pipe 13, outlet pipe 14, cold water circulation pump 7, hot water circulating pump 8, hot water pipe net 6, water return pipeline 20, water knockout drum 16, water collector 17, low temperature inlet tube 19, low temperature discharge pipe 21, be provided with stop valve 18, heat compressor 1, throttling cuts down 4.

Be provided with water return pipeline 20 between described boiler 5 and the water inlet pipe 13, hot water pipe net 6 is connected in the water return pipeline 20.

Evaporator with heat pump 3 in the described source pump 15 is provided with low temperature inlet tube 19 and the low temperature discharge pipe 21 that is connected to towards water knockout drum 16 and water collector 17, and described high temperature inlet tube 11, high temperature discharge pipe 12, low temperature inlet tube 19, low temperature discharge pipe 21 are provided with stop valve 18.Described evaporator with heat pump 3 is the heat-exchangerss of the plate type with two pairs of turnover pipelines with heat pump condenser 2.

Described source pump 15 comprises that thermocompressor 1, heat pump condenser 2, evaporator with heat pump 3 and throttling cut down 4.Being connected to communicating pipe between the working medium inlet that heat that heats sender property outlet and heat pump condenser 2 of evaporator with heat pump 3 heats compressor 1 in the source pump 15, the throttling of being equipped with communicating pipe that heats between the sender property outlet that heats working medium inlet and heat pump condenser 2 of evaporator with heat pump 3 cuts down 4, during work, constantly produce heat on the heat pump condenser 2, to boiler 5 heat supplies, and the continuous cold that produces on the evaporator with heat pump 3, to the recirculated water or the cooling water secondary cooling of central air conditioner system, can further improve the refrigerating efficiency of central air conditioner system.

Owing to the high temperature inlet tube 11 that is connected to respectively on the cool

cycles water lines

9,10 of cooling tower and high temperature discharge pipe 12 are not only arranged on the evaporator with heat pump 3 in the source pump 15 but also low temperature inlet tube 19 and the low temperature discharge pipe 21 that is connected to towards water knockout drum 16 and water collector 17 are arranged, and be provided with stop valve 18.Make evaporator with heat pump 3 not only can utilize the cooling water of the hot water of central air-conditioning handpiece Water Chilling Units condenser outflow as it, the recirculated water of the higher temperature of part air conditioner cold water unit output is sent into evaporator with heat pump, but also can switch by stop valve 18 break-makes, the cooling water of central air-conditioning is sent into evaporator with heat pump, cooling water is further freezed, simultaneously by heating compressor 1, heat energy in recirculated water or the cooling water is sent to heat pump condenser 2, by water inlet pipe 13, outlet pipe 14 is sent into boiler 5, utilize circulating pump 8 to make the water in the boiler 5 constantly repeat heating through heat pump condenser 2, thereby the water in the boiler 5 constantly obtains heating up, and reaches the purpose of producing hot water.

Source pump 15 adopts cold-producing medium working medium such as R ₂₂Or the mix refrigerant working medium used of high temperature heat pump, heat pump fluid gasifies in evaporator with heat pump 3 and absorbs air conditioner cold water unit cooling water heat, through heat pump compressor 1 compression, in compressed process, constantly absorb the work done during compression that compressor has been converted into heat energy again, the gas working medium that has formed HTHP is delivered to heat pump condenser 2 condensations, heat is discharged to the circulation between boiler 5 and the heat pump condenser 2, hot water temperature in the boiler is constantly risen, until the hot water temperature who sets, keep the hot water temperature constant then and hot water is delivered to pipe network interface 6, hot water feeds pipe networks through pipe network interface 6 and uses for the user.If adopt general heat pump, the boiler temperature can be set at 55 ℃, adopts high temperature heat pump then can be set at 72 ℃.Hot water in the boiler 5 can constantly replenish in boiler 5 after being consumed for the user by pipe network through pipe network interface 6.

As mentioned above, the utility model central air-conditioning waste heat recovery hot-water apparatus not only can reclaim the central air-conditioning waste heat in a large number and produce hotel, the required domestic hot-water in hotel, stop hot-water boiler, drive steam boiler less, not only saved the energy but also reduced thermal pollution and smoke contamination environment.Compare with generally utilizing heat exchanger such as plate type heat exchanger to wait simply directly to reclaim air conditioner cold water unit waste heat equipment, the utility model has wide range of applications, all all recyclable utilizations of large, medium and small type air conditioner cold water unit waste heat have been comprised, the handpiece Water Chilling Units main frame be need not any change, fool proof, very reliable, and can be when non-cooling be stopped handpiece Water Chilling Units season such as the excessive last month of spring, autumn, time early winter etc. can isolated operation, but same whole day is user's hot-water supply.And the simple heat exchanger of general using reclaims the method for air-conditioning waste heat, to the large-size air conditioning handpiece Water Chilling Units, as adopting the large-scale handpiece Water Chilling Units of efficient centrifugal compressor, because the low hot water that then at all can't output reaches temperature that the hotel requires of compressor exhaust temperature; Small-sized unit then had to compressor exhaust pipe cut open connect simple gas-water-to-water heat exchanger, also must carry out pressure testing, leak detection, pipe arrangement, welding, row's fluorine at work progress, irritate series of processes such as fluorine, also may cause industrial accident because of carelessness; If heat exchanger or take over the improper Compressor Discharge Pressure that also may cause of design and raise descends the handpiece Water Chilling Units refrigerating efficiency or can't normally move.And installation of the present utility model need not to touch main frame, so its application has everything to gain and nothing to lose to the user.

According to accompanying drawing 1 and said structure, when the utility model device heating capacity during at 400kw, 34～38 tons of the water yield of evaporator with heat pump 3 heat source waters in the closed circuit of inlet tube 11, discharge pipe 12/time, heat source water is that the cooling water of air conditioner cold water unit condenser drainpipe 10 is at 37 ℃, behind inlet tube 11, the cooling water of discharging at discharge pipe 12 mixes with 32 ℃ of cooling waters that cooling tower gets off at 30 ℃, inflow air conditioner cold water unit condenser 2 '.

In sum, this structure has been owing at first utilized source pump 15 to heat, compared with fuel oil, fire coal or with the efficient height of electrical heating production hot water.Secondly, utilize the cooling water of central air-conditioning handpiece Water Chilling Units condenser, can save a cover cooling system, simple in structure, and also cost is low.The 3rd, utilized the cooling water of the higher temperature of part air conditioner cold water unit output to send into evaporator with heat pump, can make the efficient of producing hot water higher.The 4th, utilized the cooling water of the lower temperature of evaporator with heat pump output be recycled to central air-conditioning handpiece Water Chilling Units condenser 2 ', thereby improved the refrigerating efficiency of air conditioner cold water unit, saved electricity consumption.

Claims

1. central air-conditioning waste heat recovery hot-water apparatus, being connected to communicating pipe between the working medium inlet that heat that heats sender property outlet and heat pump condenser (2) at evaporator with heat pump (3) heats compressor (1), (4) are cut down in the throttling of being equipped with communicating pipe that heats between the sender property outlet that heats working medium inlet and heat pump condenser (2) of evaporator with heat pump (3), it is characterized in that described evaporator with heat pump (3) and heat pump condenser (2) are the heat exchangers with two pairs of turnover pipelines, evaporator with heat pump (3) is provided with the cool cycles water lines (9) that is connected to respectively towards cooling tower, (10) high temperature inlet tube (11) on and high temperature discharge pipe (12), heat pump condenser (2) is provided with the water inlet pipe (13) that links to each other and form the loop with boiler (5), outlet pipe (14), described high temperature inlet tube (11) or high temperature discharge pipe (12) are provided with cold water circulation pump (7), and described water inlet pipe (13) or outlet pipe (14) are provided with hot water circulating pump (8).

2. central air-conditioning waste heat recovery hot-water apparatus according to claim 1 is characterized in that being provided with water return pipeline (20) between described boiler (5) and the water inlet pipe (13), and hot water pipe net (6) is connected in the water return pipeline (20).

3. central air-conditioning waste heat recovery hot-water apparatus according to claim 1 and 2, it is characterized in that described evaporator with heat pump (3) is provided with low temperature inlet tube (19) and the low temperature discharge pipe (21) that is connected to towards water knockout drum (16) and water collector (17), described high temperature inlet tube (11), high temperature discharge pipe (12), low temperature inlet tube (19), low temperature discharge pipe (21) are provided with stop valve (18).