CN108387024A - A kind of low temperature exhaust heat reclaiming type lithium bromide absorption cold and hot water system - Google Patents

A kind of low temperature exhaust heat reclaiming type lithium bromide absorption cold and hot water system Download PDF

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Publication number
CN108387024A
CN108387024A CN201810273025.7A CN201810273025A CN108387024A CN 108387024 A CN108387024 A CN 108387024A CN 201810273025 A CN201810273025 A CN 201810273025A CN 108387024 A CN108387024 A CN 108387024A
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CN
China
Prior art keywords
heat
water
waste
refrigerant
low temperature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810273025.7A
Other languages
Chinese (zh)
Inventor
刘明军
夏克盛
张红岩
韩世庆
孟玲燕
王剑新
李伦
王海静
李德权
张佳琳
李伟
邵虹
唐倩
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Matsushita Refrigeration (dalian) Co Ltd
Panasonic Appliances Air Conditioning and Refrigeration Dalian Co Ltd
Original Assignee
Matsushita Refrigeration (dalian) Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Refrigeration (dalian) Co Ltd filed Critical Matsushita Refrigeration (dalian) Co Ltd
Priority to CN201810273025.7A priority Critical patent/CN108387024A/en
Publication of CN108387024A publication Critical patent/CN108387024A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B15/00Sorption machines, plant, or systems, operating continuously, e.g. absorption type
    • F25B15/02Sorption machines, plant, or systems, operating continuously, e.g. absorption type without inert gas
    • F25B15/06Sorption machines, plant, or systems, operating continuously, e.g. absorption type without inert gas the refrigerant being water vapour evaporated from a salt solution, e.g. lithium bromide
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B27/00Machines, plant, or systems, using particular sources of energy
    • F25B27/02Machines, plant, or systems, using particular sources of energy using waste heat, e.g. from internal-combustion engines
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/27Relating to heating, ventilation or air conditioning [HVAC] technologies
    • Y02A30/274Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/62Absorption based systems
    • Y02B30/625Absorption based systems combined with heat or power generation [CHP], e.g. trigeneration

Abstract

The invention belongs to art of refrigeration units, and in particular to a kind of low temperature exhaust heat reclaiming type lithium bromide absorption cold and hot water system.Propose a kind of low temperature exhaust heat reclaiming type lithium bromide absorption cold and hot water system, including condenser, waste-heat recoverer, absorber, evaporator, multiple circulating pumps and connecting line, there are the two kinds of operating modes that freeze and heat in the system, when the system is operated in heating mode, low temperature exhaust heat accesses to waste-heat recoverer by the road, water as refrigerant is via the drop shower device in piping connection to waste-heat recoverer, the water as refrigerant of the drop shower device drop leaching generates refrigerant vapour after waste-heat recoverer heats, the refrigerant vapour obtains heating hot water with the heating water heat exchange in heat-transfer pipe under vacuum conditions.The present invention provides a kind of low temperature exhaust heat reclaiming type lithium bromide absorption cold and hot water system, which can realize waste heat recovery cooling in summer, heat supply in winter by pattern switching, simplify residual neat recovering system, reduce investment outlay.

Description

A kind of low temperature exhaust heat reclaiming type lithium bromide absorption cold and hot water system
Technical field
The invention belongs to art of refrigeration units, and in particular to a kind of low temperature exhaust heat reclaiming type lithium bromide absorption cold and hot water system System.
Background technology
Low temperature exhaust heat reclaiming type lithium-bromide absorption-type refrigerating machine is to utilize low temperature exhaust heat(Generally liquid carrier, gaseous state carry The waste heat of the forms such as body)Driving, the equipment for producing cold water because of its recoverable low temperature exhaust heat, adopt water as refrigerant to ring The advantages such as border is pollution-free, power system capacity is big, system maintenance management facilitates, in industrial afterheat recovery refrigerating field extensive use, Such as steel, petrochemical industry, chemical industry, coking, weaving.Low temperature exhaust heat reclaiming type suction-type lithium bromide system is only capable of recovery waste heat system at present It is cold, it cannot heat, be primarily due to that low temperature exhaust heat grade is relatively low, lithium-bromide solution can not be heated to the temperature, dense that be concentrated to needs Degree;And in fact, many projects need recovery waste heat cooling in summer, heat supply in winter, realization waste heat recovery to maximize.Current does Method meet demand mainly in such a way that low temperature exhaust heat reclaiming type lithium-bromide absorption-type refrigerating machine is combined with heating heat exchanger(Such as Shown in Fig. 1), on the one hand doing so keeps residual neat recovering system more complicated, on the other hand increase residual neat recovering system investment(Industry The inferior quality of low temperature exhaust heat needs the heating heat exchanger of corrosion resistant special substance).
Invention content
It is insufficient present on it is an object of the invention to solve, a kind of low temperature exhaust heat reclaiming type suction-type lithium bromide is provided Cold and hot water supply system, the system can realize waste heat recovery cooling in summer, heat supply in winter by pattern switching, simplify waste heat recovery system System, reduces investment outlay.
Present invention technical solution used for the above purpose is:Propose a kind of low temperature exhaust heat reclaiming type lithium bromide Absorption type cold-hot water system, including condenser, waste-heat recoverer, absorber, evaporator, internal heat regenerator, refrigeration evaporator follow Ring pump, weak solution circulating pump, concentrated solution circulating pump, heating evaporative recirculation pump, waste heat control valve, waste heat changes in temperature switching valve, water system System changes in temperature switching valve, internal system changes in temperature switching valve, water system pipeline, refrigerant reservoir, connecting line, extract system and control There are two kinds of operating modes of recycling low temperature exhaust heat refrigeration and heating, when which is operated in heating mode, low temperature in system, the system Waste heat accesses to waste-heat recoverer by the road, and water as refrigerant is via the drop shower device in piping connection to waste-heat recoverer, the drop The water as refrigerant of shower device drop leaching generates refrigerant vapour after waste-heat recoverer heats, under vacuum conditions the refrigerant vapour and biography Heating water heat exchange in heat pipe obtains heating hot water.
The evaporator is arranged with absorber in same cylinder, and the condenser is arranged with waste-heat recoverer in same cylinder In vivo, the water as refrigerant comes in flash-pot, and the water as refrigerant in evaporator is by the road and heating evaporative recirculation pump is delivered to waste heat Drop shower device in recover, the interior refrigerant vapour generated of the waste-heat recoverer is delivered in evaporator by the road, described cold Agent steam obtains heating hot water with the heating water heat exchange in heat-transfer pipe of evaporator, is connected between the waste-heat recoverer and evaporator There is water as refrigerant return line.
The evaporator is arranged with absorber in same cylinder, and the condenser is arranged with waste-heat recoverer in same cylinder In vivo, further include refrigerant reservoir in the lithium bromide absorption cold and hot water system, the water as refrigerant comes from refrigerant reservoir, cold Water as refrigerant in agent reservoir is by the road and heating evaporative recirculation pump is delivered to the drop shower device in waste-heat recoverer, the waste heat The refrigerant vapour generated in recover enters in condenser, and the refrigerant vapour is obtained with the heating water heat exchange in condenser thermal transfer pipe Must heat hot water, and water as refrigerant return line is connected between the waste-heat recoverer and cryogen memory.
Two kinds of operating modes of refrigeration and heating of the lithium bromide absorption cold and hot water system can be by being arranged in system The changes in temperature switching valve automatic or manual of interconnecting tube road switches.
The low temperature exhaust heat includes water at low temperature, conduction oil, flue gas, low-pressure steam and steam exhaust.
The cold and hot water supply system of the present invention is switched by inside realizes that summer residual heat recycles refrigeration mode and winter waste heat recovery Heating mode operates, and when entering waste heat recovery refrigeration mode, internal system is recycled by lithium-bromide solution, water as refrigerant recycles in fact It is existing;When entering waste heat recovery heating mode, internal system is recycled by water as refrigerant and is realized, the present invention is special compared with prior art Profit has the beneficial effect that:
(1)The present invention is switched by internal system realizes that summer residual heat recycles refrigeration mode and winter waste heat recovery heating mode is transported Turn, realizes the maximization of heat recovery;
(2)The present invention is switched by internal system realizes that summer residual heat recycles refrigeration mode and winter waste heat recovery heating mode is transported Turn, when warming operation, is transmitted by cryogen hydro-thermal, it can be achieved that effect more better than tradition heating heat exchanger, that is, realize waste heat time The maximization utilized is received, and saves heating heat exchanger, simplifies residual neat recovering system structure, reduces investment outlay;
(3)Further, the present invention carries out refrigerant cycle using independent refrigerant reservoir, and additional independent refrigerant reservoir can be protected The respective separate storage of water as refrigerant of cooling condition and the operating mode that heats is demonstrate,proved, also can guarantee that the water as refrigerant of heating operating mode does not enter bromination In lithium solution, ensure the stability of two kinds of operating modes operating.
(4)The application range of the present invention is very extensive, first, the low temperature exhaust heat form of recoverable is wide, low temperature exhaust heat It can make water at low temperature, conduction oil, flue gas, low-pressure steam, steam exhaust etc., second is that applicable field is wide, can be applicable to steel, coke The fields such as change, petrochemical industry, chemical industry.It is carried out using the waste heat of the forms such as liquid carrier waste heat, gaseous carrier waste heat and gas-liquid mixed Waste heat recovery refrigeration and the occasion of waste heat recovery heating.
Description of the drawings
Fig. 1 is previous low temperature exhaust heat reclaiming type lithium bromide absorption cold and hot water system flow chart;
Fig. 2 is a kind of low temperature exhaust heat reclaiming type lithium bromide absorption cold and hot water system flow chart of the present invention;
Fig. 3 is another low temperature exhaust heat reclaiming type lithium bromide absorption cold and hot water system flow chart of the present invention;
Reference sign:
1-1 condensers, 1-2 waste-heat recoverers, 1-3 absorbers, 1-4 evaporators, the inside 1-5 heat regenerator, 1-6 refrigeration evaporators follow Ring pump, 1-7 weak solutions circulating pump, 1-8 concentrated solutions circulating pump, 1-9 heating evaporative recirculation pump, 1-10 waste heats control valve, 2-1 heating Heat exchanger, 3-1~3-4 waste heat changes in temperature switching valve, 3-5~3-10 water system changes in temperature switching valve, 4-1 waste heats go out pipeline, 4-2 waste heats Into pipeline, 4-3 heat out pipeline, 4-4 heat into pipeline, 4-5 cooling waters into pipeline, 4-6 cooling water outlet tubes road, 4-7 cold water into Pipeline, 4-8 cold water go out pipeline, 5-1~5-8 internal system changes in temperature switching valve, 6-1 refrigerant reservoirs.
Specific implementation mode
Below in conjunction with attached drawing, the present invention is described in detail:
Embodiment one:
As shown in Figure 2 is a kind of low temperature exhaust heat reclaiming type lithium bromide absorption cold and hot water system flow chart of the present invention, this is System with lower component mainly by being constituted:Condenser 1-1, waste-heat recoverer 1-2, absorber 1-3, evaporator 1-4, internal heat regenerator 1-5, refrigeration evaporator circulating pump 1-6, weak solution circulating pump 1-7, concentrated solution circulating pump 1-8, heating evaporative recirculation pump 1-9, waste heat Control valve 1-10, water system changes in temperature switching valve 3-5~3-8, waste heat go out pipeline 4-1, waste heat into pipeline 4-2, heat out pipeline 4- 3, heat into pipeline 4-4, cooling water into pipeline 4-5, cooling water outlet tube road 4-6, cold water into pipeline 4-7, cold water go out pipeline 4-8, The compositions such as internal system changes in temperature switching valve 5-1~5-5, extract system, control system and connecting line, valve.Its main feature is that Waste heat recovery system can be achieved by water system changes in temperature switching valve 3-5~3-8, the 5-1~5-5 switchings of internal system changes in temperature switching valve Cold, waste heat recovery heating both of which operating.
The switching of waste heat recovery refrigeration mode and drive manner are described as follows:Water system changes in temperature switching valve 3-5~3-6 is beaten It opens, water system changes in temperature switching valve 3-7~3-8 is closed, internal system changes in temperature switching valve 5-1,5-3,5-5 are closed, internal system is cold Warm switching valve 5-2,5-4 is opened and control mode switch carries out waste heat recovery cooling operation pattern.The pattern course of work is visitor Family low temperature exhaust heat enters waste-heat recoverer 1-2 heating lithium bromide weak solutions, is that lithium bromide is dense by the heating concentration of lithium bromide weak solution Solution, concentrated solution enters absorber 1-3 through internal heat regenerator 1-5, while refrigerant vapour is segregated into from lithium-bromide solution Condenser 1-1, refrigerant vapour is condensed into water as refrigerant with cooling water heat exchange in condenser 1-1, and the water as refrigerant in condenser 1-1 is logical It crosses throttling set and enters evaporator 1-4, water as refrigerant is recycled by the 1-6 drivings of refrigeration evaporator circulating pump in evaporator 1-4, is dripped Leaching is in heat transfer tube outer surface, and because pressure is low in evaporator 1-4, the cryogen water evaporation of cycle drop leaching absorbs the heat of water in heat-transfer pipe Amount, which is realized, produces chilled water, and the refrigerant vapour evaporated in evaporator 1-4 is absorbed by the lithium bromide concentrated solution in absorber 1-3, To maintain the environment under low pressure in evaporator 1-4, while lithium bromide concentrated solution absorbs water vapour becomes lithium bromide weak solution, then into Enter waste-heat recoverer 1-2 cycles, internal heat regenerator 1-5 mainly recycles lithium bromide concentrated solution heat, improves internal follow Control is adjusted according to cooling system load in ring efficiency, waste heat control valve 1-10.
The switching of waste heat recovery heating mode and drive manner are described as follows:Water system changes in temperature switching valve 3-5~3-6 is closed It closes, water system changes in temperature switching valve 3-7~3-8 is opened, internal system changes in temperature switching valve 5-1,5-3,5-5 are opened, internal system is cold Warm switching valve 5-2,5-4 is closed and control mode switch carries out waste heat recovery warming operation pattern.The pattern course of work is visitor Family low temperature exhaust heat enters the water as refrigerant that waste-heat recoverer 1-2 heating carrys out the 1-9 cycle drop leaching of self-heating evaporative recirculation pump, internal system For subnormal ambient, water as refrigerant becomes refrigerant vapour after being heated, refrigerant vapour enters steaming by internal system changes in temperature switching valve 5-3 Device 1-4 is sent out, refrigerant vapour carries out heat exchange with the hot water in heat-transfer pipe and produces heating hot water in evaporator 1-4, is achieved remaining Recuperation of heat heating mode operates, and control is adjusted according to system heat load in waste heat control valve 1-10.
Embodiment two:
As shown in Figure 3 is another low temperature exhaust heat reclaiming type lithium bromide absorption cold and hot water system flow chart of the present invention, with Former scheme is different, increases refrigerant reservoir 6-1, when water system changes in temperature switching valve 3-7~3-8 is closed, water system Changes in temperature switching valve of uniting 3-9~3-10 is opened, internal system changes in temperature switching valve 5-1,5-5,5-6,5-8 closing, internal system changes in temperature Switching valve 5-2,5-4,5-7 are opened and control mode switch carries out waste heat recovery cooling operation pattern, drive manner and previous side Case is almost the same, repeats no more.When water system changes in temperature switching valve 3-7~3-8 is opened, water system changes in temperature switching valve 3-9~3-10 It closes, internal system changes in temperature switching valve 5-1,5-5,5-6,5-8 are opened, internal system changes in temperature switching valve 5-2,5-4,5-7 are closed And control mode switch carries out waste heat recovery warming operation pattern, which is that client's low temperature exhaust heat enters waste heat time The water as refrigerant that device 1-2 heating carrys out the cycle 1-9 drops leaching of self-heating evaporative recirculation pump is received, internal system is subnormal ambient, water as refrigerant quilt Become refrigerant vapour after heating, refrigerant vapour enters condenser 1-1, refrigerant vapour and the heat in heat-transfer pipe in condenser 1-1 Water carries out heat exchange and produces heating hot water, and the operating of waste heat recovery heating mode is achieved, and waste heat control valve 1-10 is supplied according to system Control is adjusted in warm load.
The present invention is switched by internal system realizes that summer residual heat recycles refrigeration mode and winter waste heat recovery heating mode Operating when warming operation, is transmitted, it can be achieved that heat the better effect of heat exchanger than tradition by cryogen hydro-thermal, that is, realizes waste heat The maximization of recycling, and heating heat exchanger is saved, simplify residual neat recovering system structure, reduces investment outlay.
Embodiments described above is only a part of the embodiment of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.

Claims (5)

1. a kind of low temperature exhaust heat reclaiming type lithium bromide absorption cold and hot water system, including condenser, waste-heat recoverer, absorber, Evaporator, internal heat regenerator, refrigeration evaporator circulating pump, weak solution circulating pump, concentrated solution circulating pump, heating evaporative recirculation pump, Waste heat control valve, waste heat changes in temperature switching valve, water system changes in temperature switching valve, internal system changes in temperature switching valve, water system pipeline, cryogen There are two kinds of Working moulds of recycling low temperature exhaust heat refrigeration and heating in reservoir, connecting line, extract system and control system, the system Formula, it is characterised in that:When the system is operated in heating mode, low temperature exhaust heat accesses to waste-heat recoverer, water as refrigerant warp by the road By the drop shower device in piping connection to waste-heat recoverer, the water as refrigerant of the drop shower device drop leaching is after waste-heat recoverer heats Refrigerant vapour is generated, the refrigerant vapour obtains heating hot water with the heating water heat exchange in heat-transfer pipe under vacuum conditions.
2. a kind of low temperature exhaust heat reclaiming type lithium bromide absorption cold and hot water system according to claim 1, it is characterised in that: The evaporator is arranged with absorber in same cylinder, and the condenser is arranged with waste-heat recoverer in same cylinder, institute It states water as refrigerant to come in flash-pot, the water as refrigerant in evaporator is by the road and heating evaporative recirculation pump is delivered in waste-heat recoverer Drop shower device, the refrigerant vapour generated in the waste-heat recoverer is delivered in evaporator by the road, the refrigerant vapour with Heating water heat exchange in heat-transfer pipe of evaporator obtains heating hot water, and water as refrigerant is connected between the waste-heat recoverer and evaporator Return line.
3. a kind of low temperature exhaust heat reclaiming type lithium bromide absorption cold and hot water system according to claim 1, it is characterised in that: The evaporator is arranged with absorber in same cylinder, and the condenser is arranged with waste-heat recoverer in same cylinder, institute It further includes refrigerant reservoir to state in lithium bromide absorption cold and hot water system, and the water as refrigerant comes from refrigerant reservoir, cryogen storage Water as refrigerant in device is by the road and heating evaporative recirculation pump is delivered to the drop shower device in waste-heat recoverer, the waste-heat recoverer The refrigerant vapour of interior generation enters in condenser, and the refrigerant vapour is heated with the heating water heat exchange in condenser thermal transfer pipe Hot water is connected with water as refrigerant return line between the waste-heat recoverer and cryogen memory.
4. special according to a kind of any low temperature exhaust heat reclaiming type lithium bromide absorption cold and hot water systems of claim 1-3 Sign is:Two kinds of operating modes of refrigeration and heating of the lithium bromide absorption cold and hot water system can be by being arranged in system Changes in temperature switching valve automatic or manual switching on portion's connecting line.
5. special according to a kind of any low temperature exhaust heat reclaiming type lithium bromide absorption cold and hot water systems of claim 1-3 Sign is:The low temperature exhaust heat includes water at low temperature, conduction oil, flue gas, low-pressure steam and steam exhaust.
CN201810273025.7A 2018-03-29 2018-03-29 A kind of low temperature exhaust heat reclaiming type lithium bromide absorption cold and hot water system Pending CN108387024A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810273025.7A CN108387024A (en) 2018-03-29 2018-03-29 A kind of low temperature exhaust heat reclaiming type lithium bromide absorption cold and hot water system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810273025.7A CN108387024A (en) 2018-03-29 2018-03-29 A kind of low temperature exhaust heat reclaiming type lithium bromide absorption cold and hot water system

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CN108387024A true CN108387024A (en) 2018-08-10

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111520695A (en) * 2020-05-09 2020-08-11 中国东方电气集团有限公司 Comprehensive utilization system for recycling flue gas waste heat of aluminum electrolysis cell

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111520695A (en) * 2020-05-09 2020-08-11 中国东方电气集团有限公司 Comprehensive utilization system for recycling flue gas waste heat of aluminum electrolysis cell

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