CN110748947A - Heating device - Google Patents
Heating device Download PDFInfo
- Publication number
- CN110748947A CN110748947A CN201810817330.8A CN201810817330A CN110748947A CN 110748947 A CN110748947 A CN 110748947A CN 201810817330 A CN201810817330 A CN 201810817330A CN 110748947 A CN110748947 A CN 110748947A
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- Prior art keywords
- unit
- heat
- heating
- heat exchange
- energy
- 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.)
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 113
- 239000002918 waste heat Substances 0.000 claims abstract description 26
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 20
- 238000001816 cooling Methods 0.000 claims abstract description 17
- 238000011084 recovery Methods 0.000 claims abstract description 16
- 239000000446 fuel Substances 0.000 claims abstract description 10
- 239000007789 gas Substances 0.000 claims description 27
- 238000009833 condensation Methods 0.000 claims description 6
- 230000005494 condensation Effects 0.000 claims description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 16
- 239000000498 cooling water Substances 0.000 description 12
- 238000010586 diagram Methods 0.000 description 8
- 239000003507 refrigerant Substances 0.000 description 6
- 239000008236 heating water Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The invention discloses a heating device, comprising: a heating unit for converting fuel energy into heat energy to heat the condensing agent; the first heat exchange unit is used for exchanging heat with the heated condensing agent and supplying heat energy to heating equipment; the condensing unit is used for cooling the condensing agent after heat exchange; and the waste heat recovery unit is used for recovering the waste heat generated by the heating unit and supplying the recovered waste heat to the heating equipment in a heat exchange mode. The invention has the beneficial effects that: according to the heating device, the heating unit generates heat, the heat is exchanged by the condensing agent and then the heat energy is supplied to the heating equipment, so that the heat efficiency can be effectively improved, the waste heat generated by the heating unit is recovered by the waste heat recovery unit, the heat loss can be effectively reduced, and the heat efficiency is further improved.
Description
Technical Field
The invention relates to the technical field of heating, in particular to a heating device.
Background
In the prior art, a traditional boiler is used for heating in winter, and the main principle is that fuel is burnt into flame, heat is absorbed through a fire tube, then water is heated, and the heat efficiency is about 80% -90%. The defects of the traditional boiler heating are that the heat energy loss is large and the heat efficiency is not high.
An effective solution to the problems in the related art has not been proposed yet.
Disclosure of Invention
In view of the above technical problems in the related art, the present invention provides a heating device, which is different from a conventional boiler heating manner and can effectively reduce the loss of heat energy.
In order to achieve the technical purpose, the technical scheme of the invention is realized as follows:
a heating device comprising: a heating unit for converting fuel energy into heat energy to heat the condensing agent; the first heat exchange unit is used for exchanging heat with the heated condensing agent and supplying heat energy to heating equipment; the condensing unit is used for cooling the condensing agent after heat exchange; and the waste heat recovery unit is used for recovering the waste heat generated by the heating unit and supplying the recovered waste heat to the heating equipment in a heat exchange mode.
Preferably, the waste heat recovery unit includes: the cooling unit cools the heating unit in a heat exchange mode; and the second heat exchange unit exchanges heat with the cooling unit and supplies heat energy to heating equipment.
Preferably, the waste heat recovery unit includes: an exhaust unit for exhausting gas generated by the heating unit; and the third heat exchange unit exchanges heat with the exhaust unit and supplies heat energy to heating equipment.
Preferably, the waste heat recovery unit includes: and the fourth heat exchange unit exchanges heat with the exhaust unit after the third heat exchange unit and supplies heat energy to the condensation unit.
Preferably, the fourth heat exchange unit drives air to flow, so that the exhaust unit exchanges heat with air, and the air flows to the condensation unit.
Preferably, the fourth heat exchange unit comprises a fan and an air-cooled radiator.
Preferably, the heating unit includes an engine and a compressor.
Preferably, the condensing unit includes an expansion valve and a condenser.
Preferably, the heating device further comprises an equipment housing, and the heating unit is arranged inside the equipment housing.
The invention has the beneficial effects that: according to the heating device, the heating unit generates heat, the heat is exchanged by the condensing agent and then the heat energy is supplied to the heating equipment, so that the heat efficiency can be effectively improved, the waste heat generated by the heating unit is recovered by the waste heat recovery unit, the heat loss can be effectively reduced, and the heat efficiency is further improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a heating apparatus according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a heating unit of the heating apparatus according to the embodiment of the present invention;
fig. 3 is a schematic structural diagram of a heating unit, an exhaust unit and a third heat exchange unit of the heating device according to the embodiment of the invention;
fig. 4 is a schematic structural view of a removal device housing of the heating apparatus according to the embodiment of the present invention;
fig. 5 is a schematic connection diagram of a third heat exchange unit and a fourth heat exchange unit of the heating device according to the embodiment of the invention.
In the figure: 1. a heating device; 10. a heating unit; 20. a first heat exchange unit; 30. a condensing unit; 40. an exhaust unit; 50. a third heat exchange unit; 60. a temperature reduction unit; 70. a second heat exchange unit; 80. a fourth heat exchange unit; 90. an equipment housing;
11. an engine; 12. a compressor; 13. a coupling; 14. a generator; 15. an air filter element;
31. a condenser; 32. an expansion valve;
41. an exhaust branch pipe; 42. an engine exhaust pipe; 43. a tail gas pipe; 44. a tail gas outlet;
51. an exhaust outlet; 52. a heat exchange water inlet; 53. a heat exchange water outlet;
61. a cooling water outlet pipe; 62. a cooling water inlet pipe;
71. a backwater inlet; 72. a water supply outlet;
81. an air-cooled radiator; 82. a fan;
l1, a high-temperature high-pressure exhaust pipe; l2, a low-temperature high-pressure exhaust pipe; l3, a low-pressure pipe for spray refrigeration; and L4, a low-temperature low-pressure air inlet pipe.
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 that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
Fig. 1 is a schematic structural diagram of a heating apparatus according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a heating unit of the heating apparatus according to the embodiment of the present invention.
As shown in fig. 1, a heating apparatus 1 according to an embodiment of the present invention includes: a heating unit 10 for converting fuel energy into heat energy to heat the condensing agent; a first heat exchange unit 20 for exchanging heat with the heated refrigerant and supplying heat energy to a heating facility (not shown); the condensing unit 30 is used for cooling the condensing agent after heat exchange; and the waste heat recovery unit is used for recovering waste heat generated by the heating unit 10 and supplying the recovered waste heat to the heating equipment in a heat exchange mode.
As shown in fig. 1 and 2, the heating unit 10 includes, for example, an engine 11 and a compressor 12. The engine 11 is connected to the compressor 12 through a coupling 13. The engine 11 is also connected to a generator 14 and an air filter 15. The engine 11 is not particularly limited, and may be a gasoline engine, a diesel engine, or a natural gas engine. The compressor 12 may be a refrigeration compressor or a heating compressor.
The generator 14 works to make the engine 11 burn fuel, convert chemical energy of the fuel into kinetic energy, and drive the compressor 12 to do work and heat. The refrigerant is first heated and pressurized by the compressor 12, and then the heated and pressurized refrigerant exchanges heat with the first heat exchange unit 20. The first heat exchange unit 20 is, for example, a plate heat exchanger, and is connected to a heating system to supply the heat energy obtained by the heat exchange to a heating facility for heating. Subsequently, the heat-exchanged refrigerant is cooled by the condensing unit 30, and passes through the compressor 12 again, thereby completing the cycle. Thus, most of the energy of the fuel is supplied to the heating system through the first heat exchange unit 20.
Specifically, the condensing unit 30 includes, for example, a condenser 31 and an expansion valve 32. The refrigerant circulates in the pipe, and passes through the compressor 12, the first heat exchange unit 20, the expansion valve 32, and the condenser 31 in order. As shown in fig. 1, the piping includes a high-temperature high-pressure discharge pipe L1 between the compressor 12 and the first heat exchange unit 20, a low-temperature high-pressure discharge pipe L2 between the first heat exchange unit 20 and the expansion valve 32, a burst cooling low-pressure pipe L3 between the expansion valve 32 and the condenser 31, and a low-temperature low-pressure intake pipe L4 between the condenser 31 and the compressor 12.
The type of the condensing agent is not particularly limited, and may be selected as required, for example, with respect to 22, 22 passes through the compressor 12, becomes a high-temperature and high-pressure state of about 50 to 60 ℃, enters the high-temperature and high-pressure exhaust pipe L1 to reach the first heat exchange unit 20 for heat exchange, the temperature of the condensing agent after heat exchange is reduced, becomes a low-temperature and high-pressure state of about 40 ℃, enters the low-temperature and high-pressure exhaust pipe L2, reaches the expansion valve 32 through the low-temperature and high-pressure exhaust pipe L2, passes through the expansion valve 32 for spray cooling, is reduced to about-20 ℃, enters the spray cooling low-pressure pipe L3, then reaches the condenser 31 for heat exchange with the condenser 31, finally becomes a low-temperature and low-pressure gas of about-6 to-7 ℃, enters the low-temperature and low-pressure inlet pipe.
Fig. 3 is a schematic structural diagram of the heating unit 10, the exhaust unit and the third heat exchange unit of the heating apparatus 1 according to the embodiment of the present invention.
Next, the waste heat recovery unit will be explained.
As shown in fig. 3, the waste heat recovery unit includes an exhaust unit 40 for exhausting gas generated by the heating unit 10; the third heat exchange unit 50 exchanges heat with the exhaust unit 40 and supplies heat energy to the heating facility. The exhaust unit 40 includes, for example, an engine exhaust branch pipe 41, an engine exhaust pipe 42, an exhaust pipe 43 (see fig. 5), and an exhaust outlet 44 (see fig. 5). An engine exhaust outlet 51 is formed in the third heat exchange unit 50, and a heat exchange water inlet 52 and a heat exchange water outlet 53 are also formed in the third heat exchange unit 50. The temperature of the exhaust gas after the fuel is burned by the engine 11 is very high, about 600-1000 ℃, the exhaust gas is collected through the engine exhaust branch pipe 41, the exhaust gas enters the engine exhaust pipe 42 and reaches the third heat exchange unit 50 for heat exchange, the exhaust gas after heat exchange is about 40-50 ℃, the exhaust gas is discharged through the exhaust outlet 51 and enters the exhaust pipe 43, and finally the exhaust gas is discharged from the exhaust outlet 44 to the outer side of the heating device 1. Water enters the third heat exchange unit 50 from the heat exchange water inlet 52, exchanges heat with exhaust gas reaching the third heat exchange unit 50, flows out from the heat exchange water outlet 53, and water flowing out from the heat exchange water outlet 53 is connected to heating equipment for heating.
Fig. 4 is a schematic structural view of the heating apparatus 1 according to the embodiment of the present invention, except for the device case.
As shown in fig. 4, the waste heat recovery unit further includes a cooling unit 60, which cools the heating unit 10 by heat exchange; and a second heat exchange unit 70 exchanging heat with the cooling unit 60 to supply heat energy to the heating apparatus. The temperature reducing unit 60 includes, for example, a cooling water inlet pipe 62 and a cooling water outlet pipe 61. The cooling water with the temperature of about 40-50 ℃ enters the cooling water inlet pipe 62 to reach the engine 11 to cool the engine 11, and then the cooling water is heated to 80-90 ℃ and enters the cooling water outlet pipe 61 to reach the second heat exchange unit 70. The second heat exchange unit 70 is, for example, a plate heat exchanger, the second heat exchange unit 70 is connected to a water pipe of the heating apparatus through a return water inlet 71 and a water supply outlet 72, the heating water enters the second heat exchange unit 70 from the return water inlet 71, and exchanges heat with the cooling water in the second heat exchange unit 70, the heating water is heated, the cooling water is cooled, and the heating water flows out from the water supply outlet 72 and is supplied to the heating apparatus for heating. The cooling water enters the cooling water inlet pipe 62 again to cool the engine 11. Thus, the engine 11 is cooled, and heat generated by the self-heating of the engine 11 is recycled for heating, so that the heat efficiency is improved, and the energy loss is reduced.
Fig. 5 is a schematic connection diagram of a third heat exchange unit and a fourth heat exchange unit of the heating device according to the embodiment of the invention.
Refer to fig. 1, 4 and 5. The waste heat recovery unit further includes: the fourth heat exchange unit 80 exchanges heat with the exhaust unit 40 after the third heat exchange unit 50, and supplies heat energy to the condensation unit 30. As mentioned before, the exhaust gas reaches the third heat exchange unit 50 for heat exchange, the exhaust gas after heat exchange is about 40 to 50 ℃, and the fourth heat exchange unit 80 can recover the heat energy of the exhaust gas, so as to further improve the heat efficiency. Specifically, the fourth heat exchange unit 80 drives the air to flow, so that the exhaust unit 40 exchanges heat with the air, and the air flows to the condensation unit 30.
As shown in fig. 1, the fourth heat exchange unit 80 includes, for example, a fan 82 and an air-cooled radiator 81. The air-cooled radiator 81 is disposed on the side of the engine 11, for example, and the fan 82 is disposed above the engine 11, for example. As shown in fig. 5, the exhaust pipe 43 is disposed in close contact with the air-cooled radiator 81. The exhaust gas at about 40-50 ℃ is discharged into the tail gas pipe 43 through the exhaust outlet 51, the fan 82 works to extract air, the air passes through the air cooling radiator 81 to cool the tail gas pipe 43, the heat of the exhaust gas in the tail gas pipe 43 is taken away, the temperature of the air is raised, and then the air flows upwards to the condenser 31 under the action of the fan 82, so that the condenser 31 absorbs the heat of the air and the exhaust gas, when the condenser 31 exchanges heat with the condensing agent, the part of heat is absorbed by the condensing agent, and finally the heat is used for heating. Therefore, the tail gas pipe 43 is cooled, and the heat of the exhaust gas is recycled for heating, so that the heat efficiency is improved, and the energy loss is reduced.
As shown in fig. 1, the heating apparatus 1 further includes an equipment enclosure 90, and the heating unit 10 is disposed inside the equipment enclosure 90. More specifically, only one side of the apparatus casing 90 is opened, and the other side is closed, and the air-cooled radiator 81 is provided on one side of the opening, and the fan 82 and the condenser 31 are provided on the top of the apparatus casing 90. The equipment housing 90 can minimize the dispersion of the heat generated by the heating unit 10 itself and not recovered by the second heat exchange unit 70, so that when the fan 82 drives the air to flow, the air can also recover the heat to the condenser 31, thereby improving the thermal efficiency, reducing the energy loss, and cooling the heating unit 10.
In addition to the heating unit 10 being disposed in the equipment enclosure 90, the first heat exchange unit 20, the second heat exchange unit 70, the third heat exchange unit 50, the expansion valve 32, the refrigerant pipes (i.e., L1 to L4), the exhaust unit 40, and the temperature reduction unit 60 may be disposed in the equipment enclosure 90.
The first heat exchange unit 20, the second heat exchange unit 70, the third heat exchange unit 50, the expansion valve 32, the condensing agent pipeline (i.e., L1-L4), the exhaust unit 40, and the cooling unit 60 serve as internal components of the heating apparatus 1, the equipment enclosure 90, the condenser 31, the fan 82, and the air-cooled radiator 81 serve as an enclosure assembly of the heating apparatus 1, and a plurality of internal components may be disposed in one enclosure assembly as needed. The number of the fans 82 is not particularly limited and may be set as needed.
As described above, the power generated by the combustion of the fuel by the engine 11 of the heating unit 10 drives the compressor 12 to apply work to heat the condensing agent, and then the heat is exchanged with the condensing agent by the first heat exchange unit 20, so as to supply the heat to the heating equipment for heating.
A part of the heat generated by the engine 11 of the heating unit 10 is absorbed by the cooling unit 60, and is heat-exchanged by the second heat exchange unit 70, thereby being supplied to the heating equipment for heating. Another part of the heat generated by the engine 11 of the heating unit 10 itself is taken to the condenser 31 by the flow of air when the fan 82 is operated.
A part of the heat generated from the exhaust gas of the engine 11 is heat-exchanged by the third heat exchange unit 50, and is supplied to the heating facility for heating. Another part of the heat generated by the exhaust gas of the engine 11 is taken up by the condenser 31 by the flow of air when the fan 82 is operated.
That is, the condenser 31 absorbs a part of the heat generated by the engine 11 itself (a part not absorbed by the temperature decreasing unit 60), and a part of the heat generated by the exhaust gas (a part not heat-exchanged by the third heat exchanging unit 50), and further absorbs heat in a large amount of air. Since the condenser 31 can improve the heating efficiency of the compressor 12 by absorbing the heat, the compressor 12 can generate more heat energy to supply to the first heat exchange unit 20, and finally to the heating facility for heating.
The heating device can effectively reduce energy loss, reaches 300% of heat efficiency and is far higher than a common boiler.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. A heating device, comprising:
a heating unit for converting fuel energy into heat energy to heat the condensing agent;
the first heat exchange unit is used for exchanging heat with the heated condensing agent and supplying heat energy to heating equipment;
the condensing unit is used for cooling the condensing agent after heat exchange;
and the waste heat recovery unit is used for recovering the waste heat generated by the heating unit and supplying the recovered waste heat to the heating equipment in a heat exchange mode.
2. The heating apparatus according to claim 1, wherein the waste heat recovery unit includes:
the cooling unit cools the heating unit in a heat exchange mode;
and the second heat exchange unit exchanges heat with the cooling unit and supplies heat energy to heating equipment.
3. The heating apparatus according to claim 1, wherein the waste heat recovery unit includes:
an exhaust unit for exhausting gas generated by the heating unit;
and the third heat exchange unit exchanges heat with the exhaust unit and supplies heat energy to heating equipment.
4. The heating apparatus according to claim 3, wherein the waste heat recovery unit includes:
and the fourth heat exchange unit exchanges heat with the exhaust unit after the third heat exchange unit and supplies heat energy to the condensation unit.
5. Heating device according to claim 4,
the fourth heat exchange unit drives air to flow, so that the exhaust unit and the air exchange heat, and the air flows to the condensation unit.
6. The heating apparatus according to claim 5,
the fourth heat exchange unit comprises a fan and an air-cooled radiator.
7. The heating apparatus according to claim 1,
the heating unit includes an engine and a compressor.
8. The heating apparatus according to claim 1,
the condensing unit includes an expansion valve and a condenser.
9. The heating apparatus according to claim 1,
still include equipment shell, the unit of heating set up in inside the equipment shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810817330.8A CN110748947A (en) | 2018-07-24 | 2018-07-24 | Heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810817330.8A CN110748947A (en) | 2018-07-24 | 2018-07-24 | Heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110748947A true CN110748947A (en) | 2020-02-04 |
Family
ID=69275357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810817330.8A Pending CN110748947A (en) | 2018-07-24 | 2018-07-24 | Heating device |
Country Status (1)
| Country | Link |
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| CN (1) | CN110748947A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1459400A (en) * | 1973-04-18 | 1976-12-22 | Secr Defence | Air conditioning and cabin pressurising plant for aircraft |
| JPH074778A (en) * | 1993-06-16 | 1995-01-10 | Sanden Corp | Heat exchanger for engine heat pump |
| JPH1122551A (en) * | 1997-07-01 | 1999-01-26 | Yanmar Diesel Engine Co Ltd | Engine-driven heat pump device |
| CN105841390A (en) * | 2016-03-31 | 2016-08-10 | 山东省食品发酵工业研究设计院 | Gas-driven air source heat pump heat supply unit for central heating system |
| CN108224543A (en) * | 2018-02-22 | 2018-06-29 | 青岛宏科达机械科技有限公司 | A kind of UTILIZATION OF VESIDUAL HEAT IN, kinetic energy are converted into the heating heating equipment of thermal energy |
| CN207555726U (en) * | 2017-12-07 | 2018-06-29 | 青岛宏科达机械科技有限公司 | A kind of heating heating equipment |
-
2018
- 2018-07-24 CN CN201810817330.8A patent/CN110748947A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1459400A (en) * | 1973-04-18 | 1976-12-22 | Secr Defence | Air conditioning and cabin pressurising plant for aircraft |
| JPH074778A (en) * | 1993-06-16 | 1995-01-10 | Sanden Corp | Heat exchanger for engine heat pump |
| JPH1122551A (en) * | 1997-07-01 | 1999-01-26 | Yanmar Diesel Engine Co Ltd | Engine-driven heat pump device |
| CN105841390A (en) * | 2016-03-31 | 2016-08-10 | 山东省食品发酵工业研究设计院 | Gas-driven air source heat pump heat supply unit for central heating system |
| CN207555726U (en) * | 2017-12-07 | 2018-06-29 | 青岛宏科达机械科技有限公司 | A kind of heating heating equipment |
| CN108224543A (en) * | 2018-02-22 | 2018-06-29 | 青岛宏科达机械科技有限公司 | A kind of UTILIZATION OF VESIDUAL HEAT IN, kinetic energy are converted into the heating heating equipment of thermal energy |
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Application publication date: 20200204 |