CN108644942B - Multi-source complementary distributed heat source tower heat pump system - Google Patents
Multi-source complementary distributed heat source tower heat pump system Download PDFInfo
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- CN108644942B CN108644942B CN201810454284.XA CN201810454284A CN108644942B CN 108644942 B CN108644942 B CN 108644942B CN 201810454284 A CN201810454284 A CN 201810454284A CN 108644942 B CN108644942 B CN 108644942B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B27/00—Machines, plants or systems, using particular sources of energy
- F25B27/002—Machines, plants or systems, using particular sources of energy using solar energy
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/06—Heat pumps characterised by the source of low potential heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
- F24F2005/0064—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground using solar energy
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Abstract
The invention discloses a multi-source complementary distributed heat source tower heat pump system which comprises a refrigerant loop, a heat source tower loop, a soil energy supply loop, a solution regeneration loop and a photo-thermal auxiliary regeneration loop. Compared with the prior art, the invention is provided with a plurality of indoor heat exchangers in the outer building area, and the refrigerant loop is directly connected with the heat source tower heat pump host, thereby ensuring the high efficiency of the cold and heat source system, realizing the independent and flexible control of rooms one by one and improving the efficiency under partial load. According to the invention, the indoor heat exchangers are arranged in the building, so that the heat in the building is fully utilized, the autonomous regeneration of the solution is realized, the stable operation of the system is ensured, and the system efficiency is improved. The invention has a heat source tower heat pump single supply mode, a soil loop direct supply mode and a heat source tower heat pump and soil loop combined supply mode, and combines the inner zone waste heat autonomous regeneration and the photo-thermal auxiliary regeneration to ensure that the system can stably and efficiently operate under the conditions of extreme working conditions, partial load and the like.
Description
Technical Field
The invention relates to the field of design and manufacture of refrigeration and air-conditioning systems, in particular to a multi-source complementary distributed heat source tower heat pump system which utilizes a soil loop to realize peak regulation, and adopts heat and photo-thermal assistance in a building to realize solution autonomous regeneration and combines a centralized cold and heat source with a dispersed tail end.
Background
At present, heating and air conditioning systems commonly used in buildings are a water chilling unit and a boiler, an air source heat pump and a water and ground source heat pump. The water chilling unit and the boiler are idle when the water chilling unit and the boiler operate in winter, and the utilization rate of equipment is low. The boiler has low utilization rate of primary energy and can pollute the environment in the using process. The efficiency of the air source heat pump is far lower than that of a water cooling unit in summer, the frosting problem exists in the operation in winter, and the frosting is particularly serious under the cold and humid condition in winter in hot summer and cold winter areas, so that the heat supply capacity and efficiency are seriously influenced. The water-ground source heat pump has high efficiency in winter and summer, but has high initial investment and is limited by geographical geological conditions. The heat source tower heat pump system has the advantages of high equipment utilization rate, equivalent summer efficiency to a water chilling unit, no frosting problem in winter, no geological condition limitation and the like, has stronger advantages compared with the traditional heating air conditioning system, and has wide application prospect in hot summer and cold winter areas.
The existing heat source tower heat pump system is mainly combined with an all-air system and a water system to realize cooling and heating of a building. The air duct of the all-air system has large size and large occupied space; the power required by air supply is large, the energy consumption of a transmission and distribution system is far higher than that of a water system, and the independent regulation and control of rooms one by one are difficult to realize. Compared with the full-air system, the water system has the advantages that although the transmission and distribution energy consumption is obviously reduced and the independent control of rooms can be realized, the corresponding speed of the adjustment is lower than that of the fluorine system, and the efficiency is lower than that of the fluorine system due to secondary heat exchange. Therefore, the combination of the heat source tower heat pump and the fluorine system is expected to ensure the high efficiency of the cold and heat source, and simultaneously have the flexibility of dispersing the tail end and the high efficiency under partial load.
In addition to the integrated form with the tip, heat source tower heat pump systems suffer from the following problems: (1) the heat required by the solution regeneration of the heat source tower heat pump unit is taken from the overheating section or the supercooling section of the heat pump unit, so that the heat supply capacity of the unit is reduced, or the heat pump unit supplies the heat, so that the initial investment is increased; (2) under extreme weather, the heating capacity and efficiency of the system are difficult to meet the building requirements.
Therefore, how to combine the self characteristics of the building to realize the autonomous regeneration of the solution, utilize multi-source complementation to realize the stable and efficient operation under the severe working condition, and couple with the distributed fluorine terminal to design a novel distributed heat source tower heat pump system becomes the technical problem which needs to be solved urgently by the technical personnel in the field.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a multisource complementary distributed heat source tower heat pump system which solves the problems that a heat source tower system has insufficient heat supply demand under the worst working condition, a solution regeneration mode influences heat supply of a heat pump, and each room of a building requires independent control of indoor temperature and start-stop time, realizes stable operation of the system under the worst working condition by using the peak regulation effect of an underground pipe, realizes independent control of indoor temperature and start-stop time by using a distributed tail end, and realizes autonomous solution regeneration by using heat and solar photo-heat in the building.
The technical scheme is as follows: the multi-source complementary distributed heat source tower heat pump system comprises a refrigerant loop, a heat source tower loop, a soil energy supply loop, a solution regeneration loop and a photo-thermal auxiliary regeneration loop. The refrigerant loop comprises a compressor, an oil separator, a one-way valve, a four-way reversing valve, a first plate heat exchanger, a second plate heat exchanger, a first indoor heat exchanger, a second indoor heat exchanger, a first expansion valve, a second expansion valve, a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve, a fourth electromagnetic valve, a fifth electromagnetic valve, a sixth electromagnetic valve, a seventh electromagnetic valve and an eighth electromagnetic valve. In the refrigerant loop, the output end of the compressor is connected with the first input end of the four-way reversing valve, the first output end of the four-way reversing valve is respectively connected with the input end of a third electromagnetic valve and the input end of a seventh electromagnetic valve, the output end of the third electromagnetic valve is connected with the refrigerant side input end of the first plate heat exchanger, the refrigerant side output end of the first plate heat exchanger is connected with the input end of a fourth electromagnetic valve, the output end of the fourth electromagnetic valve and the output end of the seventh electromagnetic valve are respectively connected with the input end of a fifth electromagnetic valve and the input end of an eighth electromagnetic valve, the output end of the fifth electromagnetic valve is connected with the refrigerant side input end of a second plate heat exchanger, the refrigerant side output end of the second plate heat exchanger is connected with the input end of a sixth electromagnetic valve, the output end of the sixth electromagnetic valve, the second expansion valve is connected with the second indoor heat exchanger, the first indoor heat exchanger is connected with the input end of the first electromagnetic valve, the second indoor heat exchanger is connected with the input end of the second electromagnetic valve, the second input end of the four-way reversing valve is connected with the output end of the first electromagnetic valve and the output end of the second electromagnetic valve respectively, the second output end of the four-way reversing valve is connected with the input end of the one-way valve, the output end of the one-way valve is connected with the input end of the oil separator, and the oil separator is connected. The heat source tower loop comprises a heat source tower, a first pump, a first plate heat exchanger, an eleventh electromagnetic valve, a twelfth electromagnetic valve, a thirteenth electromagnetic valve, a fourteenth electromagnetic valve and a fifteenth electromagnetic valve. In the heat source tower loop, the output end of the heat source tower is connected with the input end of an eleventh electromagnetic valve, a twelfth electromagnetic valve is connected between the eleventh electromagnetic valve and the first pump, a thirteenth electromagnetic valve is connected between the first pump and the first plate heat exchanger, the output end of the water (solution) side of the first plate heat exchanger is connected with the input end of a fourteenth electromagnetic valve, and a fifteenth electromagnetic valve is connected between the fourteenth electromagnetic valve and the heat source tower. The soil energy supply loop comprises a buried pipe, a second plate heat exchanger, a second pump, a ninth electromagnetic valve and a tenth electromagnetic valve. In the soil function loop, the output end of the buried pipe is connected with the input end of a second pump, the output end of the second pump is connected with the input end of a ninth electromagnetic valve, the output end of the ninth electromagnetic valve is connected with the water side input end of a second plate type heat exchanger, the water side output end of the second plate type heat exchanger is connected with the input end of a tenth electromagnetic valve, and the output end of the tenth electromagnetic valve is connected with the input end of the buried pipe. The solution regeneration loop comprises a solution regeneration device, a third indoor heat exchanger, a fourth indoor heat exchanger, a third plate heat exchanger, a third pump, a fourth pump, a sixteenth electromagnetic valve, a seventeenth electromagnetic valve, an eighteenth electromagnetic valve, a nineteenth electromagnetic valve, a twentieth electromagnetic valve, a twenty-first electromagnetic valve, a twenty-second electromagnetic valve, a twenty-third electromagnetic valve and a twenty-fourth electromagnetic valve. In the solution regeneration loop, the output end of a heat source tower is connected with the input end of a sixteenth electromagnetic valve, the output end of the sixteenth electromagnetic valve is connected with the solution side input end of a solution regeneration device, the output end of the solution regeneration solution side is connected with the input end of a seventeenth electromagnetic valve, the output end of the seventeenth electromagnetic valve is connected with the input end of a third pump, an eighteenth electromagnetic valve is connected between the third pump and the heat source tower, the water side output end of the solution regeneration device is connected with the input end of a nineteenth electromagnetic valve, the input end of the nineteenth electromagnetic valve is connected with the input end of a fourth pump, the output end of the fourth pump is respectively connected with a twentieth electromagnetic valve and a twenty-first electromagnetic valve, the output end of the twentieth electromagnetic valve is connected with the input end of a third indoor heat exchanger, the output end of the twenty-first electromagnetic valve, and the twenty-second electromagnetic valve output end is connected with the first input end of the third plate heat exchanger, the first output end of the third plate heat exchanger is connected with the twenty-third electromagnetic valve input end, and the twenty-third electromagnetic valve output end and the twenty-fourth electromagnetic valve output end are connected with the water side input end of the solution regeneration device. The photo-thermal auxiliary regeneration loop comprises a solar heat collection plate, a third plate heat exchanger, a fifth pump, a twenty-fifth electromagnetic valve, a twenty-sixth electromagnetic valve and a twenty-seventh electromagnetic valve. In the photo-thermal auxiliary regeneration loop, the output end of the solar heat collection plate is connected with the input end of a twenty-fifth electromagnetic valve, the output end of the twenty-fifth electromagnetic valve is connected with the input end of a fifth pump, the output end of the fifth pump is connected with the input end of a twenty-sixth electromagnetic valve, the output end of the twenty-sixth electromagnetic valve is connected with the second input end of a third plate heat exchanger, the second output end of the third plate heat exchanger is connected with the input end of a twenty-seventh electromagnetic valve, and the output end of the twenty-seventh electromagnetic valve is connected with the input.
Further, in the system of the present invention, a plurality of indoor heat exchangers are included in both the exterior area and the interior area of the building.
Furthermore, in the system, a water pump in the heat source tower loop is a variable frequency water pump so as to match the load in the outer area of the building and achieve the aim of energy conservation.
Furthermore, in the system of the invention, when the concentration of the solution in the heat source tower is lower than a set value, the solution regeneration device is started, and the heat load in the building is used as the heat source for solution regeneration.
Furthermore, in the system, when the heat required by the solution regeneration is increased, the solar heat collecting plate is connected with the indoor heat exchanger in the building inner area in series to be used as a heat source for the solution regeneration.
Further, in the system of the invention, the ground pipe directly supplies cold or heat to users through the second plate heat exchanger when the temperature of the circulating medium in the ground pipe is lower than a set value in the beginning of summer or higher than the set value in the beginning of winter.
Furthermore, in the system, the heat source tower is independently used as a cold and heat source of the unit when the outdoor wet bulb temperature in summer is lower than a set value or the outdoor dry bulb temperature in winter is higher than the set value. The heat source tower and the buried pipe are connected in series to operate when the outdoor wet bulb temperature in summer is higher than a set value or the outdoor dry bulb temperature in winter is lower than a set value, and the heat source tower and the buried pipe are used as cold and heat sources of the unit together.
In the multi-source complementary distributed heat source tower heat pump system, a plurality of indoor heat exchangers in an outer building area in a refrigerant loop exchange heat with air in the outer building area, and an outdoor unit comprises two heat exchangers to exchange heat with an outdoor cold and heat source. The basic process is as follows: in summer refrigeration, low-temperature and low-pressure refrigerant exchanges heat with indoor air in the indoor heat exchanger and then enters the four-way reversing valve, the refrigerant coming out of the four-way reversing valve enters the oil separator after passing through the one-way valve and then enters the compressor, the low-temperature and low-pressure refrigerant is compressed by the compressor and then becomes high-temperature and high-pressure refrigerant, the high-temperature and high-pressure refrigerant comes out of the compressor and then enters the first plate heat exchanger after passing through the four-way reversing valve and the third electromagnetic valve, exchanges heat with water coming out of the heat source tower, then enters the second plate heat exchanger through the fourth electromagnetic valve and the fifth electromagnetic valve, exchanges heat with the water coming out of the buried pipe and then enters each indoor unit in the outer building area after passing through the sixth electromagnetic valve, the high-temperature and high-pressure refrigerant becomes low-temperature and low-, the refrigeration cycle is completed. When heat is supplied in winter, the high-temperature and high-pressure refrigerant exchanges heat with indoor air in the indoor heat exchanger and then is changed into low-temperature and low-pressure refrigerant through the expansion valve, the low-temperature and low-pressure refrigerant comes out of the indoor unit in the outer area of the building and then enters the second plate heat exchanger through the sixth electromagnetic valve, after exchanging heat with water from the buried pipe, the water enters the first plate heat exchanger through the fifth electromagnetic valve and the fourth electromagnetic valve, exchanges heat with solution from the heat source tower, enters the oil separator through the one-way valve, and then the refrigerant enters the compressor, the low-temperature low-pressure refrigerant is compressed by the compressor and then is changed into the high-temperature high-pressure refrigerant, the high-temperature high-pressure refrigerant enters the four-way reversing valve after coming out of the compressor, the high-temperature high-pressure refrigerant enters the plurality of indoor units in the outer building area respectively after coming out of the four-way reversing valve, and the high-temperature high-pressure refrigerant exchanges heat with indoor air in the indoor heat exchanger to complete the heating cycle.
In the multi-source complementary distributed heat source tower heat pump system, three modes are provided under the refrigerating working condition and the heating working condition: the system comprises a soil loop combined supply mode, a heat source tower heat pump single supply mode and a soil heat pump and heat source tower heat pump combined supply mode. Soil loop joint supply mode: in the early summer, the outdoor temperature is not high, or in the early winter, the outdoor temperature is not low, the required cold quantity or heat quantity in the outer building area is less, at the moment, the opening quantity of the indoor units is less, and the buried pipes can be independently used as cold and heat sources of the air conditioning system. The basic process is as follows: the refrigerant circuit and the soil energy supply circuit are opened, and the rest circuits are closed. In the refrigerant circuit, the third electromagnetic valve, the fourth electromagnetic valve and the eighth electromagnetic valve are closed, and the rest electromagnetic valves are opened, so that the refrigerant only flows through the second plate heat exchanger and exchanges heat with the water from the buried pipe, and the rest processes are consistent with the basic process of the refrigerant circuit. In the soil energy supply loop, a ninth electromagnetic valve and a tenth electromagnetic valve are opened, a second pump is opened, water in the buried pipe enters the second pump through the ninth electromagnetic valve, enters a second plate type heat exchanger through the ninth electromagnetic valve to exchange heat with the refrigerant, and then enters the buried pipe through the tenth electromagnetic valve to complete soil energy supply circulation. Heat source tower heat pump single supply mode: when the outdoor wet bulb temperature in summer is lower than a set value or the outdoor dry bulb temperature in winter is higher than a set value, the requirement of cold quantity or heat quantity in the outer area of the building is increased, and the opening quantity of the indoor units is increased, the heat source tower can be independently used as a cold and heat source of the air conditioning system. The basic process is as follows: the refrigerant loop and the energy supply loop of the heat source tower are opened, and the rest loops are closed. In the refrigerant circuit, the fifth electromagnetic valve, the sixth electromagnetic valve and the seventh electromagnetic valve are closed, and the rest electromagnetic valves are opened, so that the refrigerant only flows through the first plate heat exchanger and exchanges heat with water or solution from the heat source tower, and the rest processes are consistent with the basic process of the refrigerant circuit. In the energy supply loop of the heat source tower, an eleventh electromagnetic valve, a twelfth electromagnetic valve, a thirteenth electromagnetic valve, a fourteenth electromagnetic valve and a fifteenth electromagnetic valve are opened, a first pump is opened, water or solution from the heat source tower enters the first pump through the eleventh electromagnetic valve and the twelfth electromagnetic valve, the water or solution from the first pump enters a first plate heat exchanger through the thirteenth electromagnetic valve, exchanges heat with refrigerant and then enters the heat source tower through the fourteenth electromagnetic valve and the fifteenth electromagnetic valve, and the energy supply loop of the heat source tower is completed. The soil heat pump and heat source tower heat pump series connection mode: when the outdoor wet bulb temperature in summer is higher than a set value or the outdoor dry bulb temperature in winter is lower than the set value, the cold quantity or the cold quantity demand in the outer building area is continuously increased, and the opening number of the indoor units is continuously increased, the heat absorption capacity of the heat source tower cannot meet the unit load, and the heat source tower and the buried pipe are simultaneously used as cold and heat sources of the air conditioning system. The basic process is as follows: the refrigerant loop, the heat source tower energy supply loop and the soil energy supply loop are opened, and the rest loops are closed. In the refrigerant circuit, the seventh electromagnetic valve and the eighth electromagnetic valve are closed, and the rest electromagnetic valves are opened, so that the refrigerant simultaneously passes through the first plate heat exchanger and the second plate heat exchanger to exchange heat with water or solution from the heat source tower and water from the ground buried pipe, and the rest processes are consistent with the basic process of the refrigerant circuit. The basic process of the energy supply loop of the heat source tower is consistent with that of the energy supply loop of the heat source tower in the single-supply mode of the heat pump of the heat source tower. The basic process of the soil energy supply loop is consistent with that of the soil energy supply loop in the soil loop combined supply mode.
In the multi-source complementary distributed heat source tower heat pump system, when the solution in the heat source tower absorbs the moisture in the air and the concentration of the solution is lower than a set value, a solution regeneration loop is opened, and the rest loops are closed. In a large building, internal heat cannot be discharged due to the large size of the building, and at this time, the heat in the building is used as a heat source for solution regeneration to perform solution regeneration. The building inner area comprises a plurality of indoor heat exchangers, and water is used as a medium to transfer heat between air and solution in the building inner area.
In the multi-source complementary distributed heat source tower heat pump system, the solution regeneration has two modes: the building interior zone is in a single supply mode and the building interior zone is in a series connection mode with the solar heat collecting plate. In-building zone list supply mode: when the temperature of the water in the building is higher than the set value, the heat in the building is separately used as a heat source for solution regeneration. The basic process is as follows: the solution regeneration loop is opened and the remaining loops are closed. In the solution regeneration loop, the twenty-second electromagnetic valve and the twenty-third electromagnetic valve are closed, the rest electromagnetic valves are opened, and the third pump and the fourth pump are opened. The solution flows out of the heat source tower, enters the solution regeneration device from the solution side input end of the solution regeneration device through a sixteenth electromagnetic valve, is heated in the solution regeneration device, the concentration of the solution is high, then flows out of the solution side output end of the solution regeneration device, enters a third pump through a seventeenth electromagnetic valve, and is pumped into the heat source tower through the third pump. Meanwhile, the temperature of water is reduced due to heat absorbed by the solution in the solution regeneration device, the water enters a fourth pump after passing through a nineteenth electromagnetic valve after coming out from the water side output end of the solution regeneration device, the water is pumped into each indoor unit in the building through the fourth pump, the solution exchanges heat with air in the building in an indoor heat exchanger of each indoor unit, the temperature of the water is increased, the water enters the solution regeneration device from the water side input end of the solution regeneration device through a twenty-fourth electromagnetic valve after coming out from the indoor heat exchanger, the solution exchanges heat with the solution in the solution regeneration device, the temperature of the water is reduced, and solution regeneration circulation is completed. Building inner zone and solar panel series mode: when the water temperature in the building is lower than a set value, the heat in the building can not meet the requirement of solution regeneration, and the building inner area and the solar heat collecting plate are simultaneously used as heat sources of the solution regeneration. The basic process is as follows: the solution regeneration loop and the photo-thermal auxiliary regeneration loop are opened, and the other loops are closed. In the solution regeneration loop, the twenty-fourth electromagnetic valve is closed, the rest electromagnetic valves are opened, and the third pump and the fourth pump are opened. At the moment, water enters the third plate heat exchanger after passing through the twenty-second electromagnetic valve after coming out of the indoor heat exchanger in the building inner area, exchanges heat with water coming out of the solar heat collecting plate, enters the solution regeneration device from the water side input end of the solution regeneration device through the twenty-third electromagnetic valve, and the rest processes are consistent with the basic process of the solution regeneration loop in the single supply mode in the building inner area. In the photo-thermal auxiliary regeneration loop, a twenty-fifth electromagnetic valve, a twenty-sixth electromagnetic valve and a twenty-seventh electromagnetic valve are opened, and a fifth pump is opened. At the moment, water enters the fifth pump through the twenty-fifth electromagnetic valve after coming out of the solar heat collecting plate, is pumped into the third plate heat exchanger through the fifth pump, exchanges heat with water coming out of the building inner area, and then enters the solar heat collecting plate through the twenty-seventh electromagnetic valve, and photo-thermal auxiliary regeneration circulation is completed.
Has the advantages that: compared with the prior art, the invention has the following advantages:
1. the invention combines a plurality of dispersed tail ends with the heat source tower heat pump, ensures the high-efficiency operation of a cold and heat source system, simultaneously realizes the independent and flexible control of rooms one by one, and improves the efficiency under partial load.
2. The invention combines the characteristics of the building, fully utilizes the heat in the building, realizes the autonomous regeneration of the solution, ensures the stable operation of the system and improves the system efficiency.
3. When the demand of solution regeneration heat is increased, the solar heat collection device is connected with the indoor heat exchanger in the building in series to provide heat for the solution regeneration device, so that the solution regeneration device can normally and stably operate under the condition of increased demand.
4. The heat source tower and the buried pipe are connected in series to operate when the outdoor wet bulb temperature in summer is higher than a set value or the outdoor dry bulb temperature in winter is lower than the set value, and are used as cold and heat sources of the unit together, so that the unit can operate normally and stably under severe working conditions.
5. When the temperature of the circulating medium in the underground pipe is lower than a set value in summer and the temperature of the circulating medium in the underground pipe is higher than the set value in winter, heat or cold is supplied to users through the heat exchanger independently, and the heat source tower does not need to operate, so that the energy consumption is greatly reduced.
Drawings
Fig. 1 is a schematic diagram of a multi-source complementary distributed heat source tower heat pump system according to the present invention.
In the figure: a compressor 1; an oil separator 2; a check valve 3; a four-way reversing valve 4; a first input 4a of the four-way reversing valve; a first output end 4b of the four-way reversing valve; a second output end 4c of the four-way reversing valve; a second input end 4d of the four-way reversing valve; a first indoor heat exchanger 5; a second indoor heat exchanger 6; a first plate heat exchanger 7; a first plate heat exchanger refrigerant side input 7 a; a first plate heat exchanger refrigerant side output 7 b; a water (solution) side input end 7c of the first plate heat exchanger; an output end 7d on the water (solution) side of the first plate heat exchanger; a second plate heat exchanger 8; a second plate heat exchanger refrigerant side input 8 a; a second plate heat exchanger refrigerant side output end 8 b; a water side input 8c of the second plate heat exchanger; a water side output end 8d of the second plate heat exchanger; a buried pipe 9; a heat source tower 10; a heat source tower output 10 a; heat source tower first input 10 b; a heat source tower second input 10 c; a solution regeneration device 11; a solution-side input end 11a of the solution regeneration device; a solution side output end 11b of the solution regeneration device; a water-side input end 11c of the solution regeneration device; a water side output end 11d of the solution regeneration device; a third plate heat exchanger 12; a third plate heat exchanger first input 12 a; a third plate heat exchanger first output 12 b; a third plate heat exchanger second input 12 c; a third plate heat exchanger second output 12 d; a solar heat collecting plate 13; a third indoor heat exchanger 14; a fourth indoor heat exchanger 15; a first expansion valve 16; a second expansion valve 17; a first pump 18; a second pump 19; a third pump 20; a fourth pump 21; a fifth pump 22; a first electromagnetic valve 23; a second electromagnetic valve 24; a third electromagnetic valve 25; a fourth electromagnetic valve 26; a fifth electromagnetic valve 27; a sixth electromagnetic valve 28; a seventh electromagnetic valve 29; an eighth electromagnetic valve 30; a ninth electromagnetic valve 31; a tenth electromagnetic valve 32; an eleventh electromagnetic valve 33; a twelfth electromagnetic valve 34; a thirteenth electromagnetic valve 35; a fourteenth electromagnetic valve 36; a fifteenth electromagnetic valve 37; a sixteenth electromagnetic valve 38; a seventeenth electromagnetic valve 39; an eighteenth electromagnetic valve 40; a nineteenth electromagnetic valve 41; a twentieth electromagnetic valve 42; a twenty-first solenoid valve 43; a twenty-second solenoid valve 44; a twenty-third solenoid valve 45; a twenty-fourth solenoid valve 46, a twenty-fifth solenoid valve 47, a twenty-sixth solenoid valve 48, and a twenty-seventh solenoid valve 49.
Detailed Description
The invention comprises a refrigerant loop, a heat source tower loop, a soil energy supply loop, a solution regeneration loop and a photo-thermal auxiliary regeneration loop. The refrigerant circuit comprises a compressor 1, an oil separator 2, a one-way valve 3, a four-way reversing valve 4, a first plate heat exchanger 7, a second plate heat exchanger 8, a first indoor heat exchanger 5, a second indoor heat exchanger 6, a first expansion valve 16, a second expansion valve 17, a first electromagnetic valve 23, a second electromagnetic valve 24, a third electromagnetic valve 25, a fourth electromagnetic valve 26, a fifth electromagnetic valve 27, a sixth electromagnetic valve 28, a seventh electromagnetic valve 29 and an eighth electromagnetic valve 30. In the refrigerant loop, the output end of the compressor 1 is connected with a first input end 4a of a four-way reversing valve, a first output end 4b of the four-way reversing valve is respectively connected with the input end of a third electromagnetic valve 29 and the input end of a seventh electromagnetic valve 32, the output end of the third electromagnetic valve 29 is connected with the refrigerant side input end 7a of a first plate heat exchanger, the refrigerant side output end 7b of the first plate heat exchanger is connected with the input end of a fourth electromagnetic valve 30, the output end of the fourth electromagnetic valve 30 and the output end of the seventh electromagnetic valve 32 are respectively connected with the input end of a fifth electromagnetic valve 27 and the input end of an eighth electromagnetic valve 28, the output end of the fifth electromagnetic valve 27 is connected with the refrigerant side input end 8a of a second plate heat exchanger, the refrigerant side output end 8b of the second plate heat exchanger is connected with the input end of a sixth electromagnetic valve 28, the output end of, the first expansion valve 16 is connected with the first indoor heat exchanger 5, the second expansion valve 17 is connected with the second indoor heat exchanger 6, the first indoor heat exchanger 5 is connected with the input end of the first electromagnetic valve 27, the second indoor heat exchanger 6 is connected with the input end of the second electromagnetic valve 28, the second input end 4c of the four-way reversing valve is respectively connected with the output end of the first electromagnetic valve 27 and the output end of the second electromagnetic valve 28, the second output end 4d of the four-way reversing valve is connected with the input end of the one-way valve 3, the output end of the one-way valve 3 is connected with the input end of the oil separator 2, and the oil separator 2 is connected with. The heat source tower loop comprises a heat source tower 10, a first pump 18, a first plate heat exchanger 7, an eleventh electromagnetic valve 33, a twelfth electromagnetic valve 34, a thirteenth electromagnetic valve 35, a fourteenth electromagnetic valve 36 and a fifteenth electromagnetic valve 37. In the heat source tower loop, the heat source tower output end 10a is connected with the input end of an eleventh electromagnetic valve 33, a twelfth electromagnetic valve 34 is connected between the eleventh electromagnetic valve 33 and the first pump 18, a thirteenth electromagnetic valve 35 is connected between the first pump 18 and the first plate heat exchanger 7, the water (solution) side output end 7d of the first plate heat exchanger is connected with the input end of a fourteenth electromagnetic valve 36, and a fifteenth electromagnetic valve 37 is connected between the fourteenth electromagnetic valve 36 and the heat source tower 10. The soil energy supply loop comprises a ground buried pipe 9, a second plate heat exchanger 8, a second pump 19, a ninth electromagnetic valve 31 and a tenth electromagnetic valve 32. In the soil energy supply return circuit, the 9 output of buried pipe links to each other with 19 inputs of second pump, and 19 outputs of second pump link to each other with 31 inputs of ninth solenoid valve, and 31 outputs of ninth solenoid valve link to each other with second plate heat exchanger water side input 8c, and second plate heat exchanger water side output 8d links to each other with tenth solenoid valve 32 input, and the 32 outputs of tenth solenoid valve link to each other with the 9 inputs of buried pipe. The solution regeneration loop comprises a solution regeneration device 11, a third indoor heat exchanger 14, a fourth indoor heat exchanger 15, a third plate heat exchanger 12, a third pump 20, a fourth pump 21, a sixteenth electromagnetic valve 38, a seventeenth electromagnetic valve 39, an eighteenth electromagnetic valve 40, a nineteenth electromagnetic valve 41, a twentieth electromagnetic valve 42, a twenty-first electromagnetic valve 43, a twenty-second electromagnetic valve 44, a twenty-third electromagnetic valve 45 and a twenty-fourth electromagnetic valve 46. In the solution regeneration loop, the output end 10a of the heat source tower is connected with the input end of a sixteenth electromagnetic valve 38, the output end of the sixteenth electromagnetic valve 38 is connected with the solution side input end 11a of the solution regeneration device, the output end 11b of the solution regeneration solution side is connected with the input end of a seventeenth electromagnetic valve 39, the output end of the seventeenth electromagnetic valve 39 is connected with the input end of a third pump 20, an eighteenth electromagnetic valve 40 is connected between the third pump 20 and the heat source tower 10, the water side output end 11d of the solution regeneration device is connected with the input end of a nineteenth electromagnetic valve 41, the input end of the nineteenth electromagnetic valve 41 is connected with the input end of a fourth pump 21, the output end of the fourth pump 21 is respectively connected with a twentieth electromagnetic valve 42 and a twenty-first electromagnetic valve 43, the output end of the twentieth electromagnetic valve 42 is connected with the input end of a third indoor heat exchanger 14, the output The output end of the twenty-second electromagnetic valve 44 is connected with the first input end 12a of the third plate heat exchanger, the first output end 12b of the third plate heat exchanger is connected with the twenty-third electromagnetic valve input end 45, and the output end of the twenty-third electromagnetic valve 45 and the output end of the twenty-fourth electromagnetic valve 46 are connected with the water side input end 11c of the solution regeneration device. The photo-thermal auxiliary regeneration loop comprises a solar heat collecting plate 13, a fifth pump 22, a twenty-fifth electromagnetic valve 47, a twenty-sixth electromagnetic valve 48 and a twenty-seventh electromagnetic valve 49. In the photo-thermal auxiliary regeneration loop, the output end of the solar heat collection plate 13 is connected with the input end of a twenty-fifth electromagnetic valve 47, the output end of the twenty-fifth electromagnetic valve 47 is connected with the input end of a fifth pump 22, the output end of the fifth pump 22 is connected with the input end of a twenty-sixth electromagnetic valve 48, the output end of the twenty-sixth electromagnetic valve 48 is connected with the second input end 12c of a third plate heat exchanger, the second output end 12d of the third plate heat exchanger is connected with the input end of a twenty-seventh electromagnetic valve 49, and the output end of the twenty-seventh electromagnetic valve 49 is connected with.
A plurality of indoor heat exchangers in the outer building area in the refrigerant loop exchange heat with air in the outer area, and the outdoor unit comprises two heat exchangers to exchange heat with an outdoor cold and heat source. The basic process is as follows: in summer refrigeration, low-temperature and low-pressure refrigerant exchanges heat with indoor air in the first indoor heat exchanger 5 and the second indoor heat exchanger 6 and then enters the four-way reversing valve 4, the refrigerant coming out of the four-way reversing valve 4 passes through the check valve 3 and then enters the oil separator 2 and then enters the compressor 1, the low-temperature and low-pressure refrigerant is compressed by the compressor 1 and then becomes high-temperature and high-pressure refrigerant, the high-temperature and high-pressure refrigerant comes out of the compressor 1 and then passes through the four-way reversing valve 4 and the third electromagnetic valve 25 and then enters the first plate heat exchanger 7, the high-temperature and high-pressure refrigerant exchanges heat with water coming out of the heat source tower 10 and then enters each indoor unit in the outer building area through the fourth electromagnetic valve 26 and the fifth electromagnetic valve 27, the high-temperature and high-pressure refrigerant passes through the first electromagnetic valve 16 and the second expansion valve 17 in the indoor units and then becomes low-, the low-temperature and low-pressure refrigerant enters the first indoor heat exchanger 5 and the second indoor heat exchanger 6 and then exchanges heat with indoor air, and the refrigeration cycle is completed. In winter, when heat is supplied, a high-temperature and high-pressure refrigerant exchanges heat with indoor air in the first indoor heat exchanger 5 and the second indoor heat exchanger 6 and then is changed into a low-temperature and low-pressure refrigerant through the first expansion valve 16 and the second expansion valve 17, the low-temperature and low-pressure refrigerant is discharged from indoor units in an outer building area and then enters the second plate heat exchanger 8 through the sixth electromagnetic valve 28, exchanges heat with water discharged from the buried pipe 9 and then enters the first plate heat exchanger 7 through the fifth electromagnetic valve 27 and the fourth electromagnetic valve 26, exchanges heat with a solution discharged from the heat source tower 10, enters the oil separator 2 through the one-way valve 3 and then enters the compressor 1, the low-temperature and low-pressure refrigerant is compressed by the compressor 1 and then is changed into a high-temperature and high-pressure refrigerant, the high-temperature and high-pressure refrigerant enters the four-way reversing valve 4 after exiting from, the high-temperature and high-pressure refrigerant exchanges heat with indoor air in the first indoor heat exchanger 5 and the second indoor heat exchanger 6, and a heating cycle is completed.
In the heat source tower heat pump system, under the refrigerating working condition and the heating working condition, three modes are provided: the system comprises a soil loop combined supply mode, a heat source tower heat pump single supply mode and a soil heat pump and heat source tower heat pump combined supply mode. Soil loop joint supply mode: in the early summer, the outdoor temperature is not high, or in the early winter, the outdoor temperature is not low, the required cold quantity or heat quantity in the outer building area is less, at the moment, the opening quantity of the indoor units is less, and the buried pipes 9 can be independently used as cold and heat sources of the air conditioning system. The basic process is as follows: the refrigerant circuit and the soil energy supply circuit are opened, and the rest circuits are closed. In the refrigerant circuit, the third electromagnetic valve 25, the fourth electromagnetic valve 26 and the eighth electromagnetic valve 30 are closed, and the rest of the electromagnetic valves are opened, so that the refrigerant only flows through the second plate heat exchanger 8 to exchange heat with the water coming out of the buried pipe 9, and the rest of the processes are consistent with the process of the refrigerant circuit described above. In the soil energy supply loop, the ninth electromagnetic valve 31 and the tenth electromagnetic valve 32 are opened, the second pump 19 is opened, water in the buried pipe 9 enters the second pump 19, enters the second plate heat exchanger 8 through the ninth electromagnetic valve 31 to exchange heat with the refrigerant, and then enters the buried pipe 9 through the tenth electromagnetic valve 32, and the soil energy supply circulation is completed. Heat source tower heat pump single supply mode: when the outdoor wet bulb temperature in summer is lower than the set value or the outdoor dry bulb temperature in winter is higher than the set value, the requirement of cold quantity or heat quantity in the outer area of the building is increased, and the opening quantity of the indoor units is increased, the heat source tower 10 can be independently used as a cold and heat source of the air conditioning system. The basic process is as follows: the refrigerant loop and the energy supply loop of the heat source tower are opened, and the rest loops are closed. In the refrigerant circuit, the fifth electromagnetic valve 27, the sixth electromagnetic valve 28 and the seventh electromagnetic valve 29 are closed, and the rest of the electromagnetic valves are opened, so that the refrigerant only flows through the first plate heat exchanger 7 to exchange heat with the water or the solution from the heat source tower 10, and the rest of the process is consistent with the basic process of the refrigerant circuit described above. In the heat source tower energy supply loop, an eleventh electromagnetic valve 33, a twelfth electromagnetic valve 34, a thirteenth electromagnetic valve 35, a fourteenth electromagnetic valve 36 and a fifteenth electromagnetic valve 37 are opened, the first pump 18 is opened, water or solution from the heat source tower 10 enters the first pump 18 through the eleventh electromagnetic valve 33 and the twelfth electromagnetic valve 34, the water or solution from the first pump 18 enters the first plate heat exchanger 7 through the thirteenth electromagnetic valve 35, exchanges heat with refrigerant, enters the heat source tower 10 through the fourteenth electromagnetic valve 36 and the fifteenth electromagnetic valve 37, and the heat source tower energy supply loop is completed. The soil heat pump and heat source tower heat pump series connection mode: when the outdoor wet bulb temperature in summer is higher than the set value or the outdoor dry bulb temperature in winter is lower than the set value, the cold quantity or the cold quantity demand in the outer building area continues to increase, and the opening number of the indoor units continues to increase, the heat absorption capacity of the heat source tower 10 cannot meet the unit load, and the heat source tower 10 and the buried pipe 9 are simultaneously used as the cold and heat sources of the air conditioning system. The basic process is as follows: the refrigerant loop, the heat source tower energy supply loop and the soil energy supply loop are opened, and the rest loops are closed. In the refrigerant circuit, the seventh electromagnetic valve 29 and the eighth electromagnetic valve 30 are closed, and the rest of the electromagnetic valves are opened, so that the refrigerant simultaneously passes through the first plate heat exchanger 7 and the second plate heat exchanger 8 to exchange heat with the water or the solution from the heat source tower 10 and the water from the buried pipe 9, and the rest of the process is consistent with the basic process of the refrigerant circuit. The basic process of the energy supply loop of the heat source tower is consistent with that of the energy supply loop of the heat source tower in the single-supply mode of the heat pump of the heat source tower. The basic process of the soil energy supply loop is consistent with that of the soil energy supply loop in the soil loop combined supply mode.
In the multi-source complementary distributed heat source tower heat pump system, when the solution in the heat source tower 10 absorbs the moisture in the air and the concentration of the solution is lower than a set value, a solution regeneration loop is opened, and the rest loops are closed. In a large building, internal heat cannot be discharged due to the large size of the building, and at this time, the heat in the building is used as a heat source for solution regeneration to perform solution regeneration. The building inner area comprises a plurality of indoor heat exchangers, and water is used as a medium to transfer heat between air and solution in the building inner area.
In the multi-source complementary distributed heat source tower heat pump system, the solution regeneration has two modes: the building interior zone is in a single supply mode and the building interior zone is in a series connection mode with the solar heat collecting plate. In-building zone list supply mode: when the temperature of the water in the building is higher than the set value, the heat in the building is separately used as a heat source for solution regeneration. The basic process is as follows: the solution regeneration loop is opened and the remaining loops are closed. In the solution regeneration circuit, the twenty-second solenoid valve 44 and the twenty-third solenoid valve 45 are closed, the remaining solenoid valves are opened, and the third pump 20 and the fourth pump 21 are opened. The solution from the heat source tower 10 enters the solution regeneration device 11 from the solution side input end 11a of the solution regeneration device through the sixteenth electromagnetic valve 38, the solution is heated in the solution regeneration device 11, the concentration of the solution becomes high, then the solution from the solution side output end 11b of the solution regeneration device enters the third pump 20 through the seventeenth electromagnetic valve 39, and the solution is pumped into the heat source tower 10 through the third pump 20. Meanwhile, the temperature of the water is reduced due to the heat absorbed by the solution in the solution regeneration device 11, the water flows out from the water side output end 11d of the solution regeneration device and then enters the fourth pump 21 through the nineteenth electromagnetic valve 41, the water is pumped into each indoor unit in the building through the fourth pump 21, the solution exchanges heat with the air in the building in the third indoor heat exchanger 14 and the fourth indoor heat exchanger 15 of each indoor unit, the temperature of the water is increased, the water flows out from the third indoor heat exchanger 14 and the fourth indoor heat exchanger 15 and then enters the solution regeneration device 11 from the water side input end 11c of the solution regeneration device through the twenty-fourth electromagnetic valve 46 to exchange heat with the solution in the solution regeneration device 11, the temperature of the water is reduced, and the solution regeneration cycle is completed. Building inner zone and solar panel series mode: when the water temperature in the building is lower than a set value, the heat in the building can not meet the requirement of solution regeneration, and the building inner area and the solar heat collecting plate are simultaneously used as heat sources of the solution regeneration. The basic process is as follows: the solution regeneration loop and the photo-thermal auxiliary regeneration loop are opened, and the other loops are closed. In the solution regeneration circuit, the twenty-fourth solenoid valve 46 is closed, the remaining solenoid valves are opened, and the third pump 20 and the fourth pump 21 are opened. At this time, the water comes out from the third indoor heat exchanger 14 and the fourth indoor heat exchanger 15 in the building inner area, passes through the twenty-second electromagnetic valve 44, enters the third plate heat exchanger 12, exchanges heat with the water coming out from the solar heat collecting plate 13, enters the solution regeneration device 11 from the water side input end 11c of the solution regeneration device through the twenty-third electromagnetic valve 45, and the rest processes are consistent with the basic process of the solution regeneration loop in the single supply mode of the building inner area. In the photo-thermal auxiliary regeneration circuit, the twenty-fifth solenoid valve 47, the twenty-sixth solenoid valve 48, and the twenty-seventh solenoid valve 49 are opened, and the fifth pump 24 is opened. At this time, the water comes out of the solar heat collecting plate 13 and enters the fifth pump 24 through the twenty-fifth electromagnetic valve 47, the water is pumped into the third plate heat exchanger 12 through the fifth pump 24, exchanges heat with the water coming out of the building inner area and then enters the solar heat collecting plate 13 through the twenty-seventh electromagnetic valve 49, and the photo-thermal auxiliary regeneration cycle is completed.
Claims (1)
1. The utility model provides a complementary distributed heat source tower heat pump system of multisource which characterized in that: the system comprises a refrigerant loop, a heat source tower loop, a soil energy supply loop, a solution regeneration loop and a photo-thermal auxiliary regeneration loop;
the refrigerant loop comprises a compressor (1), an oil separator (2), a one-way valve (3), a four-way reversing valve (4), a first plate heat exchanger (7), a second plate heat exchanger (8), a first indoor heat exchanger (5), a second indoor heat exchanger (6), a first expansion valve (16) and a second expansion valve (17), the refrigerant loop is connected with a heat source tower loop through the first plate heat exchanger (7) and is connected with the heat source tower loop, the input end of the compressor (1) is connected with the oil separator (2), the output end of the compressor (1) is connected with the four-way reversing valve (4), the four-way reversing valve (4) is connected with the first plate heat exchanger (7), a seventh electromagnetic valve (29) is connected between the first input end and the first output end of the first plate heat exchanger (7) in parallel, and the first plate heat exchanger (7) is connected with the second plate heat exchanger (8), an eighth electromagnetic valve (30) is connected between the first input end and the first output end of the second plate heat exchanger (8) in parallel, the second plate heat exchanger (8) is connected with the first indoor heat exchanger (5) and the second indoor heat exchanger (6), the first indoor heat exchanger (5) and the second indoor heat exchanger (6) are connected with a four-way reversing valve, and the four-way reversing valve (4) is connected with the oil separator (2) through a one-way valve (3);
the heat source tower loop comprises a heat source tower (10), a first pump (18) and a first plate heat exchanger (7), wherein the output end of the heat source tower (10) is connected with the first pump (18) through an electromagnetic valve, the first pump (18) is connected with the first plate heat exchanger (7), and the first plate heat exchanger (7) is connected with the input end of the heat source tower (10); when the wet bulb temperature is lower than a set value or the dry bulb temperature is higher than a set value, the heat source tower is independently used as a cold source and a heat source;
the soil energy supply loop comprises a buried pipe (9), a second plate heat exchanger (8) and a second pump (19), the soil energy supply loop is connected with a refrigerant loop through the second plate heat exchanger (8), the output end of the buried pipe (9) is connected with the inlet of the second pump (19), the output end of the second pump (19) is connected with the water side input end of the second plate heat exchanger (8) through a ninth electromagnetic valve (31), and the water side output end of the second plate heat exchanger (8) is connected with the input end of the buried pipe (9) through a tenth electromagnetic valve (32); when the temperature of the circulating medium is lower than a set value or higher than the set value, the ground buried pipe supplies heat or cold to users through the second plate heat exchanger independently, and the heat source tower stops running; the heat source tower and the buried pipe are connected in series to operate when the outdoor wet bulb temperature is higher than a set value or the outdoor dry bulb temperature is lower than a set value, and the heat source tower and the buried pipe are jointly used as cold and heat sources of the unit;
the solution regeneration loop comprises a solution regeneration device (11), a third indoor heat exchanger (14), a fourth indoor heat exchanger (15), a third plate heat exchanger (12), a third pump (20) and a fourth pump (21), the output end of the heat source tower (10) is connected with the solution side input end of the solution regeneration device (11), the solution side output end of the solution regeneration device (11) is connected with the second input end of the heat source tower (10) through the third pump (20), the water side output end of the solution regeneration device (11) is connected with the third indoor heat exchanger (14) and the fourth indoor heat exchanger (15) through the fourth pump (21), the third indoor heat exchanger (14) and the fourth indoor heat exchanger (15) are connected with the third plate heat exchanger (12), a twenty-fourth electromagnetic valve (46) is connected between the input end and the output end of the third plate heat exchanger (12) in parallel, the output end of the third plate heat exchanger (12) is connected with the solution regeneration device (11); when the concentration of the solution in the heat source tower is lower than a set value, the solution regeneration device is started; the solution regeneration comprises a construction inner zone single supply mode and a construction inner zone and solar heat collection plate series connection mode; when the heat required by the solution regeneration is increased, the solar heat collecting plate is connected with the heat exchanger in series;
the photothermal auxiliary regeneration loop comprises a solar heat collection plate (13), a third plate heat exchanger (12) and a fifth pump (22), the photothermal auxiliary loop is connected with the solution regeneration loop through the third plate heat exchanger (12), the output end of the solar heat collection plate (13) is connected with the fifth pump (22) through a twenty-fifth electromagnetic valve, the fifth pump (22) is connected with the third plate heat exchanger (12) through a twenty-sixth electromagnetic valve, and the output end of the third plate heat exchanger (12) is connected with the solar heat collection plate (13) through a twenty-seventh electromagnetic valve; when the solution regeneration heat demand is increased, the solar heat collecting plate is connected with the heat exchanger in series to provide heat for the solution regeneration device.
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| CN112880240A (en) * | 2021-01-31 | 2021-06-01 | 广东纽恩泰新能源科技发展有限公司 | Multi-source multi-working-condition refrigerating system with low-grade energy preparation equipment |
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| CN110068171A (en) * | 2019-04-29 | 2019-07-30 | 东南大学 | A kind of novel multi-source complementation Frostless air-source heat pump system |
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| US4408596A (en) * | 1980-09-25 | 1983-10-11 | Worf Douglas L | Heat exchange system |
| CN1847744B (en) * | 2006-04-18 | 2011-01-19 | 康健 | Out-of-season solar energy utilizing technology for heat accumulation to warm and cold accumulation to cool |
| CN102128511A (en) * | 2011-04-04 | 2011-07-20 | 刘雄 | Double heat source heat pump air-conditioning equipment |
| CN202485482U (en) * | 2011-11-25 | 2012-10-10 | 北京紫荆信达节能科技有限公司 | Heat source tower with solution regeneration function |
| CN106642789B (en) * | 2016-11-28 | 2022-06-14 | 东南大学 | Heat source tower heat pump system for realizing comprehensive utilization of solar energy and seasonal soil energy storage |
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