CN204923561U - Gas cool and thermal power trigeminy supplies system and liquefied natural gas refrigerating system coupling energy supply system - Google Patents
Gas cool and thermal power trigeminy supplies system and liquefied natural gas refrigerating system coupling energy supply system Download PDFInfo
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- CN204923561U CN204923561U CN201520583450.8U CN201520583450U CN204923561U CN 204923561 U CN204923561 U CN 204923561U CN 201520583450 U CN201520583450 U CN 201520583450U CN 204923561 U CN204923561 U CN 204923561U
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
The utility model provides a gas cool and thermal power trigeminy supplies system and liquefied natural gas refrigerating system coupling energy supply system, liquefied natural gas storage jar loops through the liquefied natural gas pump and first governing valve is connected with the one -level heat exchanger, and liquefied natural gas gasifies for the gaseous state after electric T -shaped valve falls into two the tunnel after one -level heat exchanger and the heat transfer of refrigerant R22, is connected with gas turbine generator through first pressure regulating box all the way, and another way is connected through second pressure regulating box and lithium bromide direct combustion machine, gas turbine generator high temperature flue gas pipe, high temperature cylinder liner outlet pipe and high temperature cylinder liner wet return and lithium bromide direct combustion machine parallel connection, the beneficial effects of the utility model are that: in the large -scale public building project of the place of no municipal gas pipe network construction, be used for provide refrigeration duty through the refrigerated water of preparing the liquefied natural gas cold energy and the refrigerated water mixture that lithium bromide unit prepared summer, and independently undertaken by liquefied natural gas refrigerating system and need cold -zone territory refrigeration duty winter, further strengthens energy supply flexibility, energy -conservation nature, saves refrigeration plant's investment.
Description
Technical field
The utility model relates to a kind of combustion gas combined supply system, cold energy of liquefied natural gas refrigeration system, the coupling function system of espespecially a kind of combustion gas cold, heat and power triple supply system and refrigerating liquefied gas system.
Background technology
Combustion gas combined supply system: natural gas first generates electricity through gas internal combustion electric generator, then gas internal combustion electric generator waste heat is utilized directly to promote lithium bromide direct combustion unit cooling, heat supply, a kind of by the cascade utilization to natural gas energy resource, hot and cold, electric co-feeding system is provided simultaneously, this cold, heat and electricity triple supply mode can improve the utilization ratio of the energy significantly, and has the features such as technological process is simple, energy supply is flexible, safe and reliable.
LNG cold supply system: by transferring on certain refrigerating medium by LNG cold energy, recycling refrigerating medium cools water, and produce chilled water cooling, this mode can make full use of LNG cold energy, is significant for the target realizing energy-saving and emission-reduction.
In practical situations both, in the place planning construction large public building project without municipal gas ductwork, there is subregion and have annual refrigeration duty demand in project, if in a long time still without the possibility of municipal pipeline air feed, liquefied natural gas (LNG) is used to be than better suited, in prior art, also the energy supplying system that LNG cold energy use and combustion gas cold, heat and power triple supply system are coupled is not used for meeting the cold of this intermediate item, heat, electrical load requirement, the chilled water that summer is produced by the chilled water produced by LNG cold energy and lithium bromide chiller carries out being mixed for providing refrigeration duty, winter is independently born by LNG cold supply system and needs cool region refrigeration duty, further reinforcement energy supply flexibility, energy saving, save the investment of refrigeration plant.
Utility model content
The purpose of this utility model is to provide a kind of combustion gas cold, heat and power triple supply system and refrigerating liquefied gas system, coupled energy supplying system, cold energy of liquefied natural gas be used for producing cold after be converted into gaseous state, liquefied natural gas after gasification is through pressure regulation, the direct gas internal combustion electric generator in combustion gas combined supply system and the lithium bromide direct combustion machine of supplying is for generating electricity, freezing, heat, and the chilled water that the chilled water produced by cold energy of liquefied natural gas and lithium bromide chiller are produced carries out being mixed for providing refrigeration duty.Complemented one another by these two kinds of energy-provision way, strengthen energy supply flexibility, energy saving further, save cooling installation and investment.
For achieving the above object, the technical scheme that the utility model adopts is:
A kind of combustion gas cold, heat and power triple supply system and refrigerating liquefied gas system, coupled energy supplying system, it includes jet dynamic control (S-1) and the lithium bromide direct combustion machine (S-2) of combustion gas combined supply system; The liquefied natural gas storage tanks (S-3) of refrigerating liquefied gas system, first-class heat exchanger (S-4) and secondary heat exchanger (S-5); Also include: water knockout drum (S-6), water collector (S-7), is characterized in that:
Described liquefied natural gas storage tank (S-3) is connected with first-class heat exchanger (S-4) with the first control valve (S-13) by liquefied natural gas pump (S-8) successively, liquefied natural gas is after first-class heat exchanger (S-4) with cold-producing medium R22 heat exchange, gasification is divided into two-way for gaseous natural gas through electric T-shaped valve (S-16), one tunnel is connected with jet dynamic control (S-1) through the first pressure regulating box (S-11), and another road second pressure regulating box (S-12) is connected with lithium bromide direct combustion machine (S-2); The high-temperature flue gas pipe (S-24) of jet dynamic control (S-1), high temperature cylinder sleeve outlet pipe (S-25) and high temperature cylinder sleeve return pipe (S-26) and lithium bromide direct combustion machine (S-2) are connected in parallel, and for refrigeration, heat; High temperature cylinder sleeve outlet pipe (S-25) is in series with high temperature jacket water circulating pump (S-17).
Wherein, described lithium bromide direct combustion machine (S-2) is connected with needing thermal region, the warm water (55 DEG C) that lithium bromide direct combustion machine (S-2) is produced returns lithium bromide direct combustion machine (S-2) after needing the heat exchange of thermal region end, return water temperature (45 DEG C), lithium bromide direct combustion machine (S-2) and need the feed pipe between thermal region to be in series with the 3rd control valve (S-22) and Warm water circulation pump (S-21), at lithium bromide direct combustion machine (S-2) and need the return pipe between thermal region to be in series with the 4th control valve (S-23).
Wherein, cold is passed to cold-producing medium R22 by first-class heat exchanger (S-4) by liquefied natural gas, then cold is passed to chilled water by secondary heat exchanger (S-5) by cold-producing medium R22, is in series with cold-producing medium R22 pump (S-9) and the second control valve (S-14) between first-class heat exchanger (S-4) and secondary heat exchanger (S-5); Tube connector between secondary heat exchanger (S-5) and water knockout drum (S-6) is in series with the first chilled water Primary pumps (S-10), after cooling, the chilled water of (7 DEG C) is transported to water knockout drum (S-6) by the first chilled water Primary pumps (S-10), water knockout drum (S-6) and need to be connected with chilled water secondary pump (S-18) between cool region, to be transported to chilled water by chilled water secondary pump (S-18) and to need cool region to freeze; Chilled water backwater (12 DEG C) after needing the heat exchange of cool region end imports water collector (S-7) and connects by pipeline (S-27) iterative cycles that secondary heat exchanger (S-5) realizes chilled water afterwards; The 5th control valve (S-19) place closed condition between lithium bromide direct combustion machine (S-2) and water knockout drum (S-6), the second chilled water Primary pumps (S-12) is in stopped status; The 6th control valve (S-20) between water collector (S-7) and lithium bromide direct combustion machine (S-2) is in closed condition.
Wherein, cold is passed to cold-producing medium R22 by first-class heat exchanger (S-4) by liquefied natural gas, then cold is passed to chilled water by secondary heat exchanger (S-5) by cold-producing medium R22, is in series with cold-producing medium R22 pump (S-9) and the second control valve (S-14) between first-class heat exchanger (S-4) and secondary heat exchanger (S-5), tube connector between secondary heat exchanger (S-5) and water knockout drum (S-6) is in series with the first chilled water Primary pumps (S-10), after cooling, the chilled water of (7 DEG C) is transported to water knockout drum (S-6) by the first chilled water Primary pumps (S-10), the 5th control valve (S-19) and the second chilled water Primary pumps (S-12) is in series with between lithium bromide direct combustion machine (S-2) and water knockout drum (S-6), after the chilled water (7 DEG C) that lithium bromide direct combustion machine (S-2) is produced enters the middle mixing of water knockout drum (S-6) by the 5th control valve (S-19) and the second chilled water Primary pumps (S-12), unified being transported to by chilled water secondary pump (S-18) needs cool region to freeze, at water knockout drum (S-6) and need to be connected with chilled water secondary pump (S-18) between cool region, get back to lithium bromide direct combustion machine (S-2) respectively by the 6th control valve (S-20) after chilled water backwater (12 DEG C) after needing the heat exchange of cool region end imports water collector (S-7) and realized the iterative cycles of chilled water by the secondary heat exchanger (S-5) that refrigerating liquefied gas system got back to by pipeline (S-27), between lithium bromide direct combustion machine (S-2) and water collector (S-7), being connected with the 6th control valve (S-20).
Wherein, between water knockout drum (S-6) and water collector (S-7), differential pressure balancing valve (S-15) is provided with.
The beneficial effects of the utility model are: in the place planning construction large public building project without municipal gas ductwork, there is subregion and have annual refrigeration duty demand in project, the chilled water that summer is produced by the chilled water produced by LNG cold energy and lithium bromide chiller carries out being mixed for providing refrigeration duty, winter is independently born by LNG cold supply system and needs cool region refrigeration duty, further reinforcement energy supply flexibility, energy saving, save the investment of refrigeration plant.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing 1 and detailed description of the invention, the utility model is described in detail.
As shown in Figure 1: a kind of combustion gas cold, heat and power triple supply system and refrigerating liquefied gas system, coupled energy supplying system, it includes jet dynamic control S-1 and the lithium bromide direct combustion machine S-2 of combustion gas combined supply system; Liquefied natural gas storage tanks S-3, the first-class heat exchanger S-4 of refrigerating liquefied gas system and secondary heat exchanger S-5; Also include: water knockout drum S-6, water collector S-7;
Described liquefied natural gas storage tank S-3 is connected with first-class heat exchanger S-4 with the first control valve S-13 by liquefied natural gas pump S-8 successively, liquefied natural gas is after first-class heat exchanger S-4 and cold-producing medium R22 heat exchange, gasification is divided into two-way for gaseous natural gas through electric T-shaped valve S-16, one tunnel is connected with jet dynamic control S-1 through the first pressure regulating box S-11, and another road second pressure regulating box S-12 is connected with lithium bromide direct combustion machine S-2; High-temperature flue gas pipe S-24, the high temperature cylinder sleeve outlet pipe S-25 of jet dynamic control S-1 and high temperature cylinder sleeve return pipe S-26 and lithium bromide direct combustion machine S-2 are connected in parallel, and for refrigeration, heat; High temperature cylinder sleeve outlet pipe S-25 is in series with high temperature jacket water circulating pump S-17.
The utility model supplies the working method under thermal condition in the winter time:
Described lithium bromide direct combustion machine S-2 is connected with needing thermal region, the warm water (55 DEG C) that lithium bromide direct combustion machine S-2 produces returns lithium bromide direct combustion machine S-2 after needing the heat exchange of thermal region end, return water temperature (45 DEG C), lithium bromide direct combustion machine S-2 and need the feed pipe between thermal region to be in series with the 3rd control valve S-22 and Warm water circulation pump S-21, at lithium bromide direct combustion machine S-2 and need the return pipe between thermal region to be in series with the 4th control valve S-23.
The working method of the utility model in the winter time under cooling operating mode:
Cold is passed to cold-producing medium R22 by first-class heat exchanger S-4 by liquefied natural gas, then cold is passed to chilled water by secondary heat exchanger S-5 by cold-producing medium R22, is in series with cold-producing medium R22 pump S-9 and the second control valve S-14 between first-class heat exchanger S-4 and secondary heat exchanger S-5; Tube connector between secondary heat exchanger S-5 and water knockout drum S-6 is in series with the first chilled water Primary pumps S-10, after cooling, the chilled water of (7 DEG C) is transported to water knockout drum S-6 by the first chilled water Primary pumps S-10, water knockout drum S-6 and need to be connected with chilled water secondary pump S-18 between cool region, to be transported to chilled water by chilled water secondary pump S-18 and to need cool region to freeze; Connect by pipeline S-27 the iterative cycles that secondary heat exchanger S-5 realizes chilled water after chilled water backwater (12 DEG C) after needing the heat exchange of cool region end imports water collector S-7; The 5th control valve S-19 place closed condition between lithium bromide direct combustion machine S-2 and water knockout drum S-6, the second chilled water Primary pumps S-12 is in stopped status; The 6th control valve S-20 between water collector S-7 and lithium bromide direct combustion machine S-2 is in closed condition.
Wherein, between water knockout drum S-6 and water collector S-7, differential pressure balancing valve S-15 is provided with.
The working method of the utility model under summer cooling operating mode:
Wherein, cold is passed to cold-producing medium R22 by first-class heat exchanger S-4 by liquefied natural gas, then cold is passed to chilled water by secondary heat exchanger S-5 by cold-producing medium R22, is in series with cold-producing medium R22 pump S-9 and the second control valve S-14 between first-class heat exchanger S-4 and secondary heat exchanger S-5, tube connector between secondary heat exchanger S-5 and water knockout drum S-6 is in series with the first chilled water Primary pumps S-10, after cooling, the chilled water of (7 DEG C) is transported to water knockout drum S-6 by the first chilled water Primary pumps S-10, the 5th control valve S-19 and the second chilled water Primary pumps S-12 is in series with between lithium bromide direct combustion machine S-2 and water knockout drum S-6, after the chilled water (7 DEG C) that lithium bromide direct combustion machine S-2 produces to enter in water knockout drum S-6 mixing by the 5th control valve S-19 and the second chilled water Primary pumps S-12, unified being transported to by chilled water secondary pump S-18 needs cool region to freeze, at water knockout drum S-6 and need to be connected with chilled water secondary pump S-18 between cool region, respectively by the iterative cycles that the 6th control valve S-20 gets back to lithium bromide direct combustion machine S-2 and realizes chilled water by the secondary heat exchanger S-5 that pipeline S-27 gets back to refrigerating liquefied gas system after chilled water backwater (12 DEG C) after needing the heat exchange of cool region end imports water collector S-7, between lithium bromide direct combustion machine S-2 and water collector S-7, be connected with the 6th control valve S-20.
Wherein, between water knockout drum S-6 and water collector S-7, differential pressure balancing valve S-15 is provided with.
Due in the place planning construction large public building project without municipal gas ductwork, there is subregion and have annual refrigeration duty demand in project, if in a long time still without the possibility of municipal pipeline air feed, LNG is used to be than better suited, co-feeding system of the present utility model is when actual motion, the chilled water that summer is produced by the chilled water produced by LNG cold energy and lithium bromide chiller carries out being mixed for providing refrigeration duty, winter is independently born by LNG cold supply system and needs cool region refrigeration duty, complemented one another by these two kinds of energy-provision way, further reinforcement energy supply flexibility, energy saving, save cooling installation and investment.
Allly all belong to the utility model protection domain in above-mentioned partly or entirely similar, similar or approximate Operation system setting; the any amendment made within design philosophy of the present utility model and principle, equivalent replacement, improvement etc., also all should be included within protection domain of the present utility model.
Claims (5)
1. combustion gas cold, heat and power triple supply system and a refrigerating liquefied gas system, coupled energy supplying system, it includes jet dynamic control (S-1) and the lithium bromide direct combustion machine (S-2) of combustion gas combined supply system; The liquefied natural gas storage tanks (S-3) of refrigerating liquefied gas system, first-class heat exchanger (S-4) and secondary heat exchanger (S-5); Also include: water knockout drum (S-6), water collector (S-7), is characterized in that:
Described liquefied natural gas storage tank (S-3) is connected with first-class heat exchanger (S-4) with the first control valve (S-13) by liquefied natural gas pump (S-8) successively, liquefied natural gas is after first-class heat exchanger (S-4) with cold-producing medium R22 heat exchange, gasification is divided into two-way for gaseous natural gas through electric T-shaped valve (S-16), one tunnel is connected with jet dynamic control (S-1) through the first pressure regulating box (S-11), and another road second pressure regulating box (S-12) is connected with lithium bromide direct combustion machine (S-2); The high-temperature flue gas pipe (S-24) of jet dynamic control (S-1), high temperature cylinder sleeve outlet pipe (S-25) and high temperature cylinder sleeve return pipe (S-26) and lithium bromide direct combustion machine (S-2) are connected in parallel, and high temperature cylinder sleeve outlet pipe (S-25) is in series with high temperature jacket water circulating pump (S-17).
2. combustion gas cold, heat and power triple supply system as claimed in claim 1 and refrigerating liquefied gas system, coupled energy supplying system, it is characterized in that: described lithium bromide direct combustion machine (S-2) is connected with needing thermal region, the warm water that lithium bromide direct combustion machine (S-2) is produced returns lithium bromide direct combustion machine (S-2) after needing the heat exchange of thermal region end, lithium bromide direct combustion machine (S-2) and need the feed pipe between thermal region to be in series with the 3rd control valve (S-22) and Warm water circulation pump (S-21), at lithium bromide direct combustion machine (S-2) and need the return pipe between thermal region to be in series with the 4th control valve (S-23).
3. combustion gas cold, heat and power triple supply system as claimed in claim 1 and refrigerating liquefied gas system, coupled energy supplying system, it is characterized in that: cold is passed to cold-producing medium R22 by first-class heat exchanger (S-4) by liquefied natural gas, then cold is passed to chilled water by secondary heat exchanger (S-5) by cold-producing medium R22, is in series with cold-producing medium R22 pump (S-9) and the second control valve (S-14) between first-class heat exchanger (S-4) and secondary heat exchanger (S-5); Tube connector between secondary heat exchanger (S-5) and water knockout drum (S-6) is in series with the first chilled water Primary pumps (S-10), chilled water after cooling is transported to water knockout drum (S-6) by the first chilled water Primary pumps (S-10), water knockout drum (S-6) and need to be connected with chilled water secondary pump (S-18) between cool region, to be transported to chilled water by chilled water secondary pump (S-18) and to need cool region to freeze; Chilled water backwater after needing the heat exchange of cool region end imports water collector (S-7) and connects by pipeline (S-27) iterative cycles that secondary heat exchanger (S-5) realizes chilled water afterwards; The 5th control valve (S-19) place closed condition between lithium bromide direct combustion machine (S-2) and water knockout drum (S-6), the second chilled water Primary pumps (S-12) is in stopped status; The 6th control valve (S-20) between water collector (S-7) and lithium bromide direct combustion machine (S-2) is in closed condition.
4. combustion gas cold, heat and power triple supply system as claimed in claim 1 and refrigerating liquefied gas system, coupled energy supplying system, it is characterized in that: cold is passed to cold-producing medium R22 by first-class heat exchanger (S-4) by liquefied natural gas, then cold is passed to chilled water by secondary heat exchanger (S-5) by cold-producing medium R22, is in series with cold-producing medium R22 pump (S-9) and the second control valve (S-14) between first-class heat exchanger (S-4) and secondary heat exchanger (S-5), tube connector between secondary heat exchanger (S-5) and water knockout drum (S-6) is in series with the first chilled water Primary pumps (S-10), chilled water after cooling is transported to water knockout drum (S-6) by the first chilled water Primary pumps (S-10), the 5th control valve (S-19) and the second chilled water Primary pumps (S-12) is in series with between lithium bromide direct combustion machine (S-2) and water knockout drum (S-6), after the chilled water that lithium bromide direct combustion machine (S-2) is produced enters the middle mixing of water knockout drum (S-6) by the 5th control valve (S-19) and the second chilled water Primary pumps (S-12), unified being transported to by chilled water secondary pump (S-18) needs cool region to freeze, at water knockout drum (S-6) and need to be connected with chilled water secondary pump (S-18) between cool region, get back to lithium bromide direct combustion machine (S-2) respectively by the 6th control valve (S-20) after chilled water backwater after needing the heat exchange of cool region end imports water collector (S-7) and realized the iterative cycles of chilled water by the secondary heat exchanger (S-5) that refrigerating liquefied gas system got back to by pipeline (S-27), between lithium bromide direct combustion machine (S-2) and water collector (S-7), being connected with the 6th control valve (S-20).
5. the combustion gas cold, heat and power triple supply system as described in claim 3 or 4 and refrigerating liquefied gas system, coupled energy supplying system, is characterized in that: between water knockout drum (S-6) and water collector (S-7), be provided with differential pressure balancing valve (S-15).
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| CN201520583450.8U CN204923561U (en) | 2015-08-05 | 2015-08-05 | Gas cool and thermal power trigeminy supplies system and liquefied natural gas refrigerating system coupling energy supply system |
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| CN201520583450.8U CN204923561U (en) | 2015-08-05 | 2015-08-05 | Gas cool and thermal power trigeminy supplies system and liquefied natural gas refrigerating system coupling energy supply system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105715518A (en) * | 2016-01-26 | 2016-06-29 | 云南电网有限责任公司电力科学研究院 | Heating-electric-cooling tri generation device with cold supply in summer and heat supply in winter and method |
| CN105969438A (en) * | 2016-05-18 | 2016-09-28 | 辽宁石油化工大学 | Marginal gas field natural gas pretreatment method based on cooling-heating-power cogeneration |
| CN107143435A (en) * | 2017-06-22 | 2017-09-08 | 江苏科技大学海洋装备研究院 | The distributed energy resource system and method for work of a kind of LNG Power Vessels |
| CN107748495A (en) * | 2017-09-18 | 2018-03-02 | 同济大学 | A kind of Optimal Configuration Method of distributed triple-generation and heat pump combined system |
| CN108224646A (en) * | 2018-02-28 | 2018-06-29 | 永固工程技术(江苏)有限公司 | New hospital energy conserving system |
| CN110671840A (en) * | 2019-10-10 | 2020-01-10 | 北京建筑大学 | Heat, power and cold combined supply system based on liquefied natural gas gasification cold energy and operation method |
| CN110985202A (en) * | 2019-11-24 | 2020-04-10 | 中煤科工集团重庆研究院有限公司 | Cold, heat and electricity triple supply system based on low-concentration gas |
| CN111121067A (en) * | 2019-11-24 | 2020-05-08 | 中煤科工集团重庆研究院有限公司 | Method for utilizing low-concentration gas |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105715518A (en) * | 2016-01-26 | 2016-06-29 | 云南电网有限责任公司电力科学研究院 | Heating-electric-cooling tri generation device with cold supply in summer and heat supply in winter and method |
| CN105715518B (en) * | 2016-01-26 | 2017-10-03 | 云南电网有限责任公司电力科学研究院 | A kind of summer cooling winter heat supply cold, heat and electricity triple supply device and method |
| CN105969438A (en) * | 2016-05-18 | 2016-09-28 | 辽宁石油化工大学 | Marginal gas field natural gas pretreatment method based on cooling-heating-power cogeneration |
| CN107143435A (en) * | 2017-06-22 | 2017-09-08 | 江苏科技大学海洋装备研究院 | The distributed energy resource system and method for work of a kind of LNG Power Vessels |
| CN107748495A (en) * | 2017-09-18 | 2018-03-02 | 同济大学 | A kind of Optimal Configuration Method of distributed triple-generation and heat pump combined system |
| CN107748495B (en) * | 2017-09-18 | 2021-02-02 | 同济大学 | Optimal configuration method of distributed combined cooling heating and power generation and heat pump combined system |
| CN108224646A (en) * | 2018-02-28 | 2018-06-29 | 永固工程技术(江苏)有限公司 | New hospital energy conserving system |
| CN110671840A (en) * | 2019-10-10 | 2020-01-10 | 北京建筑大学 | Heat, power and cold combined supply system based on liquefied natural gas gasification cold energy and operation method |
| CN110985202A (en) * | 2019-11-24 | 2020-04-10 | 中煤科工集团重庆研究院有限公司 | Cold, heat and electricity triple supply system based on low-concentration gas |
| CN111121067A (en) * | 2019-11-24 | 2020-05-08 | 中煤科工集团重庆研究院有限公司 | Method for utilizing low-concentration gas |
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