CN113915789A - High-efficient gas heat pump system - Google Patents
High-efficient gas heat pump system Download PDFInfo
- Publication number
- CN113915789A CN113915789A CN202111267051.7A CN202111267051A CN113915789A CN 113915789 A CN113915789 A CN 113915789A CN 202111267051 A CN202111267051 A CN 202111267051A CN 113915789 A CN113915789 A CN 113915789A
- Authority
- CN
- China
- Prior art keywords
- heat exchange
- exchange tube
- cooling water
- refrigerant
- tube group
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000498 cooling water Substances 0.000 claims abstract description 43
- 239000003507 refrigerant Substances 0.000 claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 abstract description 10
- 239000007789 gas Substances 0.000 description 21
- 230000000694 effects Effects 0.000 description 6
- 239000002918 waste heat Substances 0.000 description 6
- 238000001704 evaporation Methods 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 5
- 230000017525 heat dissipation Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
Images
Classifications
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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
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
- F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
-
- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- 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
- F25B2327/00—Refrigeration system using an engine for driving a compressor
- F25B2327/001—Refrigeration system using an engine for driving a compressor of the internal combustion type
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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]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
The invention relates to a high-efficiency gas heat pump system, which comprises a refrigerant circulating loop consisting of a compressor, a four-way valve, an outdoor heat exchanger and an indoor heat exchanger; the compressor is driven by a gas engine; the outdoor heat exchanger comprises a refrigerant heat exchange tube set and a cooling water heat exchange tube set; the refrigerant heat exchange tube group and the cooling water heat exchange tube group are both in a vertical row shape and are formed by connecting a plurality of heat exchange tubes in series; the refrigerant heat exchange tube group is connected to the refrigerant circulation circuit; the cooling water heat exchange tube set is communicated with a cooling water path of the gas engine; the end part of the heat exchange tube group is provided with an electromagnetic valve; the refrigerant heat exchange tube group and the cooling water heat exchange tube group are three or more in total and are arranged in parallel at intervals. The invention can adjust the heat exchange state of the refrigerant, the cooling water and the outdoor air by switching different heat exchange tube sets in the outdoor heat exchanger, greatly improves the efficiency of the gas heat pump in low-temperature heating operation, and fully meets the market demand.
Description
Technical Field
The invention relates to an air conditioning system, in particular to a gas heat pump system with higher efficiency, and specifically relates to a high-efficiency gas heat pump system.
Background
The gas heat pump drives the compressor to work through the gas engine, can save electric power, adapts to the current 'carbon peak reaching' and 'carbon neutralization' strategy, and therefore, the gas heat pump is widely popularized. Gas engines produce a large amount of "waste heat" when in operation. At present, the conventional gas heat pump still mainly exchanges heat between a refrigerant and air through a heat exchanger to realize condensation or evaporation, and the energy conversion requirement during refrigeration or heating is met. However, when heating is performed at a low ambient temperature, the efficiency of refrigerant evaporation is greatly reduced, and the heating effect is seriously affected. Meanwhile, waste heat generated by the engine is wasted, so that the utilization rate of energy is greatly reduced, and the energy-saving and environment-friendly effects are not facilitated.
Therefore, a gas heat pump system needs to be designed, which can fully utilize the waste heat generated by the engine to improve the evaporation efficiency of the refrigerant, improve the heating operation effect and better meet the market demand.
Disclosure of Invention
The invention aims to provide an efficient gas heat pump system aiming at the defects of the prior art, which can effectively improve the efficiency of the gas heat pump during low-temperature heating operation and better meet the market demand.
The technical scheme of the invention is as follows:
a high-efficiency gas heat pump system comprises a refrigerant circulating loop consisting of a compressor, a four-way valve, an outdoor heat exchanger and an indoor heat exchanger; the compressor is driven by a gas engine; the outdoor heat exchanger comprises a refrigerant heat exchange tube set and a cooling water heat exchange tube set; the refrigerant heat exchange tube group and the cooling water heat exchange tube group are both in a vertical row shape and are formed by connecting a plurality of heat exchange tubes in series; the refrigerant heat exchange tube group is connected to the refrigerant circulation circuit; the cooling water heat exchange tube set is communicated with a cooling water path of the gas engine to form a cooling water circulation loop; the end parts of the refrigerant heat exchange tube group and the cooling water heat exchange tube group are respectively provided with an electromagnetic valve which can control the opening and closing of the electromagnetic valves; the refrigerant heat exchange tube group and the cooling water heat exchange tube group are three or more in total and are arranged in parallel at intervals.
Furthermore, a fan is arranged on the outdoor heat exchanger.
Furthermore, a water pump is arranged on the cooling water circulation loop.
The invention has the beneficial effects that:
the invention has reasonable design and convenient control, and can adjust the heat exchange state of the refrigerant, the cooling water and the outdoor air by switching different heat exchange tube sets in the outdoor heat exchanger, thereby greatly improving the efficiency of the gas heat pump during low-temperature heating operation and fully meeting the market demand.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention.
Fig. 2 is a schematic structural view of an outdoor heat exchanger.
Wherein, 1-compressor; 2-a gas engine; 3-a four-way valve; 4-outdoor heat exchanger; 5, a fan; 6-indoor heat exchanger; 7-an electronic expansion valve; 8-a water pump; 9-electromagnetic valve I; 10-electromagnetic valve II; 11-solenoid valve III; 12-electromagnetic valve IV; the arrow is the air inlet direction of the outdoor heat exchanger.
Detailed Description
The invention is further described below with reference to the figures and examples.
As shown in fig. 1 and 2.
A high-efficiency gas heat pump system comprises a refrigerant circulation loop consisting of a compressor 1, a four-way valve 3, an outdoor heat exchanger 4 and an indoor heat exchanger 6. And an electronic expansion valve 7 is also arranged on the indoor heat exchanger 6.
The compressor 1 is driven by a gas engine 2. The gas engine 2 is cooled by cooling water.
The outdoor heat exchanger 4 includes two refrigerant heat exchange tube groups and two cooling water heat exchanger tube groups. The refrigerant heat exchange tube group and the cooling water heat exchanger tube group can have the same structure, are in vertical rows and are arranged in parallel at intervals, namely, from the air inlet direction, the first heat exchange tube group and the third heat exchange tube group are the refrigerant heat exchange tube group, and the second heat exchange tube group and the fourth heat exchange tube group are the cooling water heat exchange tube group. The inlet ends of the first heat exchange pipe group to the fourth heat exchange pipe group are respectively provided with a solenoid valve I9, a solenoid valve II10, a solenoid valve III11 and a solenoid valve IV12, and the opening and closing of the heat exchange pipe groups can be respectively controlled.
And two rows of the refrigerant heat exchange tube groups are connected in parallel and then connected into a refrigerant circulation loop to participate in refrigerant circulation. And the two rows of cooling water heat exchanger tube groups are connected in parallel and then communicated with a cooling water channel of the gas engine through a pipeline to form a cooling water circulation loop.
And a water pump 8 is also arranged on the cooling water circulation loop, so that the flow of cooling water can be promoted.
The outdoor heat exchanger is also provided with a fan 5 which can ensure the air flow direction and promote the air flow.
The operation process of the invention is as follows:
during refrigerating operation, the electromagnetic valve I, the electromagnetic valve II and the electromagnetic valve IV are opened, the electromagnetic valve III is closed, and the refrigerant flows through the first heat exchange tube set for condensation and heat dissipation. Meanwhile, cooling water flows through the second row of heat exchange tube group and the fourth row of heat exchange tube group for heat dissipation. Because the air exchanges heat with the first heat exchange tube bank and then exchanges heat with the second heat exchange tube bank and the fourth heat exchange tube bank, the heat of the cooling water has no influence on the air conditioning system. Meanwhile, two rows of heat exchange tube sets are used for radiating heat for cooling water, so that the heat radiation quantity can be increased, the adverse effect of overhigh air temperature on the heat radiation of the cooling water is reduced, and the normal operation of the refrigeration operation of the system is ensured.
When the heating operation is carried out, the electromagnetic valve II and the electromagnetic valve III are opened, the electromagnetic valve I and the electromagnetic valve IV are closed, and the refrigerant is evaporated and absorbs heat through the third row of heat exchange tube group. Meanwhile, cooling water is radiated through the second row of heat exchange tube group. At this time, the air firstly exchanges heat with the cooling water in the second heat exchange pipe set, so that the temperature of the air is increased, the temperature of the cooling water is reduced, and the engine waste heat carried by the cooling water is transferred. And then, the heated air exchanges heat with the refrigerant in the third heat exchange tube set, and the waste heat is transferred to the refrigerant, so that the requirement of refrigerant evaporation is met. Therefore, the evaporation efficiency of the refrigerant is improved, the heating effect of the air conditioner is improved, waste heat of the engine can be fully utilized, and the energy-saving and environment-friendly effects are achieved. Meanwhile, because the ambient temperature is low, the heat exchanger tube bank in one row can sufficiently meet the heat dissipation requirement of cooling water.
The invention adjusts the heat exchange state of the refrigerant, the cooling water and the outdoor air by switching different heat exchange tube sets in the outdoor heat exchanger, so that the gas heat pump can absorb the heat of the air and the heat of the cooling water when in low-temperature heating operation, thereby greatly improving the efficiency of the heat pump system.
The parts not involved in the present invention are the same as or can be implemented using the prior art.
Claims (3)
1. A high-efficiency gas heat pump system comprises a refrigerant circulating loop consisting of a compressor, a four-way valve, an outdoor heat exchanger and an indoor heat exchanger; the compressor is driven by a gas engine; the outdoor heat exchanger is characterized by comprising a refrigerant heat exchange tube set and a cooling water heat exchange tube set; the refrigerant heat exchange tube group and the cooling water heat exchange tube group are both in a vertical row shape and are formed by connecting a plurality of heat exchange tubes in series; the refrigerant heat exchange tube group is connected to the refrigerant circulation circuit; the cooling water heat exchange tube set is communicated with a cooling water path of the gas engine to form a cooling water circulation loop; the end parts of the refrigerant heat exchange tube group and the cooling water heat exchange tube group are respectively provided with an electromagnetic valve which can control the opening and closing of the electromagnetic valves; the refrigerant heat exchange tube group and the cooling water heat exchange tube group are three or more in total and are arranged in parallel at intervals.
2. The efficient gas heat pump system as recited in claim 1 wherein said outdoor heat exchanger is provided with a fan.
3. The efficient gas heat pump system as recited in claim 1 wherein said cooling water circulation circuit is provided with a water pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111267051.7A CN113915789A (en) | 2021-10-29 | 2021-10-29 | High-efficient gas heat pump system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111267051.7A CN113915789A (en) | 2021-10-29 | 2021-10-29 | High-efficient gas heat pump system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113915789A true CN113915789A (en) | 2022-01-11 |
Family
ID=79243536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111267051.7A Pending CN113915789A (en) | 2021-10-29 | 2021-10-29 | High-efficient gas heat pump system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113915789A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4614090A (en) * | 1985-01-31 | 1986-09-30 | Yanmar Diesel Engine Co. Ltd. | Outdoor unit of an air conditioner of an engine heat pump type |
| JPH03213966A (en) * | 1990-01-19 | 1991-09-19 | Aisin Seiki Co Ltd | Waste heat recoverying heat pump |
| JPH07174434A (en) * | 1993-12-17 | 1995-07-14 | Mitsubishi Heavy Ind Ltd | Engine-driven heat pump |
| JP2001355940A (en) * | 2000-06-16 | 2001-12-26 | Denso Corp | Heat pump device |
| CN106257158A (en) * | 2016-07-29 | 2016-12-28 | 东南大学 | A kind of hybrid-power combustion-gas thermal pump water-heater system and control method thereof |
| CN207065926U (en) * | 2018-01-16 | 2018-03-02 | 山西华腾能源科技有限公司 | The gas engine heat pump system that a kind of waste heat efficiently utilizes |
| CN109990500A (en) * | 2019-03-04 | 2019-07-09 | 南京天加环境科技有限公司 | A kind of combustion-gas thermal pump air-conditioning system that preventing back liquid and its control method |
| CN109990498A (en) * | 2019-03-04 | 2019-07-09 | 南京天加环境科技有限公司 | A kind of combustion-gas thermal pump air-conditioning system |
| CN110030763A (en) * | 2019-04-18 | 2019-07-19 | 蓝焰高科（天津）燃气技术有限公司 | Gas engine drives steam compression type Air Resource Heat Pump Unit operation method |
-
2021
- 2021-10-29 CN CN202111267051.7A patent/CN113915789A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4614090A (en) * | 1985-01-31 | 1986-09-30 | Yanmar Diesel Engine Co. Ltd. | Outdoor unit of an air conditioner of an engine heat pump type |
| JPH03213966A (en) * | 1990-01-19 | 1991-09-19 | Aisin Seiki Co Ltd | Waste heat recoverying heat pump |
| JPH07174434A (en) * | 1993-12-17 | 1995-07-14 | Mitsubishi Heavy Ind Ltd | Engine-driven heat pump |
| JP2001355940A (en) * | 2000-06-16 | 2001-12-26 | Denso Corp | Heat pump device |
| CN106257158A (en) * | 2016-07-29 | 2016-12-28 | 东南大学 | A kind of hybrid-power combustion-gas thermal pump water-heater system and control method thereof |
| CN207065926U (en) * | 2018-01-16 | 2018-03-02 | 山西华腾能源科技有限公司 | The gas engine heat pump system that a kind of waste heat efficiently utilizes |
| CN109990500A (en) * | 2019-03-04 | 2019-07-09 | 南京天加环境科技有限公司 | A kind of combustion-gas thermal pump air-conditioning system that preventing back liquid and its control method |
| CN109990498A (en) * | 2019-03-04 | 2019-07-09 | 南京天加环境科技有限公司 | A kind of combustion-gas thermal pump air-conditioning system |
| CN110030763A (en) * | 2019-04-18 | 2019-07-19 | 蓝焰高科（天津）燃气技术有限公司 | Gas engine drives steam compression type Air Resource Heat Pump Unit operation method |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220111 |