CN103134352A - Flow passage type sewage heat exchanger - Google Patents

Flow passage type sewage heat exchanger Download PDF

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Publication number
CN103134352A
CN103134352A CN2011104031838A CN201110403183A CN103134352A CN 103134352 A CN103134352 A CN 103134352A CN 2011104031838 A CN2011104031838 A CN 2011104031838A CN 201110403183 A CN201110403183 A CN 201110403183A CN 103134352 A CN103134352 A CN 103134352A
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China
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sewage
clear water
heat exchanger
runner
outlet
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CN2011104031838A
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CN103134352B (en
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尚德敏
李金峰
李伟
张勇
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HIT (HARBIN INSTITUTE OF TECHNOLOGY) KINT TECHNOLOGY Co Ltd
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HIT (HARBIN INSTITUTE OF TECHNOLOGY) KINT TECHNOLOGY Co Ltd
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Publication of CN103134352A publication Critical patent/CN103134352A/en
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Abstract

The invention provides a flow passage type sewage heat exchanger which structurally comprises a box body, a sewage flow passage, a clear water flow passage, a dirt removing door and a base. Sewage and clear water respectively flow in the flow passages arranged inside the box body and heat is exchanged through a dividing wall. The clear water flow passage is composed of a plurality of circular heat transmission tubes, arranged inside the sewage flow passage with a rectangular cross section, and tightly attached to the lower surface of a top plate of the sewage flow passage. The sewage flow passage comprises a sewage inlet, a sewage pipeline and a sewage outlet. The sewage enters the heat exchanger from the sewage inlet, enters the sewage pipeline from a water inlet at one end of the top plate of the sewage pipeline, flows out from a water outlet at the other end of a bottom plate, and finally flows out from the sewage outlet. The clear water flow passage comprises a clear water inlet, an inlet water distributive tank, clear water pipelines, a tile-shaped plate, an outlet collection tank and a clear water outlet. The clear water enters the heat exchanger from the clear water inlet, passes the inlet water distributive tank, enters the clear water pipeline, passes the tile-shaped plate, enters another clear water pipeline, and finally passes an outlet collection tank and flows out from the clear water outlet.

Description

The flow channel type sewage heat exchanger
Technical field
The present invention relates to heat-exchange apparatus, particularly relate to the flow channel type sewage heat exchanger.
Background technology
Utilize municipal sewage as Cooling and Heat Source, building to be carried out heating air conditioning, can directly reduce the consumption of other short energy, can also reach simultaneously the purpose of twice laid, be resource regeneration, develop a circular economy, build a conservation-minded society, the important measures of friendly environment.
Sewage source heat pump relies on the states of matter circulation change of source pump internal refrigeration storage agent, absorbs from sewage winter heat after the source pump intensification to building heat supplying, realize cooling thereby pass to sewage to the heat in building by source pump summer.Sewage has substituted cooling tower, has the outstanding advantages such as energy-efficient, environmental protection, safe and reliable, a tractor serves several purposes.
Utilizing sewage source heat pump to realize the recycling of city used heat, turn waste into wealth, is that novel renewable and clean energy resource utilizes technology, the requirement of meet sustainable development, building a resource-conserving and environment-friendly society.Utilize scope, expand and have far reaching significance aspect the urban sewage treatment benefit enlarging municipal sewage.
Solution comprises the abominable water quality of sewage, and the obstruction of heat exchanging equipment and pipeline and fouling realize continuing and stably heat exchange, are worldwide technological puzzle.
Utilize sewage to be as the key problem in technology of the Cooling and Heat Source of sewage source heat pump: to realize the high-efficiency and continuous heat exchange of sewage.
Common way is between municipal sewage and heat pump, and sewage filter device and sewage heat exchanger are set, and heat pump absorbs heat from sewage, or in the sewage release heat.Sewage after positive energy exchange from return pipe, turns back in the exhaust system of municipal sewage.
The sewage filter device that arranges before sewage heat exchanger, its filter bores can not be very little, otherwise sewage filter device is blocked soon.Such sewage filter device can solve the blockage problem of sewage heat exchanger, but the tiny sticky contaminant in sewage, can pass through sewage filter device, enter sewage heat exchanger, constantly in the inner sedimentation of sewage heat exchanger, in heat exchanger plates surface deposition, fouling, the heat exchanger plates surface resistance of heat transfer is increased, and the heat exchanger overall performance degenerates soon.
In industrial or agricultural and people's lives, discharge various sewage.Sewage heat exchanger and common heat exchanger condition of work make a big difference, the method for designing of common heat exchanger, and use experience can not be used for sewage heat exchanger.Although the method for designing of common heat exchanger and manufacturing process are all very ripe,, the sewage heat exchanger science design method so far, does not also have fine solution.
At present, on market, a kind of pipe row formula runner heat exchanger is arranged, with many flat tubes, downhand welding in parallel becomes pipe row, is the clear water runner in pipe row, and pipe row is the sewage runner up and down, the sewage runner is unblocked, effluent flow rate is very fast, and not only foreign material, comprise that most of silt can pass through heat exchanger smoothly, and do not deposit, solved preferably the problem of sewage heat change.But the sewage heat exchanger of this structure has two fatal shortcomings: the one, and this heat exchanger is in manufacture process, and the welding job amount is huge, and cost is too high; The 2nd, this heat exchanger is in production run, and weld seam easily produces fatigue rupture, causes leakage, affects social benefit.
The background technology of above-mentioned relevant sewage heat exchanger has a detailed description in following monograph:
1, Zhao Jun, the Dai Chuanshan chief editor, ground source heat pump technology and building energy conservation are used, Beijing: China Construction Industry Press, 2009.
2, (U.S.) salad, Sai Kulike work, Cheng Linyi, design of heat exchanger technology, Beijing: China Machine Press, 2010.
Summary of the invention
The present invention provides a kind of flow channel type sewage heat exchanger, and it is applicable to sewage heat change, and the sewage runner is unimpeded, and the foreign material in sewage and silt can pass through it smoothly, and neither deposition, do not stop up yet.It rational in infrastructure, manufacturing cost is lower; It is difficult for leaking, can long-term stable operation.
Its structure comprises: casing, sewage runner, clear water runner, soil-shifting door and base; Sewage and clear water flow in the runner in casing respectively, sewage and clear water are by the partition heat exchange, and the clear water runner is made of many circular heat-transfer pipes, and being arranged on the cross section is in the sewage runner of rectangle, the heat-transfer pipe of described clear water runner, it is close to the lower surface of sewage runner top board.
Described casing, it is the shell of flow channel type sewage heat exchanger, makes with carbon steel sheet, and is rectangular; Box house is sewage runner and clear water runner, on box outer surface, sewage import, outlet of sewer, clear water import, import diversion box, watt shape plate, outlet collector and clear water output is arranged.
Described sewage runner, it comprises: sewage import, sewage conduct, outlet of sewer;
After sewage enters heat exchanger from the sewage import, then be the end opening of top board of the sewage conduct of rectangle through the cross section, namely the water inlet of sewage conduct, enter sewage conduct, and sewage is from the opening of the base plate other end of sewage conduct, and namely the delivery port of sewage conduct flows out; The delivery port of last layer sewage conduct is again the water inlet of lower one deck sewage conduct, and effluent stream is after the multilayer sewage conduct, by the outlet of sewer of heat exchanger, outflow heat exchanger;
Sewage conduct is made with steel plate, sewage conduct electroplating surface corrosion resistant metal.
Described clear water runner, it comprises: clear water import, import diversion box, fresh water pipeline, watt shape plate, outlet collector, clear water output;
Clear water enters heat exchanger from the clear water import of the below of heat exchanger, pass through the import diversion box, clear water enters the fresh water pipeline of lowermost layer from the heat exchanger left and right sides respectively, after flowing through a stroke again, through watt shape plate, enter the last layer fresh water pipeline, watt shape plate connects the end of contiguous two-layer fresh water pipeline, is the passage of interlayer clear water, flow through the fresh water pipeline of the superiors when clear water, flow out simultaneously from the left and right outlet of pipe end, then through the outlet collector, flow out by clear water output;
Fresh water pipeline is made with many steel pipes, and outer surface is electroplated corrosion resistant metal.
Described soil-shifting door, it comprises front soil-shifting door and rear soil-shifting door, and front soil-shifting door and rear soil-shifting door have blocked the end of each layer sewage runner, when needs are removed contamination, open front soil-shifting door and rear soil-shifting door, and each layer sewage runner is penetrating coming out all.
Advantage of the present invention is:
1, it is applicable to sewage heat change, and runner inside is unobstructed, is difficult for all plugs;
2, during contamination precipitation in sewage, fouling on the base plate of sewage runner, the bottom surface is not heat-transfer area;
3, due to the effect that gravity and sewage wash away, impurity is detained seldom on clear water heat-transfer pipe arc-shaped outer surface, and is very little to Heat Transfer Influence.
Can find out, the flow channel type sewage heat exchanger, it is applicable to sewage heat change, and it is difficult for all plugs, and contamination precipitation incrustation also not too affects heat exchange.The flow channel type sewage heat exchanger can long-term stable operation, can keep higher heat exchange efficiency all the time.
Description of drawings
Fig. 1 is the basic principle figure of flow channel type sewage heat exchanger embodiment of the present invention;
Fig. 2 is the sewage runner structure chart of flow channel type sewage heat exchanger embodiment of the present invention;
Fig. 3 is the clear water flow passage structure figure of flow channel type sewage heat exchanger embodiment of the present invention;
Fig. 4 is the overall construction drawing of flow channel type sewage heat exchanger embodiment of the present invention.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
Fig. 1 has provided the basic principle figure of flow channel type sewage heat exchanger embodiment of the present invention.
Basic principle such as Fig. 1 of flow channel type sewage heat exchanger embodiment of the present invention, two runners of expression sewage and clear water, sewage and clear water carry out convective heat exchange.
The sewage runner is by the top board 120 of runner and base plate 130, and the cross section that side plate and end plate consist of is the sewage conduct 110 of rectangle.The water inlet 135 of sewage conduct 110, at an end of top board 120, the delivery port 140 of sewage conduct 110 is at the other end of base plate 130.
In sewage conduct 110, the clear water runner is set, the clear water runner comprises: fresh water pipeline 210, its water inlet 215, import 216 and its delivery port 225, and other many fresh water pipelines.All fresh water pipeline is parallel to each other, 1 to 2 centimetre of spacing.Fresh water pipeline is circular heat-transfer pipe, is close to the lower surface of sewage runner top board 120.The import 215 of fresh water pipeline, import 216 and export 225, the level of being picks out, and imports and exports direction axially vertical with runner.
The length of fresh water pipeline ratio sewage pipeline is less, and the length of each fresh water pipeline is not identical, and whole two ends of fresh water pipelines all can not enter in the upright projection of the water inlet 135 of sewage conduct 110 and its delivery port 140.
The temperature of the fluid in two runners not simultaneously, the tube wall by fresh water pipeline 210 between them carries out heat exchange.
According to the heat exchanger that this structure arranges, its following points benefit:
1, it is applicable to sewage heat change, and runner inside is unobstructed, and is unobstructed, without the dead angle, is difficult for incrustation, is difficult for all plugs;
2, when the impurity in sewage precipitates in runner, it accumulates on the bottom surface 130 of sewage conduct, and is little on the impact of heat-transfer area;
3, when the water inlet 135 of sewage from sewage conduct 110 enters, it does not intersect with heat-transfer pipe, but fling the base plate of sewage runner downwards, then following current road base plate diffluence forward, the impurity in sewage can not precipitate in runner or on heat-transfer pipe, and is just very little to Heat Transfer Influence yet;
4, sewage is along sewage runner base plate 130, and the surface of the fresh water pipeline 120 that vertically arranges, diffluence before a road direction, and it is not subjected to any stopping.When the end that flows to the sewage runner, pour down from the delivery port 140 of sewage runner.Therefore, impurity is in runner, and the precipitation of having no chance can not affect the heat exchange of sewage and clear water.
Can find out, the flow channel type sewage heat exchanger, it is applicable to sewage heat change, and it is difficult for all plugs, and contamination precipitation incrustation also not too affects heat exchange.The flow channel type sewage heat exchanger can long-term stable operation, can keep higher heat exchange efficiency all the time.
Fig. 2 has provided the sewage runner structure chart of flow channel type sewage heat exchanger embodiment of the present invention.
The sewage runner of flow channel type sewage heat exchanger embodiment of the present invention, it comprises: sewage import 105, sewage conduct 110, the top board 120 of sewage conduct 110, base plate 130, the water inlet 135 of sewage conduct 110, the delivery port 140 of sewage conduct 110, it is also the water inlet of lower one deck sewage conduct simultaneously, outlet of sewer 150.
After sewage entered heat exchanger from sewage import 105, the water inlet 135 through sewage conduct 110 entered sewage conduct 110, was close to base plate 130 and the top board 120 of sewage conduct 110, flowed in heat exchanger.The other end of runner base plate 130 is openings, is called delivery port 140, and its guiding sewage enters lower one deck pipeline from the last layer pipeline, and it is also the water inlet of lower one deck sewage conduct.In sewage heat exchanger, every one deck sewage conduct has a runner base plate, total several runner base plates, and all runner base plates are all end openings, the runner opening of upper and lower bottom plate staggers mutually.
When sewage is entered by sewage import 105, along sewage conduct, come and go downwards and flow through several horizontal throws, after arriving the sewage conduct of foot, arrive outlet of sewer 150.
An outstanding feature of sewage conduct is that sewage is in a vertical elevation, comes and goes to flow.In other words, the bottom surface of a upper sewage conduct is the end face of next sewage conduct.The benefit that flows like this is: dirt impurity in sewage conduct, be deposited on the bottom surface of sewage conduct, and the bottom surface of this sewage conduct, it is on the interface between sewage and sewage, therefore, does not affect the heat exchange between sewage and clear water.
Because the viscosity of sewage is larger, the thermal resistance of heat exchanger is main still in the sewage side.Therefore, heat exchanger adopts steel plate to make, and the centre is provided with a plurality of runners of turning back, and namely the runner bottom surface, be in order to improve sewage and clear water flow velocity, to improve the convection transfer rate between sewage or clear water and partition.
The sewage runner is made with steel plate usually, in order to prevent the corrosion of sewage heat exchanger sewage runner, to four inner surfaces of sewage runner, do surface treatment, can electroplate corrosion resistant metal, such as: chromium, nickel.
Fig. 3 has provided the clear water flow passage structure figure of flow channel type sewage heat exchanger embodiment of the present invention.
The clear water runner of flow channel type sewage heat exchanger embodiment of the present invention, it comprises: clear water import 205, import diversion box 230, watt shape plate 240, fresh water pipeline 210, the water inlet 215 of fresh water pipeline 210, the delivery port 225 of fresh water pipeline 210, outlet collector 220, clear water output 250.
After clear water entered heat exchanger from the below clear water import 205 of heat exchanger, through import diversion box 230, clear water entered respectively the fresh water pipeline of lowermost layer from the left and right sides, after flowing through a stroke, through watt shape plate, entered a fresh water pipeline.Watt shape plate 240 connects the end of contiguous two-layer fresh water pipeline, is the passage of interlayer clear water.When clear water flow to the fresh water pipeline 210 of the superiors, be also to enter from the left and right sides: wherein a side had water inlet 215, and opposite side has water inlet 214.The outlet of fresh water pipeline 210 is also that flow out simultaneously the left and right, one of them delivery port 225.Then flow out through outlet collector 220, then by clear water output 250.
The clear water runner that consists of by many circular heat-transfer pipes is arranged in the sewage runner.One end of clear water runner is by watt shape plate, and the guiding clear water enters and works as preceding pipeline from a upper pipeline; The other end of clear water runner is by watt shape plate, and the guiding clear water is from entering next pipeline when preceding pipeline.The fresh water pipeline water (flow) direction of two vicinities in every up and down is opposite.In sewage heat exchanger, fresh water pipeline is arranged in sewage conduct, and a plurality of fresh water pipelines come and go and flow, and by the heat-transfer pipe partition, carry out heat exchange with sewage.
An outstanding feature of clear water runner is, it is in sewage conduct, it is close to the top board of sewage conduct, it avoids sewage import and the outlet of sewer of sewage conduct, fresh water pipeline is parallel with the sewage conduct center line, effluent stream is not intersected with fresh water pipeline, and this has just been avoided the foreign material in sewage to greatest extent, and lash is at the fresh water pipeline outer surface; Also avoided the silt in sewage, the deposition between fresh water pipeline.
The clear water runner generally can not stop up, the good fluidity of clear water, and the thermal resistance of clear water side is usually less.
In sewage runner and clear water runner, being equipped with a plurality of runners of turning back, is in order to improve sewage and clear water flow velocity, to improve the coefficient of heat transfer.
Fresh water pipeline is made with steel pipe, and in order to prevent sewage or clear water to the corrosion of clear water runner, the surfaces externally and internally of fresh water pipeline will process, and can electroplate corrosion resistant metal, such as: chromium, nickel.
Fig. 4 has provided the overall construction drawing of flow channel type sewage heat exchanger embodiment of the present invention.
The profile of flow channel type sewage heat exchanger embodiment of the present invention is the casing of a rectangle, makes with steel plate, has outside casing: sewage import 105, outlet of sewer 150; Clear water import 205, import diversion box 230, watt shape plate 240, outlet collector 220, clear water output 250; Front soil-shifting door 310, rear soil-shifting door 320; Base 330.
After sewage enters sewage heat exchanger from sewage import 105, be the sewage conduct of rectangle along the cross section of level, come and go in heat exchanger and flow, the complete stroke of every stream is to the runner that descends.Come and go flow through several strokes after, arrive the sewage conduct of foot, arrive at last outlet of sewer 150.
Clear water is entered by clear water import 205, through import diversion box 230, enters and asks water flow passage by what many horizontal heat transfer pipes consisted of, and by watt shape plate 240, from one deck clear water runner, enter another layer clear water runner.At last, through outlet collector 220, then flow out by clear water output 250.
The fresh water pipeline that circular heat-transfer pipe is made is arranged in the sewage runner, the clear water in heat-transfer pipe, and the sewage outer by tube wall and pipe carries out heat exchange.Sewage and clear water are countercurrent flows, can obtain maximum heat transfer effect.
Front soil-shifting door 310 and rear soil-shifting door 320 have blocked the end of each layer sewage runner, when sewage runner operation a period of time, in the time of need to removing contamination, open front soil-shifting door 310 and rear soil-shifting door 320, each layer sewage runner is penetrating, all come out, be convenient to observe and start to clear up the dirt of deposition in the sewage runner.
Base 330 is set, and it both had been convenient to fixing whole sewage heat exchanger, also was convenient to the outlet of sewer 150 external connection that import is connected with clear water.

Claims (5)

1. flow channel type sewage heat exchanger, its structure comprises: casing, sewage runner, clear water runner, soil-shifting door and base; Sewage and clear water flow in the runner in casing respectively, and sewage and clear water are by the partition heat exchange, and the clear water runner is made of many circular heat-transfer pipes, and being arranged on the cross section is in the sewage runner of rectangle, it is characterized in that:
The heat-transfer pipe of described clear water runner, it is close to the lower surface of sewage runner top board.
2. according to flow channel type sewage heat exchanger claimed in claim 1, it is characterized in that:
Described casing, it is the shell of flow channel type sewage heat exchanger, makes with carbon steel sheet, and is rectangular; Box house is sewage runner and clear water runner, on box outer surface, sewage import, outlet of sewer, clear water import, import diversion box, watt shape plate, outlet collector and clear water output is arranged.
3. according to the described flow channel type sewage heat exchanger of claim 1 or 2, it is characterized in that:
Described sewage runner, it comprises: sewage import, sewage conduct, outlet of sewer;
After sewage enters heat exchanger from the sewage import, then be the end opening of top board of the sewage conduct of rectangle through the cross section, namely the water inlet of sewage conduct, enter sewage conduct, and sewage is from the opening of the base plate other end of sewage conduct, and namely the delivery port of sewage conduct flows out; The delivery port of last layer sewage conduct is again the water inlet of lower one deck sewage conduct, and effluent stream is after the multilayer sewage conduct, by the outlet of sewer of heat exchanger, outflow heat exchanger;
Sewage conduct is made with steel plate, sewage conduct electroplating surface corrosion resistant metal.
4. according to the described flow channel type sewage heat exchanger of claim 1 or 2, it is characterized in that:
Described clear water runner, it comprises: clear water import, import diversion box, fresh water pipeline, watt shape plate, outlet collector, clear water output;
Clear water enters heat exchanger from the clear water import of the below of heat exchanger, pass through the import diversion box, clear water enters the fresh water pipeline of lowermost layer from the heat exchanger left and right sides respectively, after flowing through a stroke again, through watt shape plate, enter the last layer fresh water pipeline, watt shape plate connects the end of contiguous two-layer fresh water pipeline, is the passage of interlayer clear water, flow through the fresh water pipeline of the superiors when clear water, flow out simultaneously from the left and right outlet of pipe end, then through the outlet collector, flow out by clear water output;
Fresh water pipeline is made with many steel pipes, and outer surface is electroplated corrosion resistant metal.
5. according to flow channel type sewage heat exchanger claimed in claim 1, it is characterized in that:
Described soil-shifting door, it comprises front soil-shifting door and rear soil-shifting door, and front soil-shifting door and rear soil-shifting door have blocked the end of each layer sewage runner, when needs are removed contamination, open front soil-shifting door and rear soil-shifting door, and each layer sewage runner is penetrating coming out all.
CN201110403183.8A 2011-11-29 2011-11-29 Flow passage type sewage heat exchanger Active CN103134352B (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2502351A1 (en) * 1975-01-22 1976-07-29 Wilfried Von Der Ohe Economical shower unit with heat exchanger - has cold water supply passing by hot waste water in counterflow thereby absorbing heat
JPS6053735A (en) * 1983-08-31 1985-03-27 Natl House Ind Co Ltd Water heating device utilizing waste hot-water of bath
CN2499782Y (en) * 2001-09-11 2002-07-10 黄稳平 Recovering device for waste heat of waste water
US20060242983A1 (en) * 2005-04-28 2006-11-02 Spadafora Paul F Geothermal system utilizing supplemental ground heat from drainage fields
CN101275814A (en) * 2008-04-11 2008-10-01 大连理工大学 Soaking type acoustic cavitation sewage water heat exchanger
CN101598507A (en) * 2009-07-02 2009-12-09 宫润泽 Heat exchange device of complete isolation sewage pipe casing of single-layer flat pipe
CN201373684Y (en) * 2009-03-27 2009-12-30 重庆三弓科技发展有限公司 Equal temperature difference heat recycling device
KR20100067000A (en) * 2008-12-10 2010-06-18 신동호 Waste water heat collector by bsing heat exchange way

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2502351A1 (en) * 1975-01-22 1976-07-29 Wilfried Von Der Ohe Economical shower unit with heat exchanger - has cold water supply passing by hot waste water in counterflow thereby absorbing heat
JPS6053735A (en) * 1983-08-31 1985-03-27 Natl House Ind Co Ltd Water heating device utilizing waste hot-water of bath
CN2499782Y (en) * 2001-09-11 2002-07-10 黄稳平 Recovering device for waste heat of waste water
US20060242983A1 (en) * 2005-04-28 2006-11-02 Spadafora Paul F Geothermal system utilizing supplemental ground heat from drainage fields
CN101275814A (en) * 2008-04-11 2008-10-01 大连理工大学 Soaking type acoustic cavitation sewage water heat exchanger
KR20100067000A (en) * 2008-12-10 2010-06-18 신동호 Waste water heat collector by bsing heat exchange way
CN201373684Y (en) * 2009-03-27 2009-12-30 重庆三弓科技发展有限公司 Equal temperature difference heat recycling device
CN101598507A (en) * 2009-07-02 2009-12-09 宫润泽 Heat exchange device of complete isolation sewage pipe casing of single-layer flat pipe

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