CN115388537A - Energy centralized recovery system of evaporative condensation heat pump with dispersed exhaust source - Google Patents
Energy centralized recovery system of evaporative condensation heat pump with dispersed exhaust source Download PDFInfo
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- CN115388537A CN115388537A CN202211047197.5A CN202211047197A CN115388537A CN 115388537 A CN115388537 A CN 115388537A CN 202211047197 A CN202211047197 A CN 202211047197A CN 115388537 A CN115388537 A CN 115388537A
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- port
- heat exchanger
- way reversing
- reversing valve
- recovery
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- 238000011084 recovery Methods 0.000 title claims abstract description 48
- 238000009833 condensation Methods 0.000 title claims abstract description 15
- 230000005494 condensation Effects 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 238000004378 air conditioning Methods 0.000 claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 238000001704 evaporation Methods 0.000 claims abstract description 5
- 230000008020 evaporation Effects 0.000 claims abstract description 5
- 239000012141 concentrate Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000003507 refrigerant Substances 0.000 description 12
- 239000007788 liquid Substances 0.000 description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Images
Classifications
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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
- F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
- F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
- F24F12/002—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using an intermediate heat-transfer fluid
- F24F12/003—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using an intermediate heat-transfer fluid using a heat pump
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
The invention discloses a distributed exhaust source evaporation and condensation heat pump energy centralized recovery system, which comprises a plurality of exhaust recovery units and heat pump units, wherein the exhaust recovery units are embedded at the air inlet positions of exhaust fans and comprise first heat exchangers for recovering energy in exhaust; the heat pump unit comprises a compressor, a four-way reversing valve and a plate type heat exchanger, wherein the gas outlet of the compressor is connected with a first port of the four-way reversing valve, the gas inlet of the compressor is connected with a second port of the four-way reversing valve, a third port of the four-way reversing valve is connected with one end of the first heat exchanger in series through a first transmission pipeline, the other end of the first heat exchanger is sequentially connected with a first expansion valve in series through a second transmission pipeline, a port on one side of the plate type heat exchanger is connected behind the electronic expansion valve, the other port on the side of the electronic expansion valve is connected into a fourth port of the four-way reversing valve, and the other side of the plate type heat exchanger is connected with a central air conditioning water system in series.
Description
Technical Field
The invention relates to a cold/heat recovery system, in particular to an energy centralized recovery system of an evaporative condensation heat pump of a dispersed exhaust source.
Background
China established the development goal of achieving carbon peak by 2030 and carbon neutralization by 2060. The core to achieve the dual carbon goal is energy conservation. In order to ensure the quality of air in a building, a fresh air exhaust system and an air exhaust system are generally arranged, in the refrigerating and heating seasons, fresh air at outdoor environment temperature needs to be refrigerated and heated, and when air is treated, electric power or other energy sources need to be consumed. Simultaneously the cooperation new trend system need set up exhaust system (the amount of wind is balanced), need be outdoor with indoor air discharge, and this partial air temperature is indoor ambient temperature, has certain energy, if can retrieve it, just can reduce the building energy consumption, and the new volume of airing exhaust of building is big more moreover, and it is better to retrieve the effect, and the heat recovery system of airing exhaust who now commonly uses has:
1 total heat recovery: (1) rotating wheel, (2) plate type, etc., and (3) solution.
2, sensible heat recovery: (1) ethylene glycol and (2) a heat pipe.
The device and the equipment are commonly used in a fresh air system, one air exhaust system is corresponding, the system design and the air pipe arrangement have certain requirements and difficulties, and the application scene is not very wide.
In addition, the energy recovered by the conventional recovery system is low-level energy (low temperature) and cannot be directly used in the central air-conditioning water system of the building, so that a recovery system is needed to raise the temperature of the recovered energy and then concentrate and use the raised energy in the central air-conditioning water system.
Disclosure of Invention
The invention aims to overcome the defects in the background art and provide an energy centralized recovery system of an evaporation condensation heat pump of a dispersed exhaust source.
In order to achieve the purpose, the invention provides the following technical scheme: a distributed exhaust source evaporation and condensation heat pump energy centralized recovery system comprises a plurality of exhaust recovery units and heat pump units, wherein the exhaust recovery units are embedded at the air inlet positions of exhaust fans and comprise first heat exchangers for recovering energy in exhaust; the heat pump unit comprises a compressor, a four-way reversing valve and a plate type heat exchanger, wherein the gas outlet of the compressor is connected with a first port of the four-way reversing valve, the gas inlet of the compressor is connected with a second port of the four-way reversing valve, a third port of the four-way reversing valve is connected with one end of the first heat exchanger in series through a first transmission pipeline, the other end of the first heat exchanger is sequentially connected with a first expansion valve in series through a second transmission pipeline, a port on one side of the plate type heat exchanger is connected behind the electronic expansion valve, the other port on the side of the electronic expansion valve is connected into a fourth port of the four-way reversing valve, and the other side of the plate type heat exchanger is connected with a central air conditioning water system in series.
Preferably, a first dry filter is arranged between the first expansion valve and the electronic expansion valve, and a second dry filter is arranged between the compressor and the first heat exchanger.
Preferably, the central air-conditioning water system comprises a heat pipe network heat exchanger, a hot water unit, a refrigerating unit and a circulating water pump network.
Preferably, the plate heat exchanger may be replaced by a shell and tube heat exchanger.
Preferably, the system comprises a winter heat recovery and reuse system and a summer cold recovery and reuse system.
Preferably, in the winter heat recovery system, the first port of the four-way reversing valve is communicated with the third port, and the second port of the four-way reversing valve is communicated with the fourth port.
Preferably, in the summer cold recovery system, the first port and the fourth port of the four-way reversing valve are communicated, and the second port and the third port are communicated.
Compared with the prior art, the system for recovering the energy of the evaporative condensation heat pump with the dispersed exhaust source has the following beneficial effects: the energy in the dispersed indoor exhaust air is recycled and used in a central air-conditioning water system of the building by utilizing the multi-connected heat pump technology, and compared with other heat recovery technologies, the application is more flexible, the energy recovery is more thorough, and the energy consumption of the whole air conditioner of the building can be greatly reduced.
Figure illustrates the drawings
FIG. 1 is an overall schematic diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of an exhaust recovery unit in an embodiment of the present invention;
fig. 3 is a schematic diagram of a heat pump unit according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention discloses a distributed exhaust source evaporation condensation heat pump energy centralized recovery system which is applied to a building air conditioning system, recovers energy in each exhaust air in a building, processes the air conditioning water system after the treatment through a heat pump system, effectively reduces energy consumption, and is characterized in that the system layout is shown as figure 1, and the system comprises a plurality of exhaust air recovery units 1, heat pump units 2 and a central air conditioning water system unit 3, wherein the exhaust air recovery units are embedded at air inlets of exhaust fans to recover the energy in the exhaust source, and the heat pump units are respectively connected with the exhaust air recovery units and the central air conditioning water system unit to further heat and raise the temperature of a fed refrigerant.
Specifically, the exhaust air recovery unit comprises a first heat exchanger 4 for recovering energy in exhaust air, a first expansion valve 5 and a first drying filter 6 which are sequentially connected with one end of the first heat exchanger, the first heat exchanger is used as an evaporator during recovery in winter and is used as a condenser during recovery in summer, and as exhaust fans in a building are distributed, a plurality of exhaust air recovery units are connected into a transmission pipeline in a parallel mode.
The heat pump unit comprises a compressor 7, a four-way reversing valve 8, an electronic expansion valve 9 and a plate heat exchanger 10, wherein a gas outlet of the compressor is connected with a first port of the four-way reversing valve, a gas inlet of the compressor is connected with a second port of the four-way reversing valve, a third port of the four-way reversing valve is connected with one end, which is not provided with the first expansion valve, of the first heat exchanger through a first transmission pipeline 11, one end, which is provided with the first expansion valve, of the first heat exchanger is connected with one port on one side of the plate heat exchanger after being connected with the electronic expansion valve in series through a second transmission pipeline 12, the other port on the side of the plate heat exchanger is connected with a fourth port of the four-way reversing valve, the other side of the plate heat exchanger is connected with a central air-conditioning water system unit, and a third drying filter 13 is arranged between the compressor and the first heat exchanger.
The central air conditioning water system comprises a heat distribution pipe network heat exchanger 14, a hot water unit 15, a refrigerating unit 16 and a circulating water pump network 17.
The system includes a winter heat recovery and reuse system and a summer cold recovery and reuse system.
In the winter heat recovery system, a first port of a four-way reversing valve is communicated with a third port, a second port is communicated with a fourth port, the indoor exhaust temperature is 20 ℃, a medium-temperature high-pressure liquid refrigerant from a plate heat exchanger passes through an electronic expansion valve and absorbs indoor exhaust heat in the first heat exchanger, the medium-temperature high-pressure liquid refrigerant is expanded and vaporized to be changed into a low-temperature low-pressure vapor refrigerant, the low-temperature low-pressure vapor refrigerant enters a compressor through a first transmission pipeline and is compressed into high-temperature high-pressure liquid, then the high-temperature high-pressure liquid refrigerant enters the plate heat exchanger, the heat is transferred to water on the other side of the plate heat exchanger, the medium-temperature high-pressure liquid refrigerant is cooled by system water and enters the first heat exchanger again, and next circulation starts.
In the summer cold recovery system, a first port of a four-way reversing valve is communicated with a fourth port, a second port is communicated with a third port, the indoor exhaust temperature is 26 ℃, high-temperature and high-pressure liquid refrigerant from a compressor absorbs indoor exhaust cold in a first heat exchanger through an electronic expansion valve, heat is released by vaporization to form medium-high temperature vapor refrigerant, the refrigerant enters an expansion valve for throttling and depressurization to form low-temperature and low-pressure liquid, the low-temperature and low-pressure liquid enters a plate heat exchanger for heat exchange with water on the other side, the refrigerant absorbs heat in the water and is vaporized to form low-temperature and low-pressure gas to enter a compressor, the refrigerant is compressed and boosted to form high-temperature and high-pressure liquid, and the high-temperature and high-pressure liquid enters the first heat exchanger to start next cycle.
In this system, winter utilizes the temperature of airing exhaust to be higher than ambient temperature, arranges first heat exchanger (condenser) in indoor exhaust system, summer utilizes indoor airing exhaust to be less than outdoor ambient temperature, arranges first heat exchanger (evaporimeter) in indoor exhaust system, and heat absorption (refrigeration) heat release (heating) under the indoor temperature environment can improve heat pump system operating efficiency by a wide margin under comparing outdoor ambient temperature to can concentrate the recovered energy to a plurality of exhaust system concurrent operation.
The terms "first," "second," and the like are used herein to define components, as one skilled in the art would know: the use of the words "first", "second", etc. is merely for convenience in describing the differences between the components. Unless otherwise stated, the above words have no special meaning.
Finally, it should be noted that: the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the technical solutions of the present invention, so long as the technical solutions can be realized on the basis of the above embodiments without creative efforts, which should be considered to fall within the protection scope of the patent of the present invention.
Claims (7)
1. The utility model provides a distributed exhaust source evaporation condensation heat pump energy concentrates recovery system which characterized in that: the system comprises a plurality of exhaust air recovery units and a heat pump unit, wherein the exhaust air recovery units are embedded at the air inlet positions of the exhaust fans and comprise first heat exchangers for recovering energy in exhaust air; the heat pump unit comprises a compressor, a four-way reversing valve and a plate type heat exchanger, wherein the gas outlet of the compressor is connected with a first port of the four-way reversing valve, the gas inlet of the compressor is connected with a second port of the four-way reversing valve, a third port of the four-way reversing valve is connected with one end of the first heat exchanger in series through a first transmission pipeline, the other end of the first heat exchanger is sequentially connected with a first expansion valve in series through a second transmission pipeline, a port on one side of the plate type heat exchanger is connected behind the electronic expansion valve, the other port on the side of the electronic expansion valve is connected into a fourth port of the four-way reversing valve, and the other side of the plate type heat exchanger is connected with a central air conditioning water system in series.
2. The evaporative condensation heat pump recovery system of claim 1, wherein: and a first dry filter is arranged between the first expansion valve and the electronic expansion valve, and a second dry filter is arranged between the compressor and the first heat exchanger.
3. The evaporative condensation heat pump recovery system of claim 1, wherein: the central air conditioning water system comprises a heating power pipe network heat exchanger, a hot water unit, a refrigerating unit and a circulating water pump network.
4. The system for concentrated recovery of energy from evaporative condensation heat pumps with distributed exhaust sources as claimed in claim 1, wherein: the plate heat exchanger can be replaced by a shell-and-tube heat exchanger.
5. The system for concentrated recovery of energy from evaporative condensation heat pumps with distributed exhaust sources as claimed in claim 1, wherein: the system includes a winter heat recovery and reuse system and a summer cold recovery and reuse system.
6. The evaporative condensation heat pump recovery system of claim 5, wherein: in the winter heat recovery system, a first port and a third port of a four-way reversing valve are communicated, and a second port and a fourth port of the four-way reversing valve are communicated.
7. The distributed bleed-source evaporative condensation heat pump recovery system of claim 5, wherein: in the summer cold recovery system, a first port and a fourth port of the four-way reversing valve are communicated, and a second port and a third port of the four-way reversing valve are communicated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211047197.5A CN115388537A (en) | 2022-08-30 | 2022-08-30 | Energy centralized recovery system of evaporative condensation heat pump with dispersed exhaust source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211047197.5A CN115388537A (en) | 2022-08-30 | 2022-08-30 | Energy centralized recovery system of evaporative condensation heat pump with dispersed exhaust source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115388537A true CN115388537A (en) | 2022-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211047197.5A Pending CN115388537A (en) | 2022-08-30 | 2022-08-30 | Energy centralized recovery system of evaporative condensation heat pump with dispersed exhaust source |
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| CN (1) | CN115388537A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63197831A (en) * | 1987-02-09 | 1988-08-16 | Chubu Electric Power Co Inc | Residential central supply/exhaust and exhaust heat recovery equipment |
| DE19807262A1 (en) * | 1997-02-20 | 1998-09-10 | Matthias Sickl | Energy recovery system for re-exhaust air from room in building |
| CN103925662A (en) * | 2014-04-01 | 2014-07-16 | 侴乔力 | Fresh air system driven by exhaust air source heat pump |
| CN108895577A (en) * | 2018-05-22 | 2018-11-27 | 北京艾尔绿能科技有限公司 | A kind of new wind devices of Air-source Heat Pump of waste heat recycling |
| CN211739367U (en) * | 2020-01-20 | 2020-10-23 | 江苏区宇能源有限公司 | Heat recovery device suitable for hospital ward is aired exhaust |
| CN218348829U (en) * | 2022-08-30 | 2023-01-20 | 南通华信中央空调有限公司 | Energy centralized recovery system for evaporative condensation heat pump with dispersed exhaust source |
-
2022
- 2022-08-30 CN CN202211047197.5A patent/CN115388537A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63197831A (en) * | 1987-02-09 | 1988-08-16 | Chubu Electric Power Co Inc | Residential central supply/exhaust and exhaust heat recovery equipment |
| DE19807262A1 (en) * | 1997-02-20 | 1998-09-10 | Matthias Sickl | Energy recovery system for re-exhaust air from room in building |
| CN103925662A (en) * | 2014-04-01 | 2014-07-16 | 侴乔力 | Fresh air system driven by exhaust air source heat pump |
| CN108895577A (en) * | 2018-05-22 | 2018-11-27 | 北京艾尔绿能科技有限公司 | A kind of new wind devices of Air-source Heat Pump of waste heat recycling |
| CN211739367U (en) * | 2020-01-20 | 2020-10-23 | 江苏区宇能源有限公司 | Heat recovery device suitable for hospital ward is aired exhaust |
| CN218348829U (en) * | 2022-08-30 | 2023-01-20 | 南通华信中央空调有限公司 | Energy centralized recovery system for evaporative condensation heat pump with dispersed exhaust source |
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| PB01 | Publication | ||
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Application publication date: 20221125 |