CN101806515B - High-efficiency hot water tri-generation system for solar air conditioner - Google Patents

High-efficiency hot water tri-generation system for solar air conditioner Download PDF

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CN101806515B
CN101806515B CN2010101333441A CN201010133344A CN101806515B CN 101806515 B CN101806515 B CN 101806515B CN 2010101333441 A CN2010101333441 A CN 2010101333441A CN 201010133344 A CN201010133344 A CN 201010133344A CN 101806515 B CN101806515 B CN 101806515B
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heat exchanger
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hot water
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CN101806515A (en
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江乐新
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江乐新
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Abstract

The invention relates to a hot water tri-generation system for a solar air conditioner, comprising a compressor (1), a hot water heat exchanger (4), an air heat exchanger (6), an air conditioner heat exchanger (10), a heat storage device (12), a heat insulating water tank (15), a solar heat collector (16) and the like, and adopting the structure that three heat exchangers are in mixed connection and double four-way reversing valves are arranged. Due to the comprehensive utilization of regenerative resources comprising air energy, solar energy and the like, the invention can not only overcome the defects of single function, insufficient excavation of the energy utilization efficiency, and the like of the traditional air conditioner and hot water generator, but also solve the problem of low energy utilization rate of the general solar air conditioner, and has the effects of high efficiency, energy saving, safety, reliability, environmental protection and the like.

Description

Hot water tri-generation system for solar air conditioner
Technical field
The present invention relates to solar air conditioning and water heating system, regenerative resources such as particularly a kind of comprehensive utilization solar energy, air ability realize refrigeration, heat and the high-efficient energy-saving environment friendly system of health hot water three alliances.
Background technology
A kind of mode of solar air-conditioner system of China is to realize the heat of solar energy is converted into the mode of idle call cold water through absorption or adsorbent refrigerator at present; When the solar energy heating temperature below 90 ℃ the time, its heat-cold conversion efficiency generally is merely 0.5~0.8.Another kind of mode is to utilize solar energy power generating; Electricity with producing drives electronic compressed air conditioner; Electricity compressed air conditioner electricity-cold conversion coefficient is 4~6, the conversion ratio that the heat that the solar energy power generating heat collector receives converts electric energy into be 10% o'clock then refrigerating efficiency also be 0.4~0.6.This dual mode heat energy utilization rate is all low, and this also just causes the solar energy heating area of needs big, and system's investment is high.Domestic solar airconditioning hot water technique yet is in conceptual phase.All kinds of solar air-conditioner systems all exist initial cost excessive, and system is too complicated, and collecting system efficient is poor, the problem that collector area is excessive.
Summary of the invention
The technical problem that the present invention will solve is; Deficiency to prior art exists proposes a kind of hot water tri-generation system for solar air conditioner, and it can reduce the power consumption of air conditioning hot unit to greatest extent; The preferential mode that adopts water-cooled during refrigeration, and reclaim condensation heat and produce health hot water; Heat and make full use of when producing health hot water solar energy; Reach comprehensive utilization solar energy with the air ability, use the purpose of electric energy less as far as possible with the method for optimum; Not only can overcome shortcomings such as traditional air-conditioning, hot water machine function singleness, Energy Efficiency Ratio are low, efficient instability; Also can solve the low problem of general solar airconditioning energy utilization rate, produce hot water at the idle air-conditioning unit of script capable of using in season in spring and autumn simultaneously, improve the annual utilization rate of equipment.
Technical scheme of the present invention is; Said hot water tri-generation system for solar air conditioner comprises accessories such as compressor, hot water heat exchanger, air heat exchanger, air-condition heat exchanger, regenerative apparatus, attemperater, solar thermal collector; Its design feature is; The working medium suction inlet of said compressor connects with the D port of first four-way change-over valve; The sender property outlet of this compressor connects with the A port of second four-way change-over valve, and the B port of first four-way change-over valve connects with the D port of second four-way change-over valve, and the B port of second four-way change-over valve connects with a working medium port of hot water heat exchanger; Another working medium port of hot water heat exchanger connects with the A port of first three-way diverter valve; The C port of second four-way change-over valve connects with the C port of first three-way diverter valve, and the C port of first four-way change-over valve connects with a working medium port of air heat exchanger, and the A port of this first four-way change-over valve connects with a working medium port of air-condition heat exchanger; Another working medium port of air heat exchanger through parallel connection first expansion valve 7 of first check valve connect with the B port of first three-way diverter valve, another working medium port of air-condition heat exchanger through parallel connection second expansion valve of second check valve connect with the B port of first three-way diverter valve; The air-condition heat exchanger water side connects with the A port of second three-way diverter valve, the B port of this second three-way diverter valve and a pair of water-in and water-out port corresponding be connected of C port with regenerative apparatus; Another of this regenerative apparatus is to go out, intake port corresponding connect of water-in and water-out port with solar thermal collector; The a pair of water-in and water-out port of hot water heat exchange with attemperater a pair of go out, water inlet end is corresponding connects, another of attemperater to into and out of water end (W.E.) with the going out of solar thermal collector, water inlet end is corresponding connects.
Below make and further specifying.
The present invention is the basis with solar energy heat collecting module and electric compression pump type heat central air-conditioning unit; Realized simultaneously that in same unit air-cooled heat pump air-conditioning equipment, air source heat pump hot water facility and solar thermal collector effectively cooperate the function that air-conditioning and hot water are provided; Solar airconditioning for a kind of novel concept; It has fully utilized air ability and solar energy; With the perfect adaptation that solar energy heating is technological, heat pump techniques is applied to central air-conditioning and hot water unit, realized the optimum Match of solar energy heat collector and electric compression central air-conditioning unit, given full play to the high characteristics of electric compression air-conditioning unit refrigerating efficiency on the one hand; Make full use of solar energy on the other hand, improved the energy utilization rate of unit greatly.
The operation principle of system of the present invention is, summer, the air-condition heat exchanger that links to each other with air conditioning terminal was the evaporation ends heat absorption when freezing, and hot water heat exchanger is a condensation end during beginning, and absorption refrigeration is discharged condensation heat and produced health hot water; Along with hot water temperature's continuous rising, condensation temperature increases, the corresponding reduction of refrigeration efficiency, and at this moment switching to air heat exchanger is that condensation end is discharged used heat, the hot water in the attemperater then utilizes solar energy hot water to be heated to the temperature of setting; During the winter heat supply; Make full use of solar energy to attemperater and regenerative apparatus heating; When overcast and rainy intensity of solar radiation was not enough, the employing air heat exchanger was an evaporimeter, and air-condition heat exchanger carries out air-conditioning as condenser and heats; Also can hot water heat exchanger and air-condition heat exchanger be connected in series as condenser, when heating, produce health hot water; Regenerative apparatus is except using solar-heating, also can be to its heat supply when heat pump heats, in needs, by regenerative apparatus to user's heat supply; Heat during defrosting in the regenerative apparatus capable of using reduces the time of defrosting; When not needing season in spring and autumn cooling and warming only need produce health hot water; Mode with solar heat pump is moved; As the solar time with the water in the solar heating and thermal insulating water tank, unit was with the water in the mode heat tracing water tank of air-source heat pump hot water group when solar energy was not enough.
System of the present invention mainly contains refrigeration and heats water, heats water, heats and heat water, four kinds of mode of operations of defrosting, system works flow process explanation (referring to Fig. 1) as follows under different working modes.
(1) freeze and heat the water conservancy project operation mode: the AC of second three-way diverter valve 13 links to each other, and air-condition heat exchanger 10 is an evaporimeter, does not absorb heat the end system from air-conditioning system is freezed; Hot water heat exchanger 4 is a condensation end during beginning, and the AD of first four-way change-over valve 2 is communicated with, BC is communicated with, and the AB of second four-way change-over valve 3 is communicated with, CD is communicated with; The AB of first three-way diverter valve 5 is communicated with, and becomes the gas of low-temp low-pressure after cold-producing medium evaporates in air-condition heat exchanger 10, gets into compressor 1 through first four-way change-over valve, 2 backs; Become the gas of HTHP after the compression, again through behind second four-way change-over valve 3, condensation heat release in hot water heat exchanger 4; Become the liquid of cryogenic high pressure; Through first three-way diverter valve 5, after 9 step-downs of second expansion valve, get into air-condition heat exchanger 10 at last, the circulation of beginning next round; Continuous rising along with attemperater 15 water temperatures; The unit condensation temperature increases, and refrigerating capacity correspondingly reduces, and switch to air heat exchanger 6 as condenser this moment; Promptly the commutation position of first four-way change-over valve 2 is constant; The AD of second four-way change-over valve 3 links to each other, and after cold-producing medium comes out from compressor, gets into air heat exchanger 6 heat that leaves through second four-way change-over valve 3, first four-way change-over valve; Through getting back to air-condition heat exchanger 10 after 9 step-downs of second expansion valve, get into the next round circulation; Simultaneously, can utilize solar thermal collector 16 hot water in the attemperater 15 to be heated to the temperature that needs.
(2) heat the water conservancy project operation mode separately: mainly utilize solar thermal collector 16 heat production water season in spring and autumn, insufficient section is replenished by heat pump.When heat pump heats water separately; The AB of first three-way diverter valve 5 links to each other; The CD of first four-way change-over valve 2 is connected; The AB of second four-way change-over valve 3 is connected, and cold-producing medium evaporates the back and gets into compressor 1 through first four-way change-over valve 2 in air heat exchanger 6, and the high temperature and high pressure gas that comes out from compressor is that attemperater provides heat through the 4 condensation heat releases of second four-way change-over valve, 3 entering hot water heat exchangers; Condensed cryogenic high pressure refrigerant liquid is successively through getting back to air heat exchanger 6 behind first three-way diverter valve 5, first expansion valve 7, the circulation of beginning next round.
(3) heat and heat the water conservancy project operation mode: when solar radiation is strong, utilize solar thermal collector 16 heating and heat production water, when solar energy was not enough, the unlatching heat pump heated and replenishes.When heating separately; The AB of first four-way change-over valve 2 is connected, CD is connected, and the AD of second four-way change-over valve 3 is connected, BC is connected, and cold-producing medium is after air heat exchanger 6 evaporations; Get into compressors 1 through first four-way change-over valve 2, second four-way change-over valve 3 back; Enter into air-condition heat exchanger 10 through second four-way change-over valve 3 again, heat is offered not end system of air-conditioning, at this moment; The AC of second three-way diverter valve 13 is connected and directly for the air-conditioning system heat supply, and it is the air-conditioning system heat supply that AB is connected when dashing heat to regenerative apparatus; Unit can provide health hot water when heating; This moment the AB of first four-way change-over valve 2 be connected, CD is connected, the AB of second four-way change-over valve 3 is connected, DC is connected, the AC of first three-way diverter valve 5 links to each other; Cold-producing medium is after air heat exchanger 6 evaporations; Get into compressors 1 through first four-way change-over valve 2, and get into hot water heat exchangers 4 and heat water, then get into air-condition heat exchangers 10 and carry out the condensation heat release through first three-way diverter valve 5, second four-way change-over valve 3, first four-way change-over valve 2 successively with crossing second four-way change-over valve 3; Get back to air heat exchanger 6 by 7 step-downs of first expansion valve at last, get into the next round circulation.The control system can preferentially heat or preferentially heat water according to user's needs.
(4) defrosting mode of operation: heat in the winter time or when producing health hot water; Air heat exchanger 6 frosting sometimes; At this moment can for absorbing regenerative apparatus 12 heats, evaporimeter defrost by air-condition heat exchanger 10; The AB of second three-way diverter valve 13 is connected, and the AD of first four-way change-over valve 2 and second four-way change-over valve 3 is connected, BC is connected, and cold-producing medium is after air-condition heat exchanger 10 heat absorption evaporations; Get into compressor 1 through first four-way change-over valve 2; Get into air heat exchangers 6 condensation heat releases and defrost through second four-way change-over valve 3, first four-way change-over valve 2 back successively then, through 9 step-downs of second expansion valve after, get back to air-condition heat exchanger 10, get into next round and circulate.
More than four kinds of different running mode can automatically switch according to different climatic conditions, solar radiation intensity and user's request through intelligence control system; Under the situation that fully satisfies the multi-functional demand of user, reach the purpose that maximum improves energy utilization rate.
Heat pump in the hot water tri-generation system for solar air conditioner of the present invention only uses the critical piece (like compressor etc.) of a cover heat pump, and system has adopted three heat exchangers to mix to connect, the structures of two four-way change-over valves; Three heat exchangers can be the heat exchangers of new and effective heat exchange of heat pipe or other patterns; Heat pipe in the heat exchange of heat pipe is a kind of high-performance heat transfer components; The capacity of heat transmission is very high; With its form heat exchange of heat pipe not only have the intrinsic heat output of heat pipe big, have a narrow range of temperature, characteristics such as volume in light weight is little, thermal response is rapid, but also have easy for installation, easy to maintenance, long service life, characteristics such as drag losses is little, the heat transfer runner is convenient to separate, do not leak through with each other; It can be phase transition heat accumulation unit or other regenerative apparatuses that air-condition heat exchanger place string has regenerative apparatus, regenerative apparatus.The solar energy heat collector of said energy-efficient solar airconditioning hot water integrated machine adopts the hot pipe solar heat collector, also can adopt the solar energy heat collector of other patterns.
Know that by above the present invention is a hot water tri-generation system for solar air conditioner, can make full use of solar energy and air can, freeze efficiently and stably throughout the year, heat and produce health hot water, can guarantee very high comprehensive Energy Efficiency Ratio.Adopted the mode of Energy Efficiency Ratio very high voltage compression type refrigerating when freezing summer.Heat and heat production water is main product to utilize solar energy, hot water and accumulation of heat can be carried out simultaneously, heat with heat production water to be independent of each other, and not only energy utilization rate is very high, and have solved the heat pump temperature and heat not enough problem when low.Adopt the hot pipe solar heat collector, heat pump fluid separates with the water route, has avoided problems such as bombing, fouling, and bearing capacity is stronger, is easy to realize architecture-integral.Adopt heat exchange of heat pipe, heat exchange efficiency is improved, the Energy Efficiency Ratio of unit is improved, solved that heat exchanger is prone to leak, the problem of polluted water, and the big drawback of resistance when having overcome a plurality of heat exchangers series connection.The present invention has fully utilized renewable resources such as air ability, solar energy; Not only can solve traditional air-conditioning, hot water machine function singleness, efficiency of energy utilization and shortcoming such as fully excavated; Can also solve the low problem of general solar airconditioning energy utilization rate, have effects such as efficient, energy-conservation, safe, reliable, environmentally friendly.
Description of drawings
Fig. 1 is the system architecture sketch map of an embodiment of the present invention.
In the drawings:
1-compressor, 2-the first four-way change-over valve, 3-the second four-way change-over valve,
4-hot water heat exchanger, 5-the first three-way diverter valve, 6-air heat exchanger,
7-the first expansion valve, 8-the first check valve, 9-the second expansion valve,
10-air-condition heat exchanger, 11-water pump, 12-regenerative apparatus,
13-the second three-way diverter valve, 14-the second check valve, 15-attemperater,
16-solar thermal collector.
The specific embodiment
As shown in Figure 1; Hot water tri-generation system for solar air conditioner of the present invention comprises compressor 1, hot water heat exchanger 4, air heat exchanger 6, air-condition heat exchanger 10, regenerative apparatus 12, attemperater 15, solar thermal collector 16; Its design feature is; The working medium suction inlet of said compressor 1 connects with the D port of first four-way change-over valve 2; The sender property outlet of this compressor 1 connects with the A port of second four-way change-over valve 3, and the B port of first four-way change-over valve 2 connects with the D port of second four-way change-over valve 3, and the B port of second four-way change-over valve 3 connects with a working medium port of hot water heat exchanger 4; Connecting of hot water heat exchanger 4 according to another the A port of a working medium port with first three-way diverter valve 5; The C port of second four-way change-over valve 3 connects with the C port of first three-way diverter valve 5, and the C port of first four-way change-over valve 2 connects with a working medium port of air heat exchanger 6, and the A port of this first four-way change-over valve 2 connects with a working medium port of air-condition heat exchanger 10; Another working medium port of air heat exchanger 6 through parallel connection first expansion valve 7 of first check valve 8 connect with the B port of first three-way diverter valve 5, another working medium port of air-condition heat exchanger 10 through parallel connection second expansion valve 9 of second check valve 14 connect with the B port of first three-way diverter valve 5; Air-condition heat exchanger 10 water sides connect with the A port of second three-way diverter valve 13, the B port of this second three-way diverter valve 13 and a pair of water-in and water-out port corresponding be connected of C port with regenerative apparatus 12; Another of this regenerative apparatus 12 is to go out, intake port corresponding connect of water-in and water-out port with solar thermal collector 16; The a pair of water-in and water-out port of hot water heat exchange 4 with attemperater 15 a pair of go out, water inlet end is corresponding connects, another of attemperater 15 to into and out of water end (W.E.) with the going out of solar thermal collector 16, water inlet end is corresponding connects.
Said hot water heat exchanger (4), air heat exchanger (6), air-condition heat exchanger (10) adopt high-efficiency heat pipe heat exchanger (can select existing procucts for use), also can adopt other various suitable heat exchangers of prior art.

Claims (2)

1. hot water tri-generation system for solar air conditioner; Comprise compressor (1), hot water heat exchanger (4), air heat exchanger (6), air-condition heat exchanger (10), regenerative apparatus (12), attemperater (15), solar thermal collector (16); It is characterized in that; The working medium suction inlet of said compressor (1) connects with the D port of first four-way change-over valve (2); The sender property outlet of this compressor (1) connects with the A port of second four-way change-over valve (3); The B port of first four-way change-over valve (2) connects with the D port of second four-way change-over valve (3); A working medium port of the same hot water heat exchanger of B port (4) of second four-way change-over valve (3) connects, and another working medium port of hot water heat exchanger (4) connects with the A port of first three-way diverter valve (5), and the C port of second four-way change-over valve (3) connects with the C port of first three-way diverter valve (5); A working medium port of the same air heat exchanger of C port (6) of first four-way change-over valve (2) connects, and a working medium port of the same air-condition heat exchanger of A port (10) of this first four-way change-over valve (2) connects; Another working medium port of air heat exchanger (6) through parallel connection first expansion valve (7) of first check valve (8) connect with the B port of first three-way diverter valve (5), another working medium port of air-condition heat exchanger (10) through parallel connection second expansion valve (9) of second check valve (14) connect with the B port of first three-way diverter valve (5); Air-condition heat exchanger (10) water side connects with the A port of second three-way diverter valve (13), and a pair of water-in and water-out port of the B port of this second three-way diverter valve (13) and the same regenerative apparatus of C port (12) is corresponding to be connected; Another of this regenerative apparatus (12) is to corresponding connection of the port that goes out, intakes of the same solar thermal collector of water-in and water-out port (16); The same attemperater of a pair of water-in and water-out port (15) of hot water heat exchanger (4) a pair of goes out, water inlet end is corresponding connects, another of attemperater (15) to into and out of the going out of the same solar thermal collector of water end (W.E.) (16), water inlet end is corresponding connects.
2. according to the said hot water tri-generation system for solar air conditioner of claim 1, it is characterized in that said hot water heat exchanger (4), air heat exchanger (6), air-condition heat exchanger (10) adopt the high-efficiency heat pipe heat exchanger.
CN2010101333441A 2010-03-26 2010-03-26 High-efficiency hot water tri-generation system for solar air conditioner Active CN101806515B (en)

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Publication number Priority date Publication date Assignee Title
CN102563960B (en) * 2010-12-20 2015-11-25 新奥科技发展有限公司 Solar cold thermoelectricity combined supply system
CN103196176B (en) * 2013-04-22 2015-08-05 重庆大学 Solar auxiliary air source heat pump many house types hot-water supply system
CN103307714A (en) * 2013-06-20 2013-09-18 长沙理工大学 Domestic water heater utilizing air-conditioning condensation heat and solar energy
CN111609578A (en) * 2020-06-08 2020-09-01 上海交通大学 Small-sized multi-mode solar-assisted household air conditioning system

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JP5240531B2 (en) * 2011-10-17 2013-07-17 株式会社リコー toner

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CN1796896A (en) * 2004-12-29 2006-07-05 董永刚 Multifunctional cooling / warming conditionner and hot water device
CN101403539A (en) * 2008-08-01 2009-04-08 广东美的电器股份有限公司 Water heating units of solar energy and air source heat pump combined air conditioner
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