LU102468A1 - Total heat recovery type integrated gas heat pump heat supply unit and application thereof - Google Patents
Total heat recovery type integrated gas heat pump heat supply unit and application thereof Download PDFInfo
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- LU102468A1 LU102468A1 LU102468A LU102468A LU102468A1 LU 102468 A1 LU102468 A1 LU 102468A1 LU 102468 A LU102468 A LU 102468A LU 102468 A LU102468 A LU 102468A LU 102468 A1 LU102468 A1 LU 102468A1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B27/00—Machines, plants or systems, using particular sources of energy
- F25B27/02—Machines, plants or systems, using particular sources of energy using waste heat, e.g. from internal-combustion engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D15/00—Other domestic- or space-heating systems
- F24D15/04—Other domestic- or space-heating systems using heat pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H4/00—Fluid heaters characterised by the use of heat pumps
- F24H4/02—Water heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/06—Heat pumps characterised by the source of low potential heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/12—Heat pump
- F24D2200/123—Compression type heat pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/16—Waste heat
- F24D2200/18—Flue gas recuperation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/16—Waste heat
- F24D2200/26—Internal combustion engine
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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
- 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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- 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
- F25B2339/00—Details of evaporators; Details of condensers
- F25B2339/04—Details of condensers
- F25B2339/047—Water-cooled condensers
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
- Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
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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
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
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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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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The present invention belongs to the field of gas-driven air source heat pump heating, and particularly relates to a total heat recovery type integrated gas heat pump heat supply unit and an application thereof. The total heat recovery type integrated gas heat pump heat supply unit includes an internal combustion engine, a transmission coupling, a compressor, a condenser, an evaporator, a flue gas waste heat recovery device, a flue gas and air mixing chamber or the like; the internal combustion engine, the transmission coupling, the compressor and the condenser are connected in sequence, and the evaporator is connected back to the compressor; the flue gas waste heat recovery device is arranged on a flue gas pipeline of the internal combustion engine, and the flue gas and air mixing chamber communicates with an air inlet of the evaporator; a heating water pipeline is divided into two paths, the first path sequentially performs heat exchange with the condenser and the flue gas waste heat recovery device, and the second path merges with the first path after exchanging heat with the internal combustion engine, and then supplies high-temperature water to a user. The present invention abandons the limitation of the gas heat pump research pursuing the comprehensive energy efficiency ratio of multiple purposes and multiple working conditions, and no longer considers the summer cooling performance coefficient and the conversion of cold and heat, and enables the existing GHP technology to be successfully applied to heating systems with heating radiator as tail ends.
Description
TOTAL HEAT RECOVERY TYPE INTEGRATED GAS HEAT PUMP HEAT LU102468
SUPPLY UNIT AND APPLICATION THEREOF Field of the Invention The present invention belongs to the field of gas-driven air source heat pump heating, and particularly relates to a total heat recovery type integrated gas heat pump heat supply unit and an application thereof.
Background of the Invention The information disclosed in the background art of the present invention is used for only increasing the understanding of the overall background of the present invention, and is not necessarily regarded as acknowledging or in any form suggesting that the information constitutes the prior art known to those of ordinary skill in the art.
In the implementation process of clean energy reforms in recent years, gas and electricity are generally used to replace coal, gas and electricity belong to high-grade energy, wherein gas-fired wall-hung boilers or gas boilers are mostly used to replace coal by gas, and the energy of the high-grade energy, that is, the gas, is directly burned and is used for low-grade heating demand, resulting in loss of energy intensity and waste of energy grade.
With regard to air source heat pump units that are numerously used in district centralized heating adopt electricity as driving sources, the energy efficiency ratios are mostly between 2-2.5, the water supply temperature is generally around 50°C, when applied to centralized heating, the floor space is too large, the air source heat pump units basically operate during the peak period of the power grid, which has a greater impact on the power grid, and the increase in power consumption means an increase in the emissions of thermal power plants, which increases the total pollution. The research and development directions of various research institutions are mainly focused on how to improve the COP value and the absolute value of IPLV of an electrically driven heat pump unit and the efficiency of the entire heating system, various manufacturers have also introduced CO: cascading heat pumps to increase the water supply temperature, however, the special research on gas-driven air-source LU102468 heat pumps applicable to centralized heating systems is only in its infancy. A gas engine driven heat pump (gas engine driven heat pump, abbreviated as GHP) mainly refers to a multi-purpose unit applied to a multi-connected refrigerant air conditioning system. The main manufacturers include two Japanese brands and one Korean brand, that is, Panasonic Refrigeration Dalian Co., Ltd. (formerly Dalian Sanyo Refrigeration Co., Ltd.), Yanmar Co., Ltd. and South Korea LS Group Air Conditioning Division. The product features are all using a refrigerant (cooling agent) as the circulating medium of an indoor unit, and heating in winter is completed by sending hot air via an air conditioner. In 2019, Yanmar and Nanjing Tianjia Air Conditioning formed a strategic cooperation to launch a small gas-fired air source heat pump unit that can be used for district heating, but the principle when it is used for heating is to install a hot water heat exchanger on the basis of a refrigerant multi-line system.
In recent years, Beijing and other regions have added a large number of gas-fired thermal power plants to solve the problems of heating peak regulation and regional balance. The use of an electrically driven air source heat pump during the peak period of the power grid and the heating peak period essentially adds an energy conversion link. Dalian Panasonic and Nanjing Tianjia (Yanmar) respectively launched gas-driven air source heat pump units based on refrigerant circulation that can be used for district heating at the Shanghai International Refrigeration Exhibition in April 2019, but their evaporators (condensers) use traditional methods such as heating circulating water or using cylinder sleeve hot water to defrost by using flue gas, which increases the power consumption and the complexity of the device; and secondly, the heat dissipated from the surfaces of gas engines, bearings, compressors, heat exchangers, pipelines and the like in this type of units is not recycled yet.
At present, the air source heat pump units have been listed as renewable energy equipment by the Ministry of Housing and Urban-Rural Development, and natural gas belongs to a clean energy popularized and applied in the field of centralized heating. However, the use of natural gas still has the problem of flue gas emission,
chimneys with certain heights and nitrogen oxides of certain concentration need to LU102468 be both satisfied.
Existing gas-fired air source heat pumps require external heat replacement equipment and smoke exhaust devices and other accessories due to their complex structures, and large-scale units also need to be assembled on site.
The inventor discloses a gas-driven air source heat pump heat supply unit in the previous application 201610203393.5; however, during the model machine trial production process, it is found that its efficiency is not ideal, and the defrosting control problem is not well solved.
Summary of the Invention In view of the above problems, the inventor has found in researches that although the existing GHP technology can be used for indoor heating by air conditioning, it is not suitable for heating systems with heating radiators as tail ends.
The main technical reason is that limited by the compression ratio and the condensation (evaporation) pressure, the design value of optimal condensation temperature is about 50°C, and if hot water is produced by a plate heat exchanger, the practical water supply temperature is about 45°C, which can only be used for floor heating or fan coils.
Therefore, the present invention provides a total heat recovery type integrated gas heat pump heat supply unit and an application thereof.
In the present invention, without changing the condensation (evaporation) pressure, the circulating water temperature is further increased by a condensation heat exchanger arranged at the tail of the flue gas, and the actual water supply temperature is up to 85°C, which fully meets the heating demand in the form of heating radiators.
The first purpose of the present invention is to provide a total heat recovery type integrated gas heat pump heat supply unit.
The second purpose of the present invention is to provide an application of the total heat recovery type integrated gas heat pump heat supply unit.
In order to achieve the above-mentioned purposes of the invention, the present invention discloses the following technical solutions: First of all, the present invention discloses a total heat recovery type integrated gas heat pump heat supply unit, including: an internal combustion engine, a transmission LU102468 coupling, a compressor, a condenser, an expansion valve, an evaporator, a flue gas waste heat recovery device, smoke exhaust control valves, a flue gas and air mixing chamber, an air inlet window and a shell.
The internal combustion engine, the transmission coupling, the compressor and the condenser are connected in sequence; the expansion valve is arranged on a communication pipeline between the condenser and the evaporator, and the evaporator is connected back to the compressor to form an air source heat pump refrigerant system; the flue gas waste heat recovery device is arranged on a flue gas pipeline of the internal combustion engine, the flue gas and air mixing chamber communicates with an air inlet of the evaporator, and the smoke exhaust control valves are arranged on the flue gas pipeline between the internal combustion engine and the flue gas waste heat recovery device and on the flue gas pipeline between the internal combustion engine and the air mixing chamber; a heating water pipeline is divided into two paths, the first path sequentially performs heat exchange with the condenser and the flue gas waste heat recovery device and then supplies high-temperature water to a user, the second path merges with the first path after exchanging heat with the internal combustion engine, and then supplies high-temperature water to the user; the above-mentioned components are arranged in the shell, the air inlet window is arranged on the shell, the arrangement position of the air inlet window is based on the fact that the air can at least flow through the internal combustion engine, the transmission coupling and the compressor after entering; and an exhaust port of the evaporator is located at the outside of the shell. As a further technical solution, the outlet of the flue gas waste heat recovery device communicates with the flue gas and air mixing chamber, and the flue gas exchanges heat with the heating water in the flue gas waste heat recovery device and then enters the flue gas and air mixing chamber again for reuse.
As a further technical solution, the compressor is a screw or scroll compressor, the main function of the compressor is to compress a low-temperature refrigerant (or cooling agent) into a high-temperature and high-pressure refrigerant gas, which releases heat when flowing through the condenser, and becomes liquid after LU102468 exchanging heat with the heating water in the condenser, and the liquid refrigerant flows to the evaporator after being throttled and depressurized by a throttle valve and flows back into the compressor after absorbing a large amount of heat energy of the 5 air and the heat energy of the flue gas. As a further technical solution, a flow guide plate is arranged in the air inlet window, and the main function of the flow guide plate is to ensure that the inlet air first passes through the internal combustion engine, the coupling, the compressor, the heat exchangers, the pipelines and other heat dissipation components so as to fully absorb the waste heat.
As a further technical solution, a cylinder sleeve is arranged on the exterior of the internal combustion engine to conveniently heat the heating water.
As a further technical solution, the surfaces of the evaporator and the flue gas and air mixing chamber undergo anti-corrosion and anti-scaling treatments.
As a further technical solution, the total heat recovery type integrated gas heat pump heat supply unit further includes a unit support, and the unit support is arranged at the bottom of the shell to support the entire heat supply unit and to ensure a good air intake passage.
Secondly, the present invention discloses a first method of using the total heat recovery type integrated gas heat pump heat supply unit to heat heating water: the gas is burned in the internal combustion engine to push the transmission coupling to compress the refrigerant in the compressor, the low-temperature refrigerant becomes a high-temperature and high-pressure refrigerant gas after being compressed, the high-temperature and high-pressure refrigerant gas exchanges heat with the heating water in the condenser when flowing through the condenser, and the heating water enters the flue gas waste heat recovery device after being heated; the exhaust smoke after the combustion of the gas is divided into two paths, and one path enters the flue gas waste heat recovery device to further heat the heating hot water entering it; the other path of flue gas enters the flue gas and air mixing chamber of the evaporator to be mixed with the air that has absorbed the heat dissipated from the surfaces of the unit components to further improve the inlet air temperature of the evaporator and to LU102468 reduce the relative humidity of the inlet air, this path is mainly used during the period of lower temperature and higher humidity in the deep winter, and the flue gas control valve can be closed during the rest operation periods; the high-temperature and high-pressure refrigerant gas becomes a liquid refrigerant after the heat exchange, then enters the evaporator after being throttled and depressurized by the throttle valve, and flows back into the compressor for circulation after absorbing a large amount of heat energy of air and the heat energy of flue gas; and the other path of heating water directly exchanges heat with the internal combustion engine through an internal combustion engine cylinder sleeve, the two paths of heated heating water are combined and supplied to the user.
Thirdly, the present invention discloses a second method of using the total heat recovery type integrated gas heat pump heat supply unit to heat heating water: the exhaust gas after the combustion of the gas is divided into two paths, one path enters the flue gas waste heat recovery device to further heat the heating hot water entering it, and then the flue gas enters the flue gas and air mixing chamber of the evaporator again to be mixed with the air that has absorbed the heat dissipated from the surfaces of the unit components; and the other path of flue gas directly enters the flue gas and air mixing chamber of the evaporator, the flue gas entering the flue gas and air mixing chamber is mixed with the air that has absorbed the heat dissipated from the surfaces of the unit components to further improve the inlet air temperature of the evaporator and to reduce the relative humidity of the inlet air, and the other applications are the same as those in the first method.
Finally, the present invention discloses an application of the total heat recovery type integrated gas heat pump heat supply unit and the methods in the field of environmental protection.
The key technical principle of the present invention is to directly convert primary energy into mechanical energy (saving electricity conversion), the mechanical energy absorbs heat in the air and transmits the same to indoor heating, after the working of the primary energy, there is basically no loss of heat energy, and more than 90% of the heat energy is recovered for heating or domestic hot water, and the LU102468 cascade utilization of energy is realized through the principle of gas entropy increase.
Or, it can be explained by the exergy analysis theory, if the boiler gas process is regarded as a process of natural gas exergy loss, then the gas heat pump uses the exergy of the natural gas to convert the exergy of outdoor air into the exergy of indoor air.
The amount of primary energy consumed by the gas-fired air source heat pump is much lower than the amount of primary energy consumed by gas-fired power generation and then driving the heat pump for heating.
Compared with the prior art, the present invention has achieved the following beneficial effects: (1) The unit of the present invention is an integrated integral box structure and is a complete set of equipment.
Although the volume is slightly larger than that of the gas boiler with the same heat supply, the chimney can be omitted in most cases.
Due to the small gas consumption and the absence of pressure vessels such as boiler drums, the safety is much better than that of the gas boiler, so there is no need to supervise special equipment, and the original boiler room can be fully utilized in the reform of replacing the existing gas boiler. (2) The device of the present invention combines the use of natural gas with the exhaust air of the evaporator, thereby solving the problem of local environmental pollution by diluting the exhaust smoke concentration. (3) The present invention uses the internal combustion engine to drive the heat pump to extract heat from the air, and then continues to use the waste heat and mechanical friction heat in the heating system, so that the heat energy conversion rate is high.
Since the return air raises the temperature by the waste heat of the flue gas, its temperature and pressure are higher than those of ordinary electrically driven air source heat pumps, with the compression ratio unchanged, the evaporation temperature can be further increased by increasing the condensing pressure, in this way, the evaporation temperature of the evaporator during most operation periods is higher than the dew point temperature of the ambient air, and there is generally no frost under most environmental conditions without high-temperature flue gas.
Therefore, in the present invention, the evaporator is placed in the box body of the LU102468 heat pump unit, so that the intake air passes through all heat dissipation components in the box body, and is mixed with the flue gas in the flue gas waste heat recovery device to further increase the temperature after being heated by the surfaces of the internal combustion engine, the coupling, the compressor, the condenser, the pipelines and other components, so that the anti-frosting ability of the evaporator can be improved.
If the user of this unit is located in a high-humidity and low-temperature environment region or encounters extreme weather, the exhaust valve before entering the waste heat recovery device can be closed, therefore the high-temperature flue gas in the outlet of the internal combustion engine directly enters the flue gas mixing chamber of the evaporator to increase the inlet air temperature of the evaporator to a greater extent, so as to ensure that this unit becomes a real defrost-free air source heat pump unit. (4) In the present invention, the high-grade natural gas is used for working (entropy increase) at firstly, and the heat generated during the working is basically not lost, or the calorific value or calorific value of the natural gas does not change.
If the gas boiler is about to recover the condensation heat of the natural gas, the efficiency of a gas condensing boiler can exceed 100%, and it can be said that its energy efficiency ratio is about 1.0. The unit of the present invention can theoretically recover the waste heat according to 0.9 of the calorific value of the gas after the working of the natural gas, and if the energy efficiency ratio of the heat pump system driven by gas-driven compression heating reaches 2.0, the heating efficiency of the two superimposed heating can reach 290%. (5) The present invention abandons the limitation of the gas heat pump research pursuing the comprehensive energy efficiency ratio of multiple purposes and multiple working conditions, and no longer considers the summer cooling performance coefficient and the conversion of cold and heat, and can re-determine the ratio of the evaporator, the condenser and other equipment, as well as the system pressure.
The design and operating parameters of the unit fully meet the requirements of centralized heating, the manufacturing and testing are carried out according to the gas boiler standard, and the existing GHP technology can be LU102468 successfully applied to the heating systems with the heating radiator as the tail ends. Brief Description of the Drawings The drawings of the specification forming a part of the present application are used to provide a further understanding of the present application. The exemplary embodiments of the present application and the description thereof are used to explain the present application, and do not constitute improper limitations to the present application.
Fig. 1 is a structural schematic diagram of a total heat recovery type integrated gas heat pump heat supply unit in an embodiment 1 of the present invention.
Fig. 2 is a structural schematic diagram of a total heat recovery type integrated gas heat pump heat supply unit in an embodiment 2 of the present invention. Reference signs: l-internal combustion engine, 2-transmission coupling, 3-compressor, 4-condenser, 5-expansion valve, 6-evaporator, 7-flue gas waste heat recovery device, 8-exhaust smoke control valve, 9-flue gas and air mixing chamber, 10-shell, 11-air inlet window, 12-unit support.
Detailed Description of the Embodiments It should be noted that the following detailed descriptions are all illustrative and are intended to provide further descriptions of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs.
It should be noted that the terms used here are only used for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that, when the terms "comprising" and/or "including" are used in this specification, they indicate the presence of features, steps, operations, devices,
components, and/or combinations thereof.
LU102468 As described in the background art, although the existing GHP technology can be used for indoor heating by air conditioning, it is not suitable for heating systems with heating radiators as tail ends.
Therefore, the present invention proposes a total heat recovery type integrated gas heat pump heat supply unit.
The present invention will now be further described with reference to the drawings and specific embodiments.
Embodiment 1 A total heat recovery type integrated gas heat pump heat supply unit, as shown in Fig. 1, includes: an internal combustion engine 1, a transmission coupling 2, a compressor 3, a condenser 4, an expansion valve 5, an evaporator 6, a flue gas waste heat recovery device 7, smoke exhaust control valves 8, a flue gas and air mixing chamber 9, an air inlet window 11 and a shell 10. The internal combustion engine 1, the transmission coupling 2, the compressor 3 and the condenser 4 are connected in sequence, and a cylinder sleeve is arranged on the exterior of the internal combustion engine 1; the expansion valve 5 is arranged on a communication pipeline between the condenser 4 and the evaporator 6, and the evaporator 6 is connected back to the compressor 3 to form an air source heat pump refrigerant system; the flue gas waste heat recovery device 7 is arranged on a flue gas pipeline of the internal combustion engine 1, the flue gas and air mixing chamber 9 communicates with an air inlet of the evaporator 6, and the smoke exhaust control valves 8 are arranged on the flue gas pipeline between the internal combustion engine 1 and the flue gas waste heat recovery device 7 and on the flue gas pipeline between the internal combustion engine 1 and the flue gas and air mixing chamber 9; a heating water pipeline is divided into two paths, the first path sequentially performs heat exchange with the condenser 4 and the flue gas waste heat recovery device 7 and then supplies high-temperature water to a user, the second path merges with the first path after exchanging heat with the internal combustion engine 1, and then supplies high-temperature water to the user; the above-mentioned components are arranged in the shell 10, the air inlet window 11 is arranged on the shell 10, the arrangement position of the air inlet window 11 is based on the fact that the air can at least flow through the internal combustion engine 1, the transmission coupling 2 and LU102468 the compressor 3 after entering; and an exhaust port of the evaporator 6 is located at the outside of the shell 10. The heat supply unit in this embodiment is characterized in that the waste heat of flue gas is mainly used for warming up heating water supply and is generally used for providing heating water supply below 55°C, and the heat supply unit is low in manufacturing cost and high in thermal efficiency, and is suitable for use in cold regions with lower relative air humidity.
Embodiment 2 A total heat recovery type integrated gas heat pump heat supply unit, the difference with embodiment 1 lies in that: as shown in Fig. 2, the outlet of the flue gas waste heat recovery device 7 communicates with the flue gas and air mixing chamber 9, and the flue gas exchanges heat with the heating water in the flue gas waste heat recovery device 7 and then enters the flue gas and air mixing chamber 9 again for reuse.
The heat supply unit in this embodiment is characterized in that: due to the high condensing pressure of this model, the temperature of the condenser effluent or the heating circulating water entering the flue gas waste heat recovery device 7 is relatively high, resulting in a higher temperature of the flue gas (secondary flue gas) discharged from the flue gas waste heat recovery device, therefore all water should enter the evaporator for further full utilization.
The heat supply unit in this embodiment can provide heating hot water above 55°C, which is suitable for use in severe cold regions with higher relative air humidity.
Embodiment 3 À total heat recovery type integrated gas heat pump heat supply unit, the difference with embodiment 1 or 2 lies in that: a flow guide plate is arranged in the air inlet window 11; and the flow guide plate can ensure that the inlet air first passes through the internal combustion engine, the coupling, the compressor, the heat exchangers, the pipelines and other heat dissipation components so as to fully absorb the waste heat.
Embodiment 4 LU102468 A total heat recovery type integrated gas heat pump heat supply unit, the difference with embodiment 1 or 2 lies in that: the surfaces of the evaporator and the flue gas and air mixing chamber undergo anti-corrosion and anti-scaling treatments.
The total heat recovery type integrated gas heat pump heat supply unit further includes a unit support 12, and the unit support 12 is arranged at the bottom of the shell 12 to support the entire heat supply unit.
Embodiment 5 A method of using the total heat recovery type integrated gas heat pump heat supply unit in embodiment 1 to heat heating water: the gas is burned in the internal combustion engine 1 to push the transmission coupling 2 to compress the refrigerant in the compressor 3, the low-temperature refrigerant becomes a high-temperature and high-pressure refrigerant gas after being compressed, the high-temperature and high-pressure refrigerant gas exchanges heat with the heating water in the condenser 4 when flowing through the condenser 4, and the heating water enters the flue gas waste heat recovery device 7 after being heated; the exhaust smoke after the combustion of the gas is divided into two paths, and one path enters the flue gas waste heat recovery device 7 to further heat the heating hot water entering it; the other path of flue gas enters the flue gas and air mixing chamber 9 of the evaporator 6 to be mixed with the air that has absorbed the heat dissipated from the surfaces of the unit components to further improve the inlet air temperature of the evaporator 6 and to reduce the relative humidity of the inlet air, this path is mainly used during the period of lower temperature and higher humidity in the deep winter, and the flue gas control valve can be closed during the rest operation periods; the high-temperature and high-pressure refrigerant gas becomes a liquid refrigerant after the heat exchange, then enters the evaporator 6 after being throttled and depressurized by the throttle valve 5, and flows back into the compressor 3 for circulation after absorbing a large amount of heat energy of air and the heat energy of flue gas; and the other path of heating water directly exchanges heat with the internal combustion engine 1 through the internal combustion engine 1, the two paths of heated heating water are combined and supplied to the user. LU102468 Embodiment 6 A method of using the total heat recovery type integrated gas heat pump heat supply unit in embodiment 2 to heat heating water: the exhaust gas after the combustion of the gas is divided into two paths, one path enters the flue gas waste heat recovery device 7 to further heat the heating hot water entering it, and then the flue gas enters the flue gas and air mixing chamber 9 of the evaporator 6 again to be mixed with the air that has absorbed the heat dissipated from the surfaces of the unit components for heating the cooling agent of the evaporator 6, and the flue gas control valve 8 is in an open state in most periods. The other path of flue gas directly enters the flue gas and air mixing chamber 9 of the evaporator 6, the flue gas entering the flue gas and air mixing chamber 9 is mixed with the air that has absorbed the heat dissipated from the surfaces of the unit components to further improve the inlet air temperature of the evaporator 6 and to reduce the relative humidity of the inlet air. Due to the high exhaust smoke temperature, the evaporation temperature can be increased to a greater extent when the inlet air temperature is lower. This path is mainly used during the period of lower temperature and higher humidity in the deep winter, and the flue gas control valve can be closed during the rest operation periods. The other applications are the same as those in the method in embodiment 5.
The foregoing descriptions are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modifications, equivalent replacements, improvements and the like, made within the spirit and principle of the present application, shall all be included in the protection scope of the present application.
Claims (10)
1. A total heat recovery type integrated gas heat pump heat supply unit, comprising: an internal combustion engine, a transmission coupling, a compressor, a condenser, an evaporator, a flue gas waste heat recovery device, smoke exhaust control valves, a flue gas and air mixing chamber, an air inlet window and a shell; the internal combustion engine, the transmission coupling, the compressor and the condenser are connected in sequence, and the evaporator is connected back to the compressor to form an air source heat pump refrigerant system; the flue gas waste heat recovery device is arranged on a flue gas pipeline of the internal combustion engine, and the flue gas and air mixing chamber communicates with an air inlet of the evaporator; the smoke exhaust control valves are arranged on the flue gas pipeline between the internal combustion engine and the flue gas waste heat recovery device and on the flue gas pipeline between the internal combustion engine and the flue gas and air mixing chamber; a heating water pipeline is divided into two paths, the first path sequentially performs heat exchange with the condenser and the flue gas waste heat recovery device and then supplies high-temperature water to a user, the second path merges with the first path after exchanging heat with the internal combustion engine, and then supplies high-temperature water to the user; the above-mentioned components are arranged in the shell, the air inlet window is arranged on the shell, the arrangement position of the air inlet window is based on the fact that the air can at least flow through the internal combustion engine, the transmission coupling and the compressor after entering; and an exhaust port of the evaporator is located at the outside of the shell.
2. The total heat recovery type integrated gas heat pump heat supply unit according to claim 1, wherein the outlet of the flue gas waste heat recovery device communicates with the flue gas and air mixing chamber.
3. The total heat recovery type integrated gas heat pump heat supply unit according to claim 1 or 2, further comprising an expansion valve, wherein the expansion valve is arranged on a communication pipeline between the condenser and the evaporator. 0102468
4. The total heat recovery type integrated gas heat pump heat supply unit according to claim 1 or 2, wherein the compressor is a screw or scroll compressor.
5. The total heat recovery type integrated gas heat pump heat supply unit according to claim 1 or 2, wherein a flow guide plate is arranged in the air inlet window.
6. The total heat recovery type integrated gas heat pump heat supply unit according to claim 1 or 2, wherein a cylinder sleeve is arranged on the exterior of the internal combustion engine.
7. The total heat recovery type integrated gas heat pump heat supply unit according to claim 1 or 2, wherein the surfaces of the evaporator and the flue gas and air mixing chamber undergo anti-corrosion and anti-scaling treatments; and preferably, the total heat recovery type integrated gas heat pump heat supply unit further comprises a unit support, and the unit support is arranged at the bottom of the shell.
8. A method of using the total heat recovery type integrated gas heat pump heat supply unit according to claim 1 to heat heating water, wherein the gas is burned in the internal combustion engine to push the transmission coupling to compress the refrigerant in the compressor, the low-temperature refrigerant becomes a high-temperature and high-pressure refrigerant gas after being compressed, the high-temperature and high-pressure refrigerant gas exchanges heat with the heating water in the condenser when flowing through the condenser, and the heating water enters the flue gas waste heat recovery device after being heated; the exhaust smoke after the combustion of the gas is divided into two paths, and one path enters the flue gas waste heat recovery device to further heat the heating hot water entering it; the other path of flue gas enters the flue gas and air mixing chamber of the evaporator to | be mixed with the air that has absorbed the heat dissipated from the surfaces of the | unit components to further improve the inlet air temperature of the evaporator and to reduce the relative humidity of the inlet air, this path is mainly used during the period of lower temperature and higher humidity in the deep winter, and the flue gas control valve can be closed during the rest operation periods; the high-temperature and high-pressure refrigerant gas becomes a liquid refrigerant after the heat 0102468 exchange, then enters the evaporator after being throttled and depressurized by the throttle valve, and flows back into the compressor for circulation after absorbing a large amount of heat energy of air and the heat energy of flue gas; and the other path of heating water directly exchanges heat with the internal combustion engine through an internal combustion engine cylinder sleeve, the two paths of heated heating water are combined and supplied to the user.
9. A method of using the total heat recovery type integrated gas heat pump heat supply unit according to claim 2 to heat heating water, wherein the exhaust gas after the combustion of the gas is divided into two paths, one path enters the flue gas waste heat recovery device to further heat the heating hot water entering it, and then the flue gas enters the flue gas and air mixing chamber of the evaporator again to be mixed with the air that has absorbed the heat dissipated from the surfaces of the unit components; and the other path of flue gas directly enters the flue gas and air mixing chamber of the evaporator, the flue gas entering the flue gas and air mixing chamber is mixed with the air that has absorbed the heat dissipated from the surfaces of the unit components to further improve the inlet air temperature of the evaporator and to reduce the relative humidity of the inlet air, and the other applications are the same as those in the method of claim 8.
10. An application of the total heat recovery type integrated gas heat pump heat supply unit according to any of claims 1-7 and the method according to claim 8 or 9 in the field of environmental protection.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910501655.XA CN110173751B (en) | 2019-06-11 | 2019-06-11 | Total heat recovery type integrated gas heat pump heat supply unit and application thereof |
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| LU102468A1 true LU102468A1 (en) | 2021-02-08 |
| LU102468B1 LU102468B1 (en) | 2021-04-27 |
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| LU102468A LU102468B1 (en) | 2019-06-11 | 2020-04-09 | Total heat recovery type integrated gas heat pump heat supply unit and application thereof |
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| CN (1) | CN110173751B (en) |
| LU (1) | LU102468B1 (en) |
| WO (1) | WO2020248684A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110173751B (en) * | 2019-06-11 | 2021-04-13 | 山东省食品发酵工业研究设计院 | Total heat recovery type integrated gas heat pump heat supply unit and application thereof |
| CN111207408B (en) * | 2020-01-17 | 2022-04-19 | 贵州中能投科技有限公司 | Intelligent waste heat recovery system |
| CN111306823B (en) * | 2020-02-26 | 2022-02-22 | 西京学院 | Multifunctional assembled split type heat pump with additional reinforcing joint group |
| CN111878224B (en) * | 2020-06-30 | 2021-06-04 | 同济大学 | Evaporation heat exchanger for recycling surface heat radiation of component and household miniature cogeneration device |
| CN112268449B (en) * | 2020-09-30 | 2022-06-07 | 山东省食品发酵工业研究设计院 | Gas engine air source heat pump unit, drying device, drying system and method |
| CN112361653B (en) * | 2020-10-28 | 2023-02-24 | 上海本家空调系统有限公司 | Heat pump driven by gas engine |
| CN112815568B (en) * | 2021-01-14 | 2022-04-26 | 中科广能能源研究院(重庆)有限公司 | Gas heat pump air conditioner heat recovery system and control method thereof |
| CN112762501A (en) * | 2021-01-22 | 2021-05-07 | 中益能(北京)供热技术有限公司 | Combined heat and cold power supply system |
| CN112879940B (en) * | 2021-02-22 | 2022-08-23 | 西安热工研究院有限公司 | Low-temperature flue gas latent heat recovery and comprehensive utilization system and method |
| CN112856855A (en) * | 2021-03-04 | 2021-05-28 | 郑州之铂智能科技有限公司 | Air-cooled heat pump total heat recovery unit and control method |
| CN114111094B (en) * | 2021-11-30 | 2023-02-28 | 中国华能集团清洁能源技术研究院有限公司 | Desulfurization slurry waste heat recovery device utilizing unit steam extraction and absorption heat pump |
| CN114877396A (en) * | 2022-06-02 | 2022-08-09 | 江苏海雷德蒙新能源(集团)有限公司 | Direct expansion type energy tower heat pump heat supply system and heat supply method |
| CN115111806B (en) * | 2022-06-21 | 2023-11-03 | 西安热工研究院有限公司 | Combined heat and power system and method based on energy cascade utilization |
| CN116518649B (en) * | 2023-07-03 | 2023-08-29 | 山东工业职业学院 | Waste gas treatment device for chemical production |
| CN117346386B (en) * | 2023-10-08 | 2024-05-14 | 北京华远同创控股有限公司 | Air can integration heat pump set |
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| US5429179A (en) * | 1993-08-23 | 1995-07-04 | Gas Research Institute | Gas engine driven heat pump system having integrated heat recovery and auxiliary components |
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| CN202209811U (en) * | 2011-08-03 | 2012-05-02 | 北京恩耐特分布能源技术有限公司 | Multiple cold source cold supply system for data machine room |
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| JP6185346B2 (en) * | 2013-09-18 | 2017-08-23 | ヤンマー株式会社 | Engine driven heat pump |
| CN203642307U (en) * | 2013-12-31 | 2014-06-11 | 山东科进能源科技有限公司 | Gas-engine directly-driving type waste heat recycling type heat pump water heating machine set |
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| CN208269454U (en) * | 2018-05-28 | 2018-12-21 | 北京兴马阳光新能源科技有限公司 | The mounting structure of net for air-source heat pump units |
| CN208419264U (en) * | 2018-06-20 | 2019-01-22 | 珠海格力电器股份有限公司 | Gas direct-drive anti-frosting air conditioning system |
| CN110173751B (en) * | 2019-06-11 | 2021-04-13 | 山东省食品发酵工业研究设计院 | Total heat recovery type integrated gas heat pump heat supply unit and application thereof |
-
2019
- 2019-06-11 CN CN201910501655.XA patent/CN110173751B/en not_active Expired - Fee Related
-
2020
- 2020-04-09 WO PCT/CN2020/084015 patent/WO2020248684A1/en active Application Filing
- 2020-04-09 LU LU102468A patent/LU102468B1/en active IP Right Grant
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| Publication number | Publication date |
|---|---|
| CN110173751A (en) | 2019-08-27 |
| CN110173751B (en) | 2021-04-13 |
| LU102468B1 (en) | 2021-04-27 |
| WO2020248684A1 (en) | 2020-12-17 |
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| FG | Patent granted |
Effective date: 20210427 |