CN104596102A - Complementary energy recovery system and complementary energy recovery method based on heat pump technology - Google Patents
Complementary energy recovery system and complementary energy recovery method based on heat pump technology Download PDFInfo
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- CN104596102A CN104596102A CN201510013555.4A CN201510013555A CN104596102A CN 104596102 A CN104596102 A CN 104596102A CN 201510013555 A CN201510013555 A CN 201510013555A CN 104596102 A CN104596102 A CN 104596102A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
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Abstract
The invention discloses a complementary energy recovery system based on a heat pump technology. The complementary energy recovery system comprises a compressor, a first heat exchanger, a throttling element, a second heat exchanger and a fan, and the complementary energy recovery system also comprises a complementary energy recovery device, wherein the outlet end of the compressor, the first heat exchanger, the complementary energy recovery device, the throttling element, the second heat exchanger and the inlet end of the compressor are connected in sequence, and the second heat exchanger is installed at the air outlet side of the fan; the complementary energy recovery device is arranged between the second heat exchanger and the air outlet side of the fan, so that the working pressure of the hot side of the system can be effectively reduced; the complementary energy recovery device is installed between the second heat exchanger and the air outlet side of the fan, so that the heat radiated by the complementary energy recovery device can be absorbed by the second heat exchanger, the heat absorption efficiency of the second heat exchanger can be improved, and the problem of the frosting in a low temperature environment when the system is used for heating the heat pump can be fundamentally solved.
Description
Technical field
The present invention relates to the complementary energy recovery technology field based on heat pump techniques, particularly based on complementary energy recovery system and the complementary energy recovery method thereof of heat pump techniques.
Background technology
Refer to Fig. 1, the refrigerant circulation circuit that existing ordinary hot pumping system generally comprises blower fan 130 and is made up of compressor Q, cross valve U, condenser 110, expansion valve K and evaporimeter 120.When heat pump works, compressing refrigerant gas in evaporimeter 120 is become the steam of HTHP by compressor Q, steam cooled water cooling in condenser of this HTHP condenses into highly pressurised liquid, and in this process, cooling water obtains the heat of the steam of HTHP; Described highly pressurised liquid becomes the refrigerant of low-temp low-pressure again through expansion valve K throttling, refrigerant, under the effect of compressor Q, becomes cold media gas through evaporator 120, completes a kind of refrigeration cycle thus.
When refrigerant in evaporimeter 120 becomes gaseous state from liquid state, absorb heat from the external world, blower fan 130, for increasing the cross-ventilation of evaporimeter 120, improves evaporimeter 120 absorbs heat efficiency from the external world.In heat pump, utilize evaporimeter 120 and ambient atmos to carry out heat exchange, draw heat from ambient atmos in evaporimeter 120, exchanged in condenser 110 to outside water system by the heat drawn, the water of outside water system is heated.
The Teat pump boiler comprising above-mentioned heat pump normally supplies the hot water of 55 DEG C, and the air outlet temperature of compressor Q reaches about 40 DEG C Shi Keda 90 to 100 DEG C in water temperature, if heat exchange hot water temperature is too high, more than 55 DEG C, the pressure of condenser 110 side too highly will cause compressor Q cisco unity malfunction, affects the service life of compressor Q.Its most fatal shortcoming is, at low ambient temperatures, and can frosting on an evaporator during system works, thus cause system cisco unity malfunction.The mode of the mode of defrost can only be taked to solve.
Therefore, existing Teat pump boiler need improvement and bring new ideas.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art part, the object of the present invention is to provide a kind of complementary energy recovery system based on heat pump techniques and complementary energy recovery method thereof, by reducing the temperature of the first heat exchanger outlet end, the heat of the first heat exchanger outlet end is passed to the second heat exchanger, reach the operating pressure reducing compressor, the object improving the second heat exchanger heat absorption capacity, waste heat in first heat exchanger is reclaimed simultaneously, also remaining cold energy can be reclaimed at refrigerating state, reach reduction rejection temperature, have good help to attenuating room temperature effect.
In order to achieve the above object, this invention takes following technical scheme:
A kind of complementary energy recovery system based on heat pump techniques, comprise compressor, the first heat exchanger, restricting element, the second heat exchanger and blower fan, described complementary energy recovery system also comprises complementary energy recovery device, the entrance point of the port of export of described compressor, the first heat exchanger, complementary energy recovery device, restricting element, the second heat exchanger, compressor connects successively, and described second heat exchanger is installed in the air side of blower fan; Described complementary energy recovery device is installed between the second heat exchanger and the air side of blower fan.
The described complementary energy recovery system based on heat pump techniques, also comprise cross valve, the first end of described cross valve connects the port of export of compressor, second end of described cross valve connects the arrival end of the first heat exchanger, the port of export of three-terminal link second heat exchanger of described cross valve, the 4th end of described cross valve connects the arrival end of compressor.
The described complementary energy recovery system based on heat pump techniques, also comprises anti-icing equipment, between the port of export that described anti-icing equipment is serially connected in the first heat exchanger and complementary energy recovery device.
Described based in the complementary energy recovery system of heat pump techniques, described first heat exchanger is condenser, the first end of described condenser is the arrival end of the first heat exchanger, the second end of connection cross valve, second end of described condenser is the port of export of the first heat exchanger, one end of connection anti-icing equipment, 3rd end of described condenser is the entrance point of cold water, and the 4th end of described condenser is the port of export of hot water.
Described based in the complementary energy recovery system of heat pump techniques, described second heat exchanger is evaporimeter.
Described based in the complementary energy recovery system of heat pump techniques, described first heat exchanger is evaporimeter, the first end of described evaporimeter is the arrival end of the first heat exchanger, the second end of connection cross valve, second end of described evaporimeter is the port of export of the first heat exchanger, one end of connection anti-icing equipment, 3rd end of described evaporimeter is the entrance point of hot water, and the 4th end of described evaporimeter is the port of export of cold water.
Described based in the complementary energy recovery system of heat pump techniques, described second heat exchanger is condenser.
Described based in the complementary energy recovery system of heat pump techniques, described restricting element is expansion valve.
Described based in the complementary energy recovery system of heat pump techniques, described complementary energy recovery device is radiator.
A complementary energy recovery method for above-mentioned complementary energy recovery system, when complementary energy recovery system is used for heating, described complementary energy recovery method comprises:
Gaseous coolant in second heat exchanger is compressed into the steam of HTHP by compressor, and is input in the first heat exchanger by the steam of this HTHP; The steam of this HTHP is condensed into highly pressurised liquid in the first heat exchanger;
Described highly pressurised liquid, through complementary energy recovery device radiating and cooling, makes system hot side temperature reduce, and promotes that the vapor liquid of HTHP changes into highly pressurised liquid;
Highly pressurised liquid through complementary energy recovery device cooling flows through fluid element, is become the liquid refrigerants of low-temp low-pressure by restricting element throttling; Described liquid refrigerants, under the effect of compressor, flashes to gaseous coolant, and enters into compressor in the second heat exchanger;
Thus, complete a kind of refrigeration cycle, in this kind of refrigeration cycle, the refrigerant in the second heat exchanger becomes gaseous state from liquid state, and the second heat exchanger absorbs heat from air; Refrigerant in first heat exchanger becomes liquid release heat from gaseous state, and the cool water heating in outside water system is become hot water.
Compared to prior art, complementary energy recovery system based on heat pump techniques provided by the invention and complementary energy recovery system thereof, by the complementary energy recovery device be connected in series between the first heat exchanger and restricting element, the complementary energy of the first heat exchanger outlet end is made to carry out complementary energy recovery by the second heat exchanger, thus reduce the operating pressure of compressor, make compressor operating in normally-pressured neighbor; By described complementary energy recovery device is installed between the second heat exchanger and the air side of blower fan, effectively heat too much for the first heat exchanger outlet end is passed to the second heat exchanger, improve the heat absorption efficiency of the second heat exchanger, and serve when heating can not the effect of frosting.
Accompanying drawing explanation
Fig. 1 is the system diagram of the heat pump of prior art.
Fig. 2 is the system diagram of the complementary energy recovery system based on heat pump techniques provided by the invention.
Detailed description of the invention
The invention provides a kind of complementary energy recovery system based on heat pump techniques, by being connected in series complementary energy recovery device between the first heat exchanger and restricting element, and complementary energy recovery device is installed between the second heat exchanger and the air side of blower fan, the temperature of the hot side of the system that reduces, reduce the operating pressure of compressor, and reclaimed the waste heat of the first heat exchanger, improve the heat absorption efficiency of the second heat exchanger.
For making object of the present invention, technical scheme and effect clearly, clearly, developing simultaneously referring to accompanying drawing, the present invention is described in more detail for embodiment.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Refer to Fig. 2, complementary energy recovery system based on heat pump techniques provided by the invention, comprise compressor Q1, the first heat exchanger 210, restricting element 220, second heat exchanger 230, blower fan 240 and complementary energy recovery device 250, the port of export of described compressor Q1, the first heat exchanger 210, complementary energy recovery device 250, restricting element 220, second heat exchanger 230 are connected successively with the entrance point of compressor Q1, form loop, described second heat exchanger 230 is installed in the air side of blower fan 240; Described complementary energy recovery device 250 is installed between the second heat exchanger 230 and the air side of blower fan 240.The waste heat of recovery or remaining cold energy for reclaiming waste heat in the first heat exchanger 210 or remaining cold energy, and are passed to the second heat exchanger 230 by described complementary energy recovery device 250.Preferably, described complementary energy recovery device 250 is radiator.
During the described work of the complementary energy recovery system based on heat pump techniques, there are two kinds of mode of operations: heating mode and refrigeration mode.When described first heat exchanger 210 heat release, the second heat exchanger 230 are absorbed heat, described complementary energy recovery system is operated in heating mode; And described first heat exchanger 210 absorbs heat, the second heat exchanger 230 heat release time, described complementary energy recovery system is operated in refrigeration mode.Operate to example in a heating mode with described complementary energy recovery system, the gaseous coolant in the second heat exchanger 230 is compressed into the steam of HTHP by compressor Q1, and is input to by the steam of this HTHP in the first heat exchanger 210; The steam of this HTHP is condensed into highly pressurised liquid in the first heat exchanger 210; Described highly pressurised liquid, through complementary energy recovery device 250 radiating and cooling, makes system hot side temperature reduce, and promotes that the vapor liquid of HTHP changes into highly pressurised liquid, reduces the operating pressure of compressor Q1; The highly pressurised liquid of lowering the temperature through complementary energy recovery device 250 flows through fluid element 220, is become the liquid refrigerants of low-temp low-pressure by restricting element 220 throttling; Described liquid refrigerants, under the effect of compressor Q1, flashes to gaseous coolant, and enters into compressor Q1 in the second heat exchanger 230; Thus, complete a kind of refrigeration cycle, in this kind of refrigeration cycle, the refrigerant in the second heat exchanger 230 becomes gaseous state from liquid state, and the second heat exchanger 230 absorbs heat from air; Refrigerant in first heat exchanger 210 becomes liquid state from gaseous state, release heat, and the cool water heating in outside water system is become hot water.By the acting of compressor Q1, second heat exchanger 230 absorbs heat endlessly from air and in complementary energy recovery device 250, the heat absorbed discharges in coolant transmission to the first heat exchanger 210, constantly outside water system is heated, because complementary energy recovery device 250 has enough waste heat supply temperatures when heating, when working at low ambient temperatures, second heat exchanger 230 is in higher heat absorption environment, can not frosting under the waste heat effect that complementary energy recovery device 250 sends, improve the efficiency of system.Under refrigeration mode described first heat exchanger 210 absorb heat, the second heat exchanger 230 heat release, concrete operation principle and heating mode similar, just the direction of refrigerant circulation flowing is contrary, does not repeat them here.
Please continue to refer to Fig. 2, complementary energy recovery system based on heat pump techniques provided by the invention, also comprise cross valve U1, the first end 1 of described cross valve U1 connects the port of export of compressor Q1, second end 2 of described cross valve U1 connects the arrival end of the first heat exchanger 210,3rd end 3 of described cross valve U1 connects the port of export of the second heat exchanger 230, and the 4th end 4 of described cross valve U1 connects the arrival end of compressor Q1.
When first end 1 and second end 2 conducting of cross valve U1, when the 3rd end 3 and the 4th end 4 conducting (not conducting between first end, the second end and the 3rd end, the 4th end), the described complementary energy recovery system based on heat pump techniques enters heating mode: refrigerant is evaporation endothermic in the second heat exchanger 230, condensation heat release in the first heat exchanger 210.When first end 1 and the 3rd end 3 conducting of cross valve U1, (first end when the second end 2 and the 4th end 4 conducting, 3rd end and the second end, not conducting between 4th end), the described complementary energy recovery system based on heat pump techniques enters refrigeration mode: refrigerant condensation heat release in the second heat exchanger 230, evaporation endothermic in the first heat exchanger 210, because complementary energy recovery device 250 has reclaimed the first heat exchanger more than 210 cold energy, temperature around complementary energy recovery device 250 is reduced, low temperature can effectively help the second heat exchanger 230 to dispel the heat, the condensation efficiency of the second heat exchanger 230 is improved from face.And, by the selective conducting of described cross valve U1, complementary energy recovery system can be made to realize refrigeration and heat, improve the practicality of complementary energy recovery system.
Please continue to refer to Fig. 2, the complementary energy recovery system based on heat pump techniques provided by the invention, also comprises anti-icing equipment 260, and described anti-icing equipment 260 is serially connected between the first heat exchanger 210 and complementary energy recovery device 250.Described anti-icing equipment 260 is mainly used in preventing from freezing bottom cabinet.Preferably, described anti-icing equipment 260 is frost removal.
Further, in the present embodiment, described first heat exchanger 210 is condenser, the first end 5 of described condenser is the arrival end of the first heat exchanger 210, second end 2 of connection cross valve U1, second end 6 of described condenser is the port of export of the first heat exchanger 210, one end of connection anti-icing equipment 260,3rd end 7 of described condenser is the entrance point of cold water, and the 4th end 8 of described condenser is the port of export of hot water.In fact described condenser is exactly a heat exchanger, the steam refrigerant of HTHP flows into from the first end 5 of condenser, flow out from the second end 6 of condenser, the cold water of outside water system flows into from the 3rd end 7 of condenser, flow out from the 4th end 8 of condenser, the steam refrigerant of HTHP and the cold water of outside water system carry out heat exchange, finally make the steam refrigerant condensation of HTHP, make the cold water heating of outside water system.Certainly, described first heat exchanger 210 can also be other forms of heat exchanger, as long as realize refrigerant condensation, refrigerant and cold water heat exchange.
Described second heat exchanger 230 is evaporimeter, and described evaporimeter is used for refrigerant evaporation is absorbed heat, from complementary energy recovery device 250 and outside air, absorb heat, and this evaporimeter can use indoor apparatus of air conditioner or other refrigerating plants instead.
In another embodiment, described first heat exchanger 210 is evaporimeter, the first end 5 of described evaporimeter is the arrival end of the first heat exchanger 210, second end 2 of connection cross valve U1, second end 6 of described evaporimeter is the port of export of the first heat exchanger 210, one end of connection anti-icing equipment 260,3rd end 7 of described evaporimeter is the entrance point of cold water, and the 4th end 8 of described evaporimeter is the port of export of hot water.In fact described evaporimeter is exactly a heat exchanger, the liquid refrigerants of low-temp low-pressure flows into from the second end 6 of evaporimeter, flow out from the first end 5 of evaporimeter, the hot water of outside water system flows into from the 4th end 8 of evaporimeter, flow out from the 3rd end 7 of evaporimeter, the liquid refrigerants of low-temp low-pressure and the hot water of outside water system carry out heat exchange, finally make the liquid refrigerants of low-temp low-pressure evaporate, the hot water of outside water system is cooled off.Certainly, described first heat exchanger 210 can also be other forms of heat exchanger, as long as realize refrigerant evaporation, refrigerant and hot water heat exchange.
Further, in another embodiment described, described second heat exchanger 230 is condenser, and described condenser is used for making refrigerant condensation heat release, distributes heat in outside air.
Please continue to refer to Fig. 2, described restricting element 220 is expansion valve K1, and described expansion valve K1 is mainly used in the pressure reducing refrigerant, and refrigerant is more easily evaporated.Certainly, described restricting element 220 can also be choke valve, as long as can realize step-down throttling, the present invention does not limit.
The present invention is the corresponding complementary energy recovery method providing a kind of complementary energy recovery system based on heat pump techniques also, and when complementary energy recovery system is used for heating, described complementary energy recovery method comprises:
Gaseous coolant in second heat exchanger is compressed into the steam of HTHP by compressor, and is input in the first heat exchanger by the steam of this HTHP; The steam of this HTHP is condensed into highly pressurised liquid in the first heat exchanger;
Described highly pressurised liquid, through complementary energy recovery device radiating and cooling, makes system hot side temperature reduce, and promotes that the vapor liquid of HTHP changes into highly pressurised liquid;
Highly pressurised liquid through complementary energy recovery device cooling flows through fluid element, is become the liquid refrigerants of low-temp low-pressure by restricting element throttling; Described liquid refrigerants, under the effect of compressor, flashes to gaseous coolant, and enters into compressor in the second heat exchanger;
Thus, complete a kind of refrigeration cycle, in this kind of refrigeration cycle, the refrigerant in the second heat exchanger becomes gaseous state from liquid state, and the second heat exchanger absorbs heat from air; Refrigerant in first heat exchanger becomes liquid release heat from gaseous state, and the cool water heating in outside water system is become hot water.Specifically refer to the corresponding embodiment of above-mentioned complementary energy recovery system.
Complementary energy recovery system based on heat pump techniques provided by the invention, dispelled the heat by the waste heat of the refrigerant to the first heat exchanger outlet end, reach the object of the operating pressure reducing compressor, be conducive to the service life extending compressor, reduce the temperature before the refrigerant phase transformation in the second heat exchanger simultaneously, effectively raise the heat absorption capacity after refrigerant phase transformation, utilize waste heat to be refrigerant heat supply in the second heat exchanger, improve the heat absorption efficiency of the second heat exchanger.
Be understandable that, for those of ordinary skills, can be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, and all these change or replace the protection domain that all should belong to the claim appended by the present invention.
Claims (10)
1. the complementary energy recovery system based on heat pump techniques, comprise compressor, the first heat exchanger, restricting element, the second heat exchanger and blower fan, it is characterized in that, described complementary energy recovery system also comprises complementary energy recovery device, the entrance point of the port of export of described compressor, the first heat exchanger, complementary energy recovery device, restricting element, the second heat exchanger, compressor connects successively, and described second heat exchanger is installed in the air side of blower fan; Described complementary energy recovery device is installed between the second heat exchanger and the air side of blower fan.
2. the complementary energy recovery system based on heat pump techniques according to claim 1, it is characterized in that, also comprise cross valve, the first end of described cross valve connects the port of export of compressor, second end of described cross valve connects the arrival end of the first heat exchanger, the port of export of three-terminal link second heat exchanger of described cross valve, the 4th end of described cross valve connects the arrival end of compressor.
3. the complementary energy recovery system based on heat pump techniques according to claim 2, is characterized in that, also comprise anti-icing equipment, between the port of export that described anti-icing equipment is serially connected in the first heat exchanger and complementary energy recovery device.
4. the complementary energy recovery system based on heat pump techniques according to claim 3, it is characterized in that, described first heat exchanger is condenser, the first end of described condenser is the arrival end of the first heat exchanger, the second end of connection cross valve, second end of described condenser is the port of export of the first heat exchanger, one end of connection anti-icing equipment, 3rd end of described condenser is the entrance point of cold water, and the 4th end of described condenser is the port of export of hot water.
5. the complementary energy recovery system based on heat pump techniques according to claim 1-4 any one, is characterized in that, described second heat exchanger is evaporimeter.
6. the complementary energy recovery system based on heat pump techniques according to claim 3, it is characterized in that, described first heat exchanger is evaporimeter, the first end of described evaporimeter is the arrival end of the first heat exchanger, the second end of connection cross valve, second end of described evaporimeter is the port of export of the first heat exchanger, one end of connection anti-icing equipment, 3rd end of described evaporimeter is the entrance point of hot water, and the 4th end of described evaporimeter is the port of export of cold water.
7. the complementary energy recovery system based on heat pump techniques according to claim 6, is characterized in that, described second heat exchanger is condenser.
8. the complementary energy recovery system based on heat pump techniques according to claim 1, is characterized in that, described restricting element is expansion valve.
9. the complementary energy recovery system based on heat pump techniques according to claim 1, is characterized in that, described complementary energy recovery device is radiator.
10. a complementary energy recovery method for complementary energy recovery system as claimed in claim 1, is characterized in that, when complementary energy recovery system is used for heating, described complementary energy recovery method comprises:
Gaseous coolant in second heat exchanger is compressed into the steam of HTHP by compressor, and is input in the first heat exchanger by the steam of this HTHP; The steam of this HTHP is condensed into highly pressurised liquid in the first heat exchanger;
Described highly pressurised liquid, through complementary energy recovery device radiating and cooling, makes system hot side temperature reduce, and promotes that the vapor liquid of HTHP changes into highly pressurised liquid;
Highly pressurised liquid through complementary energy recovery device cooling flows through fluid element, is become the liquid refrigerants of low-temp low-pressure by restricting element throttling; Described liquid refrigerants, under the effect of compressor, flashes to gaseous coolant, and enters into compressor in the second heat exchanger;
Thus, complete a kind of refrigeration cycle, in this kind of refrigeration cycle, the refrigerant in the second heat exchanger becomes gaseous state from liquid state, and the second heat exchanger absorbs heat from air; Refrigerant in first heat exchanger becomes liquid release heat from gaseous state, and the cool water heating in outside water system is become hot water.
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| CN107152734A (en) * | 2017-07-06 | 2017-09-12 | 珠海格力电器股份有限公司 | Heat exchanger, heat pump air conditioner and control method |
| CN113483418A (en) * | 2021-04-25 | 2021-10-08 | 安徽嘉乐斯乐净化工程有限公司 | Air conditioning unit capable of recycling cold and heat and control method thereof |
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| CN113483418A (en) * | 2021-04-25 | 2021-10-08 | 安徽嘉乐斯乐净化工程有限公司 | Air conditioning unit capable of recycling cold and heat and control method thereof |
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