CN103697628B - The hybrid heat-obtaining heat pump of mine air-lack waste heat - Google Patents
The hybrid heat-obtaining heat pump of mine air-lack waste heat Download PDFInfo
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- CN103697628B CN103697628B CN201310703758.7A CN201310703758A CN103697628B CN 103697628 B CN103697628 B CN 103697628B CN 201310703758 A CN201310703758 A CN 201310703758A CN 103697628 B CN103697628 B CN 103697628B
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- 239000002918 waste heat Substances 0.000 title claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000007921 spray Substances 0.000 claims abstract description 31
- 230000008676 import Effects 0.000 claims abstract description 22
- 238000004891 communication Methods 0.000 claims description 12
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 10
- 239000010802 sludge Substances 0.000 claims description 10
- 230000001939 inductive effect Effects 0.000 claims description 9
- 230000014759 maintenance of location Effects 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 7
- 239000008400 supply water Substances 0.000 claims description 7
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 239000012736 aqueous medium Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 239000002609 medium Substances 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010025 steaming Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 241001314440 Triphora trianthophoros Species 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
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- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The hybrid heat-obtaining heat pump of mine air-lack waste heat, including weary wind Heat Room, weary wind passage is installed in weary wind Heat Room, the collecting-tank being installed below open top of weary wind passage, the surface of collecting-tank is provided with spray pipe network, the water inlet of spray pipe network connects with collecting-tank via the spray intake pipe being in series with circulated sprinkling pump, the air inlet of weary wind passage is via air channel and mine return air arterial highway outlet, the rear side being positioned at collecting-tank in weary wind passage is provided with the weary wind heat exchanger of direct-evaporation-type, the air outlet of weary wind passage communicates with the external world, the heat exchanging pipe outlet of weary wind heat exchanger connects with the one adapter mouth of right cross valve via transfer pipeline, the import of the heat exchanging pipe of weary wind heat exchanger is via the outlet of connecting line Yu the heat exchanging pipe of right package full-liquid type condenser/evaporator.Its object is to provide a kind of operation windage little, energy consumption is low, and the thermal efficiency is high, can save mass energy, reduces the hybrid heat-obtaining heat pump of mine air-lack waste heat of environmental pollution.
Description
Technical field
The present invention relates to a kind of hybrid heat-obtaining heat pump of mine air-lack waste heat.
Background technology
To mine air-lack UTILIZATION OF VESIDUAL HEAT IN, original technology has technology path two kinds different, first fountain heat-obtaining, the defect that fountain heat-obtaining exists water blocking, heat-obtaining amount is little, and weary wind just cannot heat-obtaining below 12 DEG C；It two is direct steaming type heat-obtaining, though direct steaming type heat-obtaining heat-obtaining amount is big, but owing to being mixed with more dust in weary wind, there is the problem that weary wind heat exchanger is easily blocked in running, and the wind resistance causing weary wind heat exchanger is bigger.Additionally, for 30～40dB (A) noise eliminating mine return air main frame, existing weary wind heat-obtaining device all arranges deafener, thus also can increase windage further, cause that energy consumption increases.
Summary of the invention
It is an object of the invention to provide a kind of operation windage little, energy consumption is low, and the thermal efficiency is high, can save mass energy, reduces the hybrid heat-obtaining heat pump of mine air-lack waste heat of environmental pollution.
The hybrid heat-obtaining heat pump of mine air-lack waste heat of the present invention, including weary wind Heat Room, weary wind passage it is provided with in weary wind Heat Room, the collecting-tank being connected with open top of weary wind channel middle, the surface of collecting-tank is provided with spray pipe network, spray pipe network is provided with multiple shower nozzle that can spray water downwards, the water inlet of spray pipe network connects with collecting-tank via the spray intake pipe being in series with circulated sprinkling pump, the air inlet of described weary wind passage is via the outlet in air channel Yu mine return air arterial highway, the rear side being positioned at collecting-tank in weary wind passage is provided with the weary wind heat exchanger of direct-evaporation-type, the air outlet of weary wind passage communicates with the external world, the outlet of the heat exchanging pipe of described weary wind heat exchanger connects with the one adapter mouth of right cross valve via transfer pipeline, the import of the heat exchanging pipe of weary wind heat exchanger is via the outlet of connecting line Yu the heat exchanging pipe of right package full-liquid type condenser/evaporator, the import of the heat exchanging pipe of right package full-liquid type condenser/evaporator connects with another adapter mouth of right cross valve via pipeline, the another adapter mouth of right cross valve is via the outlet of pipeline Yu right compressor, another adapter mouth of right cross valve is via the inlet communication of pipeline Yu right compressor；The inlet communication of the bottom of described collecting-tank and sludge water water source heat pump water-fetching pipe, the middle part of sludge water water source heat pump water-fetching pipe is in series with mud water pump, the outlet of sludge water water source heat pump water-fetching pipe connects with the top of the box evaporative condenser of mud, the box evaporative condenser of mud connects with described collecting-tank via mud water resource heat pump return pipe, the box evaporative condenser of mud is positioned at the lower section of described collecting-tank, the bottom of the box evaporative condenser of mud and the inlet communication of blow-off pipe, the middle part of blow-off pipe is in series with blowoff valve, the outlet of blow-off pipe connects with mud sump, mud sump is positioned at the lower section of the box evaporative condenser of described mud；The outlet of the heat exchanging pipe of the box evaporative condenser of described mud is via the inlet communication of heat exchanging pipe of the pipeline Yu left housing pipe full-liquid type condenser/evaporator that are in series with left two-way heating power reversal valve, and exporting of the heat exchanging pipe of left housing pipe full-liquid type condenser/evaporator utilizes pipeline connection with the import of the heat exchanging pipe of the outlet of left compressor, the import of left compressor and the box evaporative condenser of described mud respectively via left cross valve；The outlet of described left housing pipe full-liquid type condenser/evaporator and the outlet of described right package full-liquid type condenser/evaporator are respectively via pipeline and heat supply cross current, the water return outlet of left housing pipe full-liquid type condenser/evaporator connects with return pipe via pipeline respectively with the water return outlet of described right package full-liquid type condenser/evaporator, return pipe or be in series with water circulating pump on described heat supply water pipe.
The hybrid heat-obtaining heat pump of mine air-lack waste heat of the present invention, the front of its spray pipe network is provided with deflector, and described connecting line is in series with right two-way heating power reversal valve.
The hybrid heat-obtaining heat pump of mine air-lack waste heat of the present invention, its weary wind Heat Room be connected with heat pump main equipment room, the box evaporative condenser of described mud, described left housing pipe full-liquid type condenser/evaporator, described right package full-liquid type condenser/evaporator, described left compressor, described right compressor, described water circulating pump and described mud water pump are arranged in heat pump main equipment room.
The hybrid heat-obtaining heat pump of mine air-lack waste heat of the present invention, its air channel includes air inducing elbow section and retention tower, the outlet of air inducing elbow section connects with the air inlet of described weary wind Heat Room, the import of air inducing elbow section and the outlet of described retention tower, the outlet of the import of retention tower and the outlet of return air fan, the import of return air fan and described mine return air arterial highway.
The hybrid heat-obtaining heat pump of mine air-lack waste heat of the present invention, its mud sump is arranged on the lower section of described heat pump main equipment room.
The hybrid heat-obtaining heat pump of mine air-lack waste heat of the present invention, its spray pipe network is arranged on the top in weary wind passage, and spray pipe network is horizontally disposed.
The hybrid heat-obtaining heat pump of mine air-lack waste heat of the present invention, adopt two-stage heat-obtaining, its first order utilizes spray heat-obtaining to clean weary wind, create for rear class direct steaming type heat-obtaining and relatively clean weary wind, the second level utilizes the direct-evaporation-type deep enthalpy heat-obtaining of weary wind heat exchanger, the latent heat that first order moisture evaporates can be fetched completely with sensible heat in weary wind and latent heat, substantially increase the utilization rate of mine air-lack residual heat resources, and the 30-40dB noise of mine return air main frame can be eliminated, without arranging deafener, whole weary wind heat-obtaining system does not increase the resistance of return air main blower fan, it it is killing three birds with one stone, and the hybrid heat-obtaining of two-stage, high heat pump efficiency can be ensured.Therefore, the mine air-lack waste heat hybrid heat-obtaining heat pump operation windage of the present invention is little, and energy consumption is low, and the thermal efficiency is high, cost is low, can save mass energy, and operating cost is low, environmentally friendly, it is effectively reduced the pollution to environment, the economic benefit promoted the use of and social benefit are all extremely prominent.
Below in conjunction with drawings and Examples in detail the present invention is described in detail.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the hybrid heat-obtaining heat pump of mine air-lack waste heat of the present invention.
Detailed description of the invention
Referring to Fig. 1, the hybrid heat-obtaining heat pump of mine air-lack waste heat of the present invention, including weary wind Heat Room 5, be provided with in weary wind Heat Room 5 allow weary wind via weary wind passage 32, in weary wind passage 32, middle part is connected with open top, for collecting the collecting-tank 9 of the water sprayed above, the surface of collecting-tank 9 is provided with spray pipe network 6, spray pipe network 6 is provided with multiple shower nozzle that can spray water downwards, water under spray is when through weary wind passage 32, heat exchange can be carried out with weary wind, thus the heat energy in weary wind is extracted, and bring the heat energy extracted into collecting-tank 9, the water inlet of spray pipe network 6 connects with collecting-tank 9 via the spray intake pipe 8 being in series with circulated sprinkling pump 7, collecting-tank 9 constantly can be transported to spray pipe network 6 via spray intake pipe 8 and be circulated by circulated sprinkling pump 7, extract the heat energy in weary wind, and the dust in weary wind can be disposed, clean up weary wind, prevent the dust rearward movement blocking weary wind heat exchanger 12 of direct-evaporation-type in weary wind, energy consumption is caused to increase, the heat exchange efficiency avoiding the weary wind heat exchanger 12 of direct-evaporation-type sharply declines.
The air inlet of weary wind passage 32 is via the outlet in air channel Yu mine return air arterial highway 1, the rear side being positioned at collecting-tank 9 in weary wind passage 32 is provided with the weary wind heat exchanger 12 of direct-evaporation-type, the air outlet of weary wind passage 32 communicates with the external world, the outlet of the heat exchanging pipe of weary wind heat exchanger 12 connects with the one adapter mouth of right cross valve 22 via transfer pipeline 30, the import of the heat exchanging pipe of weary wind heat exchanger 12 is via the outlet of connecting line 31 with the heat exchanging pipe of right package full-liquid type condenser/evaporator 23, the import of the heat exchanging pipe of right package full-liquid type condenser/evaporator 23 connects with another adapter mouth of right cross valve 22 via pipeline, the another adapter mouth of right cross valve 22 is via the outlet of pipeline Yu right compressor 24, another adapter mouth of right cross valve 22 is via the inlet communication of pipeline Yu right compressor 24；In use, start right compressor 24, the heat energy that fluid media (medium) in the heat exchanging pipe of direct-evaporation-type weary wind heat exchanger 12 extracts just can be delivered in the heat exchanging pipe of right package full-liquid type condenser/evaporator 23 through right compressor 24 via right cross valve 22, fluid media (medium) in the heat exchanging pipe of this right package full-liquid type condenser/evaporator 23 transfers thermal energy to the aqueous medium in right package full-liquid type condenser/evaporator 23, and then heat energy is transferred out by the aqueous medium in right package full-liquid type condenser/evaporator 23 then through by heat supply water pipe 26.
The inlet communication of the bottom of collecting-tank 9 and sludge water water source heat pump water-fetching pipe 11, the middle part of sludge water water source heat pump water-fetching pipe 11 is in series with mud water pump 16, the outlet of sludge water water source heat pump water-fetching pipe 11 connects with the top of the box evaporative condenser 19 of mud, the box evaporative condenser 19 of mud connects with collecting-tank 9 via mud water resource heat pump return pipe 10, the box evaporative condenser 19 of mud is positioned at the lower section of collecting-tank 9, start mud water pump 16, the water with heat energy in collecting-tank 9 will be transported in the box evaporative condenser 19 of mud through sludge water water source heat pump water-fetching pipe 11, simultaneously original in the box evaporative condenser of mud 19, the water having be carried out heat exchange then can be back to collecting-tank 9 through return pipe 10.
The bottom of the box evaporative condenser 19 of mud and the inlet communication of blow-off pipe 21, the middle part of blow-off pipe 21 is in series with blowoff valve 20, and the outlet of blow-off pipe 21 connects with mud sump 29, and mud sump 29 is positioned at the lower section of the box evaporative condenser 19 of mud；When the bottom deposit of the box evaporative condenser of mud 19 has more silt, blowoff valve 20 can be opened, allow silt water flow into mud sump 29 through blow-off pipe 21.
The outlet of the heat exchanging pipe of the box evaporative condenser of mud 19 is via the inlet communication of heat exchanging pipe of the pipeline Yu left housing pipe full-liquid type condenser/evaporator 14 that are in series with left two-way heating power reversal valve 15, and exporting of the heat exchanging pipe of left housing pipe full-liquid type condenser/evaporator 14 utilizes pipeline connection with the import of the heat exchanging pipe of the outlet of left compressor 18, the import of left compressor 18 and the box evaporative condenser 19 of mud respectively via left cross valve 17；In use, start left compressor 18, fluid media (medium) in the heat exchanging pipe of the box evaporative condenser of mud 19 will by the box evaporative condenser of mud 19 from the heat energy extracted in the water of collecting-tank 9, it is transported in the heat exchanging pipe of left housing pipe full-liquid type condenser/evaporator 14 through left compressor 18, fluid media (medium) in the heat exchanging pipe of this left housing pipe full-liquid type condenser/evaporator 14 transfers thermal energy to the aqueous medium in left housing pipe full-liquid type condenser/evaporator 14, then heat energy is transferred out by the aqueous medium in left housing pipe full-liquid type condenser/evaporator 14 then through by heat supply water pipe 26.
The outlet of left housing pipe full-liquid type condenser/evaporator 14 connects with heat supply water pipe 26 via pipeline respectively with the outlet of right package full-liquid type condenser/evaporator 23, the water return outlet of left housing pipe full-liquid type condenser/evaporator 14 connects with return pipe 27 via pipeline respectively with the water return outlet of right package full-liquid type condenser/evaporator 23, return pipe 27 or be in series with water circulating pump 25 on heat supply water pipe 26.
The front of above-mentioned spray pipe network 6 is preferably provided with deflector 33, and connecting line 31 is in series with right two-way heating power reversal valve 13.
The lower section of above-mentioned weary wind Heat Room 5 is preferably provided with heat pump main equipment room 28, and the box evaporative condenser of mud 19, left housing pipe full-liquid type condenser/evaporator 14, right package full-liquid type condenser/evaporator 23, left compressor 18, right compressor 24, water circulating pump 25 and mud water pump 16 are arranged in heat pump main equipment room 28.Above-mentioned air channel includes air inducing elbow section 4 and retention tower 3, the outlet of air inducing elbow section 4 connects with the air inlet of weary wind Heat Room 5, the import of air inducing elbow section 4 and the outlet of retention tower 3, the outlet of the outlet of the import of retention tower 3 and return air fan 2, the import of return air fan 2 and mine return air arterial highway 1.Mud sump 29 is arranged on the lower section of heat pump main equipment room 28.Spray pipe network 6 is preferably mounted at the top in weary wind passage 32, and spray pipe network 6 is horizontally disposed.
The hybrid heat-obtaining heat pump of mine air-lack waste heat of the present invention, left cross valve 17, right cross valve 22 can be allowed in the winter time to commutate to duty in winter be operated, during the broiling summer, then left cross valve 17, right cross valve 22 can be allowed to commutate to summer operation state be operated.Owing to being the air feed via flood tide heat resource heating coal mine air intake arterial highway continuous, stable in the weary wind extracted in mine return air arterial highway out, it is not necessary to use the extra energy.Therefore, the hybrid heat-obtaining heat pump of mine air-lack waste heat of the present invention can save mass energy, and operating cost is low, environmentally friendly, is effectively reduced the pollution to environment.
Claims (6)
1. the hybrid heat-obtaining heat pump of mine air-lack waste heat, it is characterized in that: include weary wind Heat Room (5), weary wind passage (32) it is provided with in weary wind Heat Room (5), the collecting-tank (9) being connected with open top in weary wind passage (32), the surface of collecting-tank (9) is provided with spray pipe network (6), spray pipe network (6) is provided with multiple shower nozzle that can spray water downwards, the water inlet of spray pipe network (6) connects with collecting-tank (9) via the spray intake pipe (8) being in series with circulated sprinkling pump (7), the air inlet of described weary wind passage (32) is via the outlet in air channel Yu mine return air arterial highway (1), the rear side being positioned at collecting-tank (9) in weary wind passage (32) is provided with the weary wind heat exchanger (12) of direct-evaporation-type, the air outlet of weary wind passage (32) communicates with the external world, the outlet of the heat exchanging pipe of described weary wind heat exchanger (12) connects with the one adapter mouth of right cross valve (22) via transfer pipeline (30), the import of the heat exchanging pipe of weary wind heat exchanger (12) is via the outlet of connecting line (31) Yu the heat exchanging pipe of right package full-liquid type condenser/evaporator (23), the import of the heat exchanging pipe of right package full-liquid type condenser/evaporator (23) connects with another adapter mouth of right cross valve (22) via pipeline, the another adapter mouth of right cross valve (22) is via the outlet of pipeline Yu right compressor (24), another adapter mouth of right cross valve (22) is via the inlet communication of pipeline Yu right compressor (24)；The inlet communication of the bottom of described collecting-tank (9) and sludge water water source heat pump water-fetching pipe (11), the middle part of sludge water water source heat pump water-fetching pipe (11) is in series with mud water pump (16), the outlet of sludge water water source heat pump water-fetching pipe (11) connects with the top of the box evaporative condenser of mud (19), the box evaporative condenser of mud (19) connects with described collecting-tank (9) via mud water resource heat pump return pipe (10), the box evaporative condenser of mud (19) is positioned at the lower section of collecting-tank (9), the inlet communication of the bottom of the box evaporative condenser of mud (19) and blow-off pipe (21), the middle part of blow-off pipe (21) is in series with blowoff valve (20), the outlet of blow-off pipe (21) connects with mud sump (29), mud sump (29) is positioned at the lower section of the box evaporative condenser of described mud (19)；The outlet of the heat exchanging pipe of the box evaporative condenser of described mud (19) is via the inlet communication of the heat exchanging pipe of the pipeline Yu left housing pipe full-liquid type condenser/evaporator (14) that are in series with left two-way heating power reversal valve (15), and the outlet of the heat exchanging pipe of left housing pipe full-liquid type condenser/evaporator (14) utilizes pipeline connection with the import of the heat exchanging pipe of the outlet of left compressor (18), the import of left compressor (18) and the box evaporative condenser of described mud (19) respectively via left cross valve (17)；The outlet of described left housing pipe full-liquid type condenser/evaporator (14) connects with heat supply water pipe (26) via pipeline respectively with the outlet of described right package full-liquid type condenser/evaporator (23), the water return outlet of left housing pipe full-liquid type condenser/evaporator (14) connects with return pipe (27) via pipeline respectively with the water return outlet of described right package full-liquid type condenser/evaporator (23), return pipe (27) or be in series with water circulating pump (25) on described heat supply water pipe (26).
2. the hybrid heat-obtaining heat pump of mine air-lack waste heat as claimed in claim 1, it is characterized in that: the front of described spray pipe network (6) is provided with deflector (33), described connecting line (31) is in series with right two-way heating power reversal valve (13).
3. the hybrid heat-obtaining heat pump of mine air-lack waste heat as claimed in claim 2, it is characterized in that: described weary wind Heat Room (5) be connected with heat pump main equipment room (28), the box evaporative condenser of described mud (19), described left housing pipe full-liquid type condenser/evaporator (14), described right package full-liquid type condenser/evaporator (23), described left compressor (18), described right compressor (24), described water circulating pump (25) and described mud water pump (16) are arranged in heat pump main equipment room (28).
4. the hybrid heat-obtaining heat pump of mine air-lack waste heat as claimed in claim 3, it is characterized in that: described air channel includes air inducing elbow section (4) and retention tower (3), the outlet of air inducing elbow section (4) connects with the air inlet of described weary wind Heat Room (5), the outlet of the import of air inducing elbow section (4) and described retention tower (3), the outlet of the outlet of the import of retention tower (3) and return air fan (2), the import of return air fan (2) and described mine return air arterial highway (1).
5. the hybrid heat-obtaining heat pump of mine air-lack waste heat as claimed in claim 4, is characterized in that: described mud sump (29) is arranged on the lower section of described heat pump main equipment room (28).
6. the hybrid heat-obtaining heat pump of mine air-lack waste heat as claimed in claim 5, is characterized in that: described spray pipe network (6) is arranged on the top in weary wind passage (32), and spray pipe network (6) is horizontally disposed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310703758.7A CN103697628B (en) | 2013-12-19 | 2013-12-19 | The hybrid heat-obtaining heat pump of mine air-lack waste heat |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310703758.7A CN103697628B (en) | 2013-12-19 | 2013-12-19 | The hybrid heat-obtaining heat pump of mine air-lack waste heat |
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| CN103697628A CN103697628A (en) | 2014-04-02 |
| CN103697628B true CN103697628B (en) | 2016-06-29 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197586B (en) * | 2014-09-17 | 2016-08-24 | 济南国海能源科技有限公司 | The efficient weary air-cooled warm heat pumping system of a kind of straight steaming |
| CN104504981B (en) * | 2014-11-27 | 2016-09-14 | 河北工程大学 | Mine exhaust air waste heat recovery experimental platform |
| CN106440355A (en) * | 2016-11-28 | 2017-02-22 | 山西文龙中美环能科技股份有限公司 | Efficient ventilation air methane source heat pump system |
| CN107837629A (en) * | 2017-12-12 | 2018-03-27 | 山东宜美科节能服务有限责任公司 | Low idle air temperature mine air-lack waste heat extraction system |
| CN110107332B (en) * | 2019-06-11 | 2024-09-20 | 中国矿业大学 | A system and method for preventing freezing of inlet air flow in a mine with low wind resistance by extracting heat from exhaust air |
| CN112013698B (en) * | 2020-09-04 | 2021-09-21 | 河北工程大学 | Air supply heating equipment based on coal mine waste heat of airing exhaust |
| CN114483239B (en) * | 2022-02-09 | 2024-07-09 | 太原理工大学 | Comprehensive utilization method of mine ventilation energy |
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| CN200971787Y (en) * | 2006-10-23 | 2007-11-07 | 兖矿新陆建设发展有限公司 | Cold-air preparation device of mine working face temp. lowering system |
| CN201381870Y (en) * | 2009-04-16 | 2010-01-13 | 权犇 | Device for fully recycling return air residual heat in mine |
| RU2405112C1 (en) * | 2009-10-08 | 2010-11-27 | Открытое Акционерное Общество "Уральский Научно-Исследовательский И Проектный Институт Галургии" (Оао "Галургия") | Recirculation ventilation installation |
| CN102518461B (en) * | 2011-12-02 | 2013-08-21 | 清华大学 | Coal mine low-post secondary heat energy resource comprehension utilization system |
| CN203629142U (en) * | 2013-12-19 | 2014-06-04 | 北京中矿博能节能科技有限公司 | Mine methane waste heat mixed type heat collecting heat pump system |
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