CN102252340B - Jet and insert combined air pre-heater capable of realizing same inlet/outlet temperature difference of gas in heat exchange pipes - Google Patents
Jet and insert combined air pre-heater capable of realizing same inlet/outlet temperature difference of gas in heat exchange pipes Download PDFInfo
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- CN102252340B CN102252340B CN 201110143940 CN201110143940A CN102252340B CN 102252340 B CN102252340 B CN 102252340B CN 201110143940 CN201110143940 CN 201110143940 CN 201110143940 A CN201110143940 A CN 201110143940A CN 102252340 B CN102252340 B CN 102252340B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/02—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by influencing fluid boundary
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Abstract
The invention discloses a jet and insert combined air pre-heater capable of realizing same inlet/outlet equal temperature difference of gas in heat exchange pipes. The combined air pre-heater comprises a bellows and a plurality of rows of heat exchange pipes, wherein the bellows is provided with a cold air inlet and a hot air outlet, one side of the bellows is provided with a flue gas inlet, and the other side of the bellows is provided with a flue gas outlet; the plurality of rows of heat exchange pipes are arranged in the bellows and divided into a jet area and an insert area, the jet area is arranged at one side close to the flue gas inlet, and the insert area is arranged at one side close to the flue gas outlet; and the cold air inlet sequentially passes through the jet area and the insert area and then is communicated with the hot air outlet. Through the jet and insert combined air pre-heater capable of realizing the same inlet/outlet equal temperature difference of gas in the heat exchange pipes, the pipe wall temperature difference among the heat exchange pipes can be reduced, and the air heated in the heat exchange pipes has the same inlet/outlet temperature difference and the optimal comprehensive heat exchange effect.
Description
Technical field
The present invention relates to air preheater, relate in particular to heat exchanger tube capable of realizing same inlet/outlet temperature difference jet flow and insert Combined air preheater.
Background technology
Jet type air preheater is widely used in the industrial circles such as chemical industry, metallurgy, energy source and power, building materials, be mainly used in UTILIZATION OF VESIDUAL HEAT IN engineering and the air preheat engineering of the equipment such as hot-blast stove, heating furnace, industrial furnace, boiler, it is recovery waste heat fully, pure high temperature air is provided, can saves mass energy.Along with the enhancing of social environment consciousness and the puzzlement of energy scarcity pressure, more and more higher requirement has been proposed also for heat utilization efficiency and the function of air preheater.
At present, be supplied with polytype air preheater on the market, such as radiant type air preheater, shell and tube air preheater, rotary regenerative air preheater, regenerative air preheater, jet type air preheater and convection type air preheater etc., and in industry, be used widely.But there is following problem in these air preheaters: 1, the heat exchange principle of air preheater is single, can not take full advantage of the exchange capability of heat of flue gas under different temperatures, and overall heat exchange property is relatively poor; 2, in general, higher from flue-gas temperatures out such as hot-blast stove, heating furnace, industrial furnaces, reach as high as more than 800～900 ℃, this high-temperature flue gas enters air preheater and air carries out exchange heat, certainly will require the material of air preheater very highly, and can affect service life of air preheater; 3, air preheater can be subject to the radiation of high-temperature flue gas for a long time in running, the gas radiation that particularly is subject to by the front-seat heat exchanger tube of smoke inlet is even more serious, temperature is also high than other heat exchanger tubes, and the thermal expansion that has caused respectively arranging heat exchanger tube differs, when a heat exchanger tube damages, whole air preheater all will be scrapped; 4, air preheater need be selected the heat exchanger tube of different materials model to the exit from smoke inlet, because the material difference that heat exchanger tube is selected, its thermal expansion ability also has very big difference, be difficult to avoid their hot expansibility the problem such as not mate, all these problems have caused that air preheater involves great expense, the life-span is short, affect the overall performance of air preheater.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, provide a kind of reduce between the heat exchanger tube the tube wall temperature difference, make heat exchanger tube capable of realizing same inlet/outlet temperature difference jet flow and the insert Combined air preheater arranging respectively that heated air has the identical import and export temperature difference in the heat exchanger tube, have the optimal synthesis heat transfer effect.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
A kind of heat exchanger tube capable of realizing same inlet/outlet temperature difference jet flow and insert Combined air preheater, comprise bellows and many row's heat exchanger tubes, described bellows are provided with cool air inlet and hot air outlet, bellows one side is provided with smoke inlet, the bellows opposite side is provided with exhanst gas outlet, described many row's heat exchanger tubes are located in the bellows, described many row's heat exchanger tubes are divided into jet band and insert district, the side near smoke inlet is located in described jet band, described insert district is located at the side near exhanst gas outlet, and described cool air inlet is communicated with hot air outlet behind jet band and insert district successively.
The heat exchanger tube of described jet band is comprised of coaxial sheathed inner and outer tubes, and described inner tube is the jet pipe that has some spurt holes.
From described smoke inlet one side to described exhanst gas outlet one side, in each heat exchanger tube on the inner tube quantity of set spurt hole reduce gradually.
Described outer tube upper end closed, described inner tube lower end closed.
The heat exchanger tube in described insert district comprises sleeve pipe, is inserted with insert in the described sleeve pipe, and described insert is comprised of straight section and spiral section, and described straight section places the entrance of sleeve pipe, and described spiral section places the outlet section of sleeve pipe.
From described smoke inlet one side to described exhanst gas outlet one side, the percentage that each straight section length of arranging insert in the heat exchanger tube accounts for overall length reduces gradually.
Described cool air inlet is positioned at the side near smoke inlet, and described hot air outlet is positioned at the side near exhanst gas outlet.
Compared with prior art, the invention has the advantages that:
Heat exchanger tube capable of realizing same inlet/outlet temperature difference jet flow of the present invention and insert Combined air preheater, in bellows, be provided with the jet band, be provided with the insert district near a side of exhanst gas outlet near a side of smoke inlet, the middle high-temperature flue gas that has just entered bellows transfers first middle low-temperature flue gas to after the heat exchange of jet band, middle low-temperature flue gas carries out heat exchange through the insert district again, take full advantage of the heat exchange principle of flue gas under different temperatures, thereby improved heat exchange efficiency.
Form heat exchanger tube in the jet band by coaxial sheathed inner and outer tubes, and offer on inner pipe some spurt holes as jet pipe, cold air enters after the inner tube from spurt hole directive outer tube wall vertically, forming high-speed air air-flow exchange hot side impacts, laminar boundary layer is damaged, greatly strengthen Convective Heat Transfer, the smoke inlet side then utilizes the radiation heat release of high-temperature flue gas to strengthen the radiation heat transfer of fume side, this has not only improved the Composite Walls of air preheater, and has effectively reduced the temperature of smoke inlet side heat exchanger tube.The present invention can be from smoke inlet one side to described exhanst gas outlet one side, the quantity of set spurt hole on the inner tube in each heat exchanger tube is reduced gradually, radiation thermal discharge at smoke inlet one side high-temperature flue gas is large, the spurt hole quantity that arranges is more, the air mass flow that then flows through is larger, and the cooling that tube wall is subject to is just larger; And the radiation thermal discharge of exhanst gas outlet one side flue gas is little, the spurt hole quantity that arranges is fewer, the air mass flow that then flows through is less, the cooling that tube wall is subject to is just less, thereby, spurt hole quantity can reach the tube wall temperature difference of control heat exchanger tube by being set, control the purpose that heated air has the identical import and export temperature difference, make heat exchanger tube have identical wall temperature, be convenient to the material type selecting of unified heat exchanger tube, can reduce the use of exotic material, reduce the material cost of air preheater, solved because the problem of selecting the thermal expansivity of various heat exchange tube material to differ, interior temperature is high to cause burning out of heat exchanger tube because managing thereby can avoid the smoke inlet side, has improved the bulk life time of air preheater; Simultaneously, because the closer to the smoke inlet side, the temperature difference of air and flue gas is larger, and according to thermal conduction study and fluid mechanics principle, the potentiality of augmentation of heat transfer are larger herein, thereby then the air vertical sand shooting is higher to the flow velocity of heat exchange surface to increase herein air mass flow, and the effect of augmentation of heat transfer is better.
Adopt the structure that in sleeve pipe, plugs insert at insert district heat exchanger tube, insert is comprised of straight section and spiral section, when fluid flows into heat exchanger tube, mobile thermal boundary layer has one to start from scratch and rise to the process that meets at the sleeve pipe center line, entrance at sleeve pipe, its thermal boundary layer is thinner, Local Heat Transfer Coefficient is higher than the abundant development section of sleeve pipe middle and lower part, the straight section of insert is placed the entrance of sleeve pipe, it is thinner to take full advantage of entrance section thermal boundary layer, the characteristics that Local Heat Transfer Coefficient is larger, make on the less basis of cover tube voltage drop increase to have good heat exchange property, simultaneously, the straight section of insert so that the hydraulic diameter of sleeve pipe reduce, thereby cause the coefficient of heat transfer to increase to some extent, and the pressure loss is also little; Outlet section thermal boundary layer at sleeve pipe is thicker, the spiral section of insert is placed the outlet section of sleeve pipe, so that fluid produces a tangential speed component, its flowing velocity increases, especially near sleeve pipe wall place, the fluid that makes wall place shear stress increase, be caused by Secondary Flow mixes enhancing, and heat transfer effect is enhanced; By adjusting the spiral section length of respectively arranging insert in the heat exchanger tube, can control the flowing velocity of heat exchange inner air tube, thereby can control the tube wall temperature difference of heat exchanger tube and heated air in the temperature difference of heat exchanger tube import and export, cost reduction, life, the overall performance of air preheater are improved.From smoke inlet one side to exhanst gas outlet one side, the percentage that each straight section length of arranging insert in the heat exchanger tube accounts for overall length reduces gradually, because the straight section of insert is longer, the heat exchanger tube circulating resistance is just less, thereby the air mass flow that the heat exchanger tube of close fume high-temperature side passes through is large, and the cooling that tube wall is subject to is just larger; And the air mass flow that the heat exchanger tube of close flue gas low-temperature side passes through is little, and the cooling that tube wall is subject to is just smaller, thereby reaches the tube wall temperature difference of control heat exchanger tube, the purpose that the heated air of control has the identical import and export temperature difference; Heat exchanger tube has identical wall temperature, and the material type selecting of heat exchanger tube is convenient to unified, can reduce the use of exotic material, reduces the material cost of air preheater, also can improve the bulk life time of air preheater simultaneously.Simultaneously, interior temperature is high to cause burning out of heat exchanger tube because managing can to avoid the smoke inlet high temperature side, also can avoid the excessively low dew point corrosion problem of bringing of exhanst gas outlet low temperature side Yin Wendu.
Insert type air preheater with same inlet-outlet temperature difference of heat exchange tubes flow resistance of the present invention is little, low cost of manufacture, long service life, and overall heat exchange property is good, can realize the operation of air preheater efficient stable.
Description of drawings
Fig. 1 is perspective view of the present invention;
Fig. 2 is main cutaway view of the present invention;
Fig. 3 is the perspective view of insert of the present invention;
Fig. 4 is the structural representation (removing the part outer tube) of jet pipe of the present invention.
Each label represents among the figure:
1, bellows; 2, heat exchanger tube; 11, cool air inlet; 12, hot air outlet; 13, smoke inlet; 14, exhanst gas outlet; 15, connecting plate; 21, jet band; 22, insert district; 211, inner tube; 212, outer tube; 213, spurt hole; 221, sleeve pipe; 222, insert; 223, straight section; 224, spiral section.
The specific embodiment
Fig. 1 to Fig. 4 shows a kind of heat exchanger tube capable of realizing same inlet/outlet temperature difference jet flow and insert Combined air preheater, comprise bellows 1 and many row's heat exchanger tubes 2, bellows 1 are provided with cool air inlet 11 and hot air outlet 12, bellows 1 one sides are provided with smoke inlet 13, bellows 1 opposite side is provided with exhanst gas outlet 14, many row's heat exchanger tubes 2 are located in the bellows 1, heat exchanger tube is all fixed by the connecting plate 15 in the bellows 1 at two ends about in the of 2, many row's heat exchanger tubes 2 are divided into jet band 21 and insert district 22, the side near smoke inlet 13 is located in jet band 21, insert district 22 is located at the side near exhanst gas outlet 14, cool air inlet 11 is positioned at the side near smoke inlet 13, hot air outlet 12 is positioned at the side near exhanst gas outlet 14, cool air inlet 11 is communicated with hot air outlet 12 behind jet band 21 and insert district 22 successively, after being introduced into jet band 21 heat exchanges, the middle high-temperature flue gas that has just entered bellows 1 transfers middle low-temperature flue gas to, middle low-temperature flue gas enters insert district 22 again and carries out heat exchange, take full advantage of the heat exchange principle of flue gas under different temperatures, thereby improved heat exchange efficiency.Heat exchanger tube capable of realizing same inlet/outlet temperature difference jet flow of the present invention and insert Combined air preheater low cost of manufacture, long service life, overall heat exchange property is good, can realize the operation of air preheater efficient stable.
In the present embodiment, the heat exchanger tube 2 of jet band 21 is comprised of coaxial sheathed inner tube 211 and outer tube 212, inner tube 211 is for having the jet pipe of some spurt holes 213, cold air enters after the inner tube 211 from the spurt hole inwall of directive outer tube 212 vertically, forming high-speed air air-flow exchange hot side impacts, laminar boundary layer is damaged, greatly strengthen Convective Heat Transfer, smoke inlet 13 1 sides then utilize the radiation heat release of high-temperature flue gas to strengthen the radiation heat transfer of fume side, this has not only improved the Composite Walls of air preheater, and has effectively reduced the temperature of smoke inlet 13 1 side heat exchanger tubes.Further, from smoke inlet 13 1 sides to exhanst gas outlet 14 1 sides, in each heat exchanger tube 2 on the inner tube 211 quantity of set spurt hole 213 reduce gradually, radiation thermal discharge at smoke inlet 13 1 side high-temperature flue gas is large, spurt hole 213 quantity that arrange are more, the air mass flow that then flows through is larger, and the cooling that tube wall is subject to is just larger; And the radiation thermal discharge of exhanst gas outlet 14 1 side flue gases is little, spurt hole 213 quantity that arrange are fewer, the air mass flow that then flows through is less, the cooling that tube wall is subject to is just less, thereby, spurt hole 213 quantity can reach the tube wall temperature difference of control heat exchanger tube 2 by being set, control the purpose that heated air has the identical import and export temperature difference, make heat exchanger tube 2 have identical wall temperature, be convenient to the material type selecting of unified heat exchanger tube 2, can reduce the use of exotic material, reduce the material cost of air preheater, solved because the problem that the thermal expansivity of selecting different materials to cause differs, interior temperature is high to cause burning out of heat exchanger tube 2 because managing thereby can avoid smoke inlet 13 sides, has improved the bulk life time of air preheater; Simultaneously, because the closer to smoke inlet 13 1 sides, the temperature difference of air and flue gas is larger, and according to thermal conduction study and fluid mechanics principle, the potentiality of augmentation of heat transfer are larger herein, thereby then vertical sand shooting is higher to the air velocity of heat exchange surface to increase herein air mass flow, and the effect of augmentation of heat transfer is better.Further can be with outer tube 212 upper end closeds, inner tube 211 lower end closed, such structure makes cold air enter heat exchanger tube 2 from inner tube 211 upper ends, discharge heat exchanger tube 2 from outer tube 212 lower ends, and the cold air that enters inner tube 211 can only spray into outer tube 212 by spurt hole 213, thereby can strengthen the jet-impingement dynamics, fully the breakable layer laminar boundary layer improves heat transfer effect.
In the present embodiment, the heat exchanger tube 2 in insert district 22 comprises sleeve pipe 221, be inserted with insert 222 in the sleeve pipe 221, insert 222 is comprised of straight section 223 and spiral section 224, straight section 223 places the entrance of sleeve pipe 221, spiral section 224 places the outlet section of sleeve pipe 221, when fluid flows into heat exchanger tube 2, mobile thermal boundary layer has one to start from scratch and rise to the process that meets at sleeve pipe 221 center lines, entrance at sleeve pipe 221, its thermal boundary layer is thinner, Local Heat Transfer Coefficient is higher than the abundant development section of sleeve pipe 221 middle and lower parts, and the straight section 223 of insert 222 is placed the entrance of sleeve pipe 221, and it is thinner to take full advantage of entrance section thermal boundary layer, the characteristics that Local Heat Transfer Coefficient is larger, make on the less basis of sleeve pipe 221 pressure drop increases to have good heat exchange property, simultaneously, the straight section 223 of insert 222 so that the hydraulic diameter of sleeve pipe 221 reduce, thereby cause the coefficient of heat transfer to increase to some extent, and the pressure loss is also little; Outlet section thermal boundary layer at sleeve pipe 221 is thicker, the spiral section 224 of insert 222 is placed the outlet section of sleeve pipe 221, so that fluid produces a tangential speed component, its flowing velocity increases, especially near sleeve pipe wall place, the fluid that makes wall place shear stress increase, be caused by Secondary Flow mixes enhancing, and heat transfer effect is enhanced; By adjusting spiral section 224 length of respectively arranging heat exchanger tube 2 interior inserts 222, can control the flowing velocity of heat exchanger tube 2 interior air, thereby can control the tube wall temperature difference of heat exchanger tube 2, and heated air improves cost reduction, life, the overall performance of air preheater in the temperature difference of heat exchanger tube 2 import and exports.From smoke inlet 13 1 sides to exhanst gas outlet 14 1 sides, the percentage that each straight section 223 length of arranging insert 222 in the heat exchanger tube 2 accounts for overall length reduces gradually, because the straight section 223 of insert 222 is longer, heat exchanger tube 2 circulating resistances are just less, thereby the air mass flow that the heat exchanger tube 2 of close fume high-temperature side passes through is large, and the cooling that tube wall is subject to is just larger; And the air mass flow that the heat exchanger tube 2 of close flue gas low-temperature side passes through is little, and the cooling that tube wall is subject to is just smaller, thereby reaches the tube wall temperature difference of control heat exchanger tube 2, the purpose that the heated air of control has the identical import and export temperature difference; Heat exchanger tube 2 has identical wall temperature, and the material type selecting of heat exchanger tube 2 is convenient to unified, can reduce the use of exotic material, reduces the material cost of air preheater, also can improve the bulk life time of air preheater simultaneously; Simultaneously, interior temperature is high to cause burning out of heat exchanger tube 2 because managing can to avoid smoke inlet 13, also can avoid exhanst gas outlet 14 because of the excessively low dew point corrosion problem of bringing of temperature.
Above-mentioned is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction.Although the present invention discloses as above with preferred embodiment, yet is not to limit the present invention.Any those of ordinary skill in the art in the situation that does not break away from the technical solution of the present invention scope, can utilize the technology contents of above-mentioned announcement that technical solution of the present invention is made many possible changes and modification, or be revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not break away from technical solution of the present invention, all should drop in the scope of technical solution of the present invention protection any simple modification, equivalent variations and modification that above embodiment does according to the technology of the present invention essence.
Claims (6)
1. a heat exchanger tube capable of realizing same inlet/outlet temperature difference jet flow and insert Combined air preheater, comprise bellows (1) and many row's heat exchanger tubes (2), described bellows (1) are provided with cool air inlet (11) and hot air outlet (12), bellows (1) one side is provided with smoke inlet (13), bellows (1) opposite side is provided with exhanst gas outlet (14), described many row's heat exchanger tubes (2) are located in the bellows (1), it is characterized in that: described many row's heat exchanger tubes (2) are divided into jet band (21) and insert district (22), the side near smoke inlet (13) is located in described jet band (21), described insert district (22) is located at the side near exhanst gas outlet (14), described cool air inlet (11) is communicated with hot air outlet (12) after jet band (21) and insert district (22) successively, the heat exchanger tube (2) of described jet band (21) is comprised of coaxial sheathed inner tube (211) and outer tube (212), described inner tube (211) is for having the jet pipe of some spurt holes (213), the heat exchanger tube (2) in described insert district (22) comprises sleeve pipe (221), be inserted with insert (222) in the described sleeve pipe (221), described insert (222) is comprised of straight section (223) and spiral section (224), described straight section (223) places the entrance of sleeve pipe (221), and described spiral section (224) places the outlet section of sleeve pipe (221).
2. heat exchanger tube capable of realizing same inlet/outlet temperature difference jet flow according to claim 1 and insert Combined air preheater, it is characterized in that: from described smoke inlet (13) one sides to described exhanst gas outlet (14) one sides, the quantity of the upper set spurt hole (213) of inner tube (211) reduces gradually in each heat exchanger tube (2).
3. heat exchanger tube capable of realizing same inlet/outlet temperature difference jet flow according to claim 2 and insert Combined air preheater is characterized in that: described outer tube (212) upper end closed, described inner tube (211) lower end closed.
4. according to claim 1 each described heat exchanger tube capable of realizing same inlet/outlet temperature difference jet flow and insert Combined air preheater in 3, it is characterized in that: from described smoke inlet (13) one sides to described exhanst gas outlet (14) one sides, the percentage that each straight section (223) length of arranging insert (222) in the heat exchanger tube (2) accounts for overall length reduces gradually.
5. according to claim 1 each described heat exchanger tube capable of realizing same inlet/outlet temperature difference jet flow and insert Combined air preheater in 3, it is characterized in that: described cool air inlet (11) is positioned at the side near smoke inlet (13), and described hot air outlet (12) is positioned at the side near exhanst gas outlet (14).
6. heat exchanger tube capable of realizing same inlet/outlet temperature difference jet flow according to claim 4 and insert Combined air preheater, it is characterized in that: described cool air inlet (11) is positioned at the side near smoke inlet (13), and described hot air outlet (12) is positioned at the side near exhanst gas outlet (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110143940 CN102252340B (en) | 2011-05-31 | 2011-05-31 | Jet and insert combined air pre-heater capable of realizing same inlet/outlet temperature difference of gas in heat exchange pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110143940 CN102252340B (en) | 2011-05-31 | 2011-05-31 | Jet and insert combined air pre-heater capable of realizing same inlet/outlet temperature difference of gas in heat exchange pipes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102252340A CN102252340A (en) | 2011-11-23 |
| CN102252340B true CN102252340B (en) | 2013-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110143940 Expired - Fee Related CN102252340B (en) | 2011-05-31 | 2011-05-31 | Jet and insert combined air pre-heater capable of realizing same inlet/outlet temperature difference of gas in heat exchange pipes |
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| Country | Link |
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| CN (1) | CN102252340B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105222585A (en) * | 2015-10-12 | 2016-01-06 | 广东工业大学 | The combustion-supporting energy-saving aluminium-melting furnace of small-sized flue gas |
| CN105423753A (en) | 2015-11-19 | 2016-03-23 | 广东工业大学 | Continuous high-temperature low-oxygen combustion aluminum melting furnace with porous spraying pipe heat exchanger |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2031506U (en) * | 1988-02-24 | 1989-01-25 | 河北省张家口冶金制氧机备件厂 | Novel single tube member for insertion piece type heat exchanger |
| CN2190272Y (en) * | 1994-01-28 | 1995-02-22 | 姜同明 | Effective cast air preheater |
| RU2230258C1 (en) * | 2002-10-01 | 2004-06-10 | Курский государственный технический университет | Smoke suction jet-type air heater |
| CN201582842U (en) * | 2009-11-17 | 2010-09-15 | 中国石油化工集团公司 | Combined air preheater |
| CN102032825A (en) * | 2011-01-10 | 2011-04-27 | 天津商业大学 | Heat exchange tube for evaporator and evaporator formed by same |
| CN202074556U (en) * | 2011-05-31 | 2011-12-14 | 杭州美宝炉窑工程有限公司 | Inserter combination type air preheater with same-temperature-difference jet flow at inlets and outlets of heat exchange tubes |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09303829A (en) * | 1996-05-08 | 1997-11-28 | Daikin Ind Ltd | Ice making apparatus |
-
2011
- 2011-05-31 CN CN 201110143940 patent/CN102252340B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2031506U (en) * | 1988-02-24 | 1989-01-25 | 河北省张家口冶金制氧机备件厂 | Novel single tube member for insertion piece type heat exchanger |
| CN2190272Y (en) * | 1994-01-28 | 1995-02-22 | 姜同明 | Effective cast air preheater |
| RU2230258C1 (en) * | 2002-10-01 | 2004-06-10 | Курский государственный технический университет | Smoke suction jet-type air heater |
| CN201582842U (en) * | 2009-11-17 | 2010-09-15 | 中国石油化工集团公司 | Combined air preheater |
| CN102032825A (en) * | 2011-01-10 | 2011-04-27 | 天津商业大学 | Heat exchange tube for evaporator and evaporator formed by same |
| CN202074556U (en) * | 2011-05-31 | 2011-12-14 | 杭州美宝炉窑工程有限公司 | Inserter combination type air preheater with same-temperature-difference jet flow at inlets and outlets of heat exchange tubes |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平9-303829A 1997.11.28 |
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| CN102252340A (en) | 2011-11-23 |
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