CN101907417A - Firetube heat exchanger - Google Patents
Firetube heat exchanger Download PDFInfo
- Publication number
- CN101907417A CN101907417A CN2010101978314A CN201010197831A CN101907417A CN 101907417 A CN101907417 A CN 101907417A CN 2010101978314 A CN2010101978314 A CN 2010101978314A CN 201010197831 A CN201010197831 A CN 201010197831A CN 101907417 A CN101907417 A CN 101907417A
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- China
- Prior art keywords
- fin
- heat exchanger
- exchanger according
- firetube
- row
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/06—Flue or fire tubes; Accessories therefor, e.g. fire-tube inserts
-
- 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
- F28F13/14—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by endowing the walls of conduits with zones of different degrees of conduction of heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0024—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for combustion apparatus, e.g. for boilers
-
- 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
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2215/00—Fins
- F28F2215/04—Assemblies of fins having different features, e.g. with different fin densities
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a kind of Firetube heat exchanger, especially a kind of Firetube heat exchanger with elongated cylindrical housing, it is characterized in that, the elongated U-shaped fin of a plurality of circular row, each fin all have the inner surface of the cylindrical housings of being fixed to and preferably according to certain radius crooked or flat bottom surface and from the bottom surface upwardly extending two flat planes and preferably parallel side, the fin in every row all aligns substantially parallel along the axis of cylindrical housings.
Description
Technical field
The present invention relates to a kind of Firetube heat exchanger.
Background technology
As everyone knows, Firetube heat exchanger is used for heat is transferred to from the hot gas of burning the material (liquid typically) of the outer surface that is exposed to fire tube.U.S. Patent No. 5,913 has been described this heat exchanger in 289 and No.6,675,746.The Firetube heat exchanger of describing before these and other manufactures relatively costly or difficult.In addition, some Firetube heat exchangers are in that heat is transferred to outer surface from the hot gas of burning through the inside of fire tube is not too effective aspect heating liquid.Equipment described herein is at a kind of improved, efficiently and the fire tube design of making of relatively economical ground.
Summary of the invention
The embodiment of Firetube heat exchanger described herein comprises elongated cylindrical housings, and this housing has fluid intake end, fluid outlet and is fixed on heat sink assembly on the inner surface of housing.Heat sink assembly comprises the elongated U-shaped fin of a plurality of circular row, and each fin all has the bottom surface of the inner surface that is fixed to housing and from upwardly extending two the flat substantially planar side of bottom fin surface.Fin in every row all aligns substantially parallel along the axis of cylindrical housings, and the fin in delegation or the multirow fin can be offset with the fin in the adjacent delegation fin angledly.In some embodiments, the flat planar side of fin is substantially parallel, and the fin in every capable fin is basic identical respectively on fin height, length and width.In other embodiments, the size of the fin at least two row is different on height and/or width and/or length.In another embodiment, in Firetube heat exchanger, use three kinds or more kinds of different fin height.Hereinafter will be described in these and other modification in the design of the design of fin and embodiment and Firetube heat exchanger.
Description of drawings
Fig. 1 is the isometric view of an embodiment of fire tube, shows semi-transparent circle cylindricality shell.
Fig. 2 is the cross section isometric view that the line 2-2 along an embodiment of fire tube cuts open, and it shows, and inner fin is arranged and design.
Fig. 3 is the end-view of fin and shows three kinds of different fin height.
Fig. 4 is the side view of fin shown in Figure 3, shows three kinds of different fin numbers of altitude equally.
Fig. 5 is the cross-sectional view of cutting fire tube open that Fig. 2 of inner ceramic plug is installed.
The specific embodiment
An embodiment is the Firetube heat exchanger that comprises shell.Along the inner surface setting of housing be heat sink assembly, this heat sink assembly has the elongated U-shaped fin of a plurality of circular row.In one embodiment, each fin all has the bottom surface of the inner surface that is fixed to described cylindrical housings.Each fin also can have two sides that extend upward and limit elongated inner passage from described bottom surface.These sides can be the plane and flat.In addition, in one embodiment, the fin in every row all can align substantially parallel along the axis of cylindrical housings.In one embodiment, the side of the fin in the different rows has different height.
In Fig. 1, Firetube heat exchanger assembly 10 is shown as has cylindrical housings 11, and in order to observe inner fin, this cylindrical housings is shown as translucent.And with reference to the cross-sectional view of figure 2, wherein, cylindrical housings is cut open, so that the feature more specifically of heat sink assembly to be shown.
Go out as shown, heat sink assembly is circumferentially fixing around the inner surface of cylindrical housings, and comprises the elongated U-shaped fin of a plurality of circular row.In illustrated embodiment, the fin in every row is basic identical respectively, and the fin of three kinds of differing heights is used in the different rows of fin.The first row fin of the fluid intake end 13 of the most close housing 11 comprises that essentially identical fin 12, the second row comprise essentially identical fin 14, and the third line and residue row are made up of essentially identical fin 16.In this embodiment, the different height that are its upwardly extending side between the fin 12,14 and 16.In this embodiment, the fin side is lower in the front portion of the hottest fire tube of gas temperature.
Though can use different fin length in the different rows, the length of the fin of all row can be identical.Yet all fin in any single file can have essentially identical length.Similarly, though can use different fin width, the width of the fin in any row can be identical.Yet in some embodiments, all fin in the delegation all have essentially identical width.In other embodiments, all fin in all row of fire tube all have essentially identical width.
Fig. 3 and Fig. 4 further show the difference in height of side of the fin of different rows.The opposite flank 22 of fin 20 is identical with 24 height.Yet the top edge 21 of all fin 12 of first row in the fin is all short than the height of the side of the fin in row 14 and 16.Especially, the top edge 23 of the side 22,24 of all second row fin 14 is all long and have a height of the fin in the residue multirow fin of top edge 25 than the third line fin 16 and all short than the height of the fin in the row 12.
In one embodiment, the height of fin differs 10% to 50%.In another embodiment, the height of fin differs 15% to 35%.In another embodiment, the height of fin differs 20% to 30%.In one embodiment, delegation's fin is 0.5 inch high, and the second row fin is 5/8 inch high, and the fin in the third line and the residue multirow is 0.75 inch high.In one embodiment, it is higher by 25% than previous row to walk to the every capable fin of the third line from first.
As previously mentioned, and specifically as shown in Figure 3, all fin all have essentially identical width, and are the U-shapeds with bottom surface 26.The bottom fin surface is flat substantially or preferably with certain radius (radioactive) bow or bending, is positioned at the radius or the curvature of cylindrical surface of the housing of fin surface below, bottom with coupling better.This radiant type bottom surface also will help the brazing (brazing) of fin and cylindrical surface.This flat or crooked bottom is also in position providing the surface with each fin tack welding or spot welding in the process of assembling Firetube heat exchanger.
In another embodiment, relative fin side is parallel, and from the bottom surface substantially vertically (orthogonally) extend upward.Yet relative side also can slightly become obtuse angle or acute angle with the bottom surface.This angle can be selected at interval according to the desired amt of the fin in every row and the expectation of the fin in every row.The concrete quantity that should also be understood that the fin in every row will depend on the width of fin and the radial dimension or the girth of cylindrical housings.
In this embodiment, the fin in each row longitudinally aligns along the mode that the axis of cylindrical housings aligns substantially parallel with their upwardly extending sides.As noted earlier, the arrival end place that the shortest fin in each row fin or fin are positioned at fire tube, and the fin in the subsequent rows has higher side.Concrete kind of number of the fin of differing heights in the fire tube can be selected, still, at least two kinds of different height can be used.In another embodiment, use the fin of at least three kinds of differing heights, but also can use how different height not deviating under the prerequisite of the present invention.In illustrated embodiment, use three kinds of different height, as previously mentioned and shown in Fig. 1 to Fig. 4.
Fin in the adjacent multirow fin can align along the length of fire tube angledly, and the fin in the perhaps adjacent multirow fin is the skew of angle ground each other.Certainly, if the fin in the adjacent multirow fin has different width, the upwardly extending side of the fin in the so adjacent multirow exports the skew that will have the fin side along the length of fire tube from entering the mouth to.In one embodiment, because fin has essentially identical width, so fin can align with not being offset angledly, perhaps these fin half mode that can reach the fin width is offset angledly.
The concrete quantity of the row of fin will depend on the length of fire tube and the length of the fin in the different rows fin.The line number of fin preferably walks between about 20 row 2, and more preferably about 4 walk to the fin of about 12 row, and fin still less causes along the bigger thermal stress of fire tube.Mode with example there is shown, and for about 2 feet long fire tubes, has 10 row fin, and the fin in every row all has equal fin length.
The top edge of upwardly extending fin limits elongated inner passage, be fixed with the refractory insert that is commonly referred to as plug (core plug) in this inner passage, and this refractory insert is made by heat resisting ceramic materials typically.The length of insert can extended between second row fin and the last multirow fin at the port of export of arrival end, as shown in Figure 5.The shape of insert makes diameter increase gradually from the front end of the fluid intake of close fire tube, part for the length of insert, leave the space between the top edge of the surface of insert and fin side, so and along the contact heat spreader of the part in succession edge of fire tube length.Those skilled in the art can understand this shape, its size and the layout of insert well.
In another embodiment, the Firetube heat exchanger assembly is included in the copper ring that extends between each row fin and the fire tube surface.The mode that these copper rings can each ring contact with the end of the inside on the surface of fire tube and the fin in the adjacent multirow is installed between all capable fin.At least one ring can be installed in the place, end of last column fin.In another embodiment, a plurality of copper rings are installed in the place, end of last column fin.In Fig. 2, show copper ring 30,31,32,33,34,35.In the mode of example and for brevity, only show the copper ring between the fin in every line, still, in addition, can be provided with ring between every capable fin.These copper rings can use the brazing in vacuum brazing or the hydrogen stove to install, and perhaps install by other brazing technologies well known by persons skilled in the art.
In one embodiment, these rings comprise high-purity (more than 98%) copper, because the ductility of this copper and thermal conductivity.Yet, do not get rid of the mixture that uses copper and another kind of heat-conducting metal (for example, nickel).Should be understood that when the brazing copper ring this copper ring will melt and flow to two row fin and inner surface of tube, form heat conduction and malleable bond betwixt.Since will the brazing copper ring, so the shape of cross section of these copper rings before brazing is not crucial.
Firetube heat exchanger described herein all is useful at any heat-exchange apparatus that is used for liquid that heat is contacted with the outer surface of fire tube with heating from the hot gas of burning along the guiding of the inside of fire tube.This fire tube boiler or for example the GAX absorption system (such as U.S. Patent No. 6,487,875, No.6,427,478, No.6,718,792, No.6,735,963 and No.6, describe in 748,752) the stripping section (strippingsection) of generator of aqua-ammonia absorption system in be particularly useful.Compare with using other also known fire tube in the prior art, Firetube heat exchanger described herein has to manufacture saves cost, reliable and effective advantage.
Claims (45)
1. Firetube heat exchanger comprises:
Elongated cylindrical housings has the arrival end and the port of export; And
Heat sink assembly, be fixed on the inner surface of described housing, described heat sink assembly comprises the elongated U-shaped fin of a plurality of circular row, two flat planar side that each fin all has the bottom surface of the inner surface that is fixed to described cylindrical housings and extends upward and limit elongated inner passage from described bottom surface
Wherein, the described fin in every row all aligns substantially parallel along the axis of described cylindrical housings.
2. Firetube heat exchanger according to claim 1, wherein, the bottom surface of each described fin includes flat substantially plane surface.
3. Firetube heat exchanger according to claim 1, wherein, the bottom surface of described fin is with the certain radius bending.
4. Firetube heat exchanger according to claim 1, wherein, the fin in every capable fin is respectively essentially identical.
5. Firetube heat exchanger according to claim 1, wherein, the height of the fin in other row fin of aspect ratio of the fin in the first row fin of neighboring entry is low.
6. Firetube heat exchanger according to claim 5, comprise triplex row or multirow fin more, and wherein, the fin in the described first row fin of the aspect ratio of the fin from the second row fin of described arrival end is high and lower than the height of the fin in follow-up delegation or the multirow fin.
7. Firetube heat exchanger according to claim 5 comprises 2 to 20 fin of going.
8. Firetube heat exchanger according to claim 5 comprises 4 to 12 fin of going.
9. Firetube heat exchanger according to claim 6 comprises 4 to 12 fin of going.
10. Firetube heat exchanger according to claim 1, wherein, the fin in fin in delegation or the multirow fin and the adjacent delegation fin is offset angledly.
11. Firetube heat exchanger according to claim 1, wherein, the height of the side of all fin in delegation's fin all equates.
12. Firetube heat exchanger according to claim 1, wherein, the width of all fin in delegation's fin all equates.
13. Firetube heat exchanger according to claim 1, wherein, the width of all fin all equates.
14. Firetube heat exchanger according to claim 11, wherein, the width of all fin all equates.
15. Firetube heat exchanger according to claim 10, wherein, the height of the side of all fin in delegation's fin all equates.
16. Firetube heat exchanger according to claim 10, wherein, the width of all fin in delegation's fin all equates.
17. Firetube heat exchanger according to claim 10, wherein, the width of all fin all equates.
18. Firetube heat exchanger according to claim 13, wherein, the fin in the adjacent multirow fin is offset in half the mode that reaches described fin width angledly.
19. Firetube heat exchanger according to claim 18, wherein, the height of the side of all fin in delegation's fin all equates.
20. Firetube heat exchanger according to claim 18, wherein, the height of the fin in other row fin of aspect ratio of the fin in the first row fin of adjacent fluid inlet is low.
21. Firetube heat exchanger according to claim 20, wherein, the height of the side of all fin in delegation's fin all equates.
22. Firetube heat exchanger according to claim 1, wherein, the length of all fin in delegation's fin all equates.
23. Firetube heat exchanger according to claim 1, wherein, the length of all fin in the delegation all equates, and two different row or more the length of the fin in the multirow be different.
24. Firetube heat exchanger according to claim 1, wherein, the length of all fin is all to equate.
25. Firetube heat exchanger according to claim 24, wherein, the height of the side of all fin in delegation's fin all equates.
26. Firetube heat exchanger according to claim 24, wherein, the width of all fin in delegation's fin all equates.
27. Firetube heat exchanger according to claim 24, wherein, the width of all fin all equates.
28. Firetube heat exchanger according to claim 24, wherein, the fin in the adjacent multirow fin is offset in half the mode that reaches described fin width angledly.
29. Firetube heat exchanger according to claim 24, wherein, the height of the side of all fin in delegation's fin all equates.
30. Firetube heat exchanger according to claim 24, wherein, the height of the fin in other row fin of aspect ratio of the fin in the first row fin of adjacent fluid inlet is low.
31. Firetube heat exchanger according to claim 4, wherein, the height of the fin in other row fin of aspect ratio of the fin in the first row fin of adjacent fluid inlet is low.
32. Firetube heat exchanger according to claim 31 comprises 4 to 20 fin of going, and wherein, the height of the fin in the 3rd row and the follow-up multirow fin equates.
33. Firetube heat exchanger according to claim 32, wherein, the fin in fin in delegation or the multirow fin and the adjacent delegation fin is offset angledly.
34. Firetube heat exchanger according to claim 32, wherein, the fin in the adjacent multirow fin is offset in half the mode that reaches described fin width angledly.
35. Firetube heat exchanger according to claim 1, wherein, two sides of each described fin are substantially parallel.
36. Firetube heat exchanger according to claim 2, wherein, two sides of each described fin are substantially parallel and perpendicular to described bottom surface.
37. Firetube heat exchanger according to claim 2, wherein, two sides of each described fin extend upward from described bottom surface with acute angle or obtuse angle.
38. Firetube heat exchanger according to claim 3, wherein, two sides of each described fin are substantially parallel.
39. Firetube heat exchanger according to claim 3, wherein, two sides of each described fin extend upward from described bottom surface with acute angle or obtuse angle.
40. Firetube heat exchanger according to claim 1 further comprises the refractory insert that is provided with one heart along the part of the length of described inner passage.
41. Firetube heat exchanger according to claim 1 further comprises the heat conduction ring of a plurality of brazings, described heat conduction ring forms heat conduction and malleable bond between the described fin of the inner surface of described cylindrical housings and adjacent multirow.
42., comprise the heat conduction ring of the described brazing between the described fin of all adjacent multirows according to the described Firetube heat exchanger of claim 41.
43., comprise along the inner surface of described cylindrical housings and the heat conduction ring of one or more brazings between last column fin and described fluid outlet according to the described Firetube heat exchanger of claim 41.
44. a Firetube heat exchanger comprises:
Elongated housing has the arrival end and the port of export; And
Heat sink assembly is fixed on the inner surface of described housing, and described heat sink assembly comprises first row and the second row U-shaped elongate fins, and each fin all has at least one planar side that extends upward and limit elongated inner passage from described inner surface,
Wherein, the described first row fin is adjacent with described arrival end, and wherein, the described second row fin is than the described first row fin height.
45. according to the described Firetube heat exchanger of claim 44, wherein, every capable elongate fins is all alignd substantially parallel along the central axis of described cylindrical housings.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/478,643 US20100307729A1 (en) | 2009-06-04 | 2009-06-04 | Firetube heat exchanger |
US12/478,643 | 2009-06-04 |
Publications (1)
Publication Number | Publication Date |
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CN101907417A true CN101907417A (en) | 2010-12-08 |
Family
ID=43262945
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2010101978314A Pending CN101907417A (en) | 2009-06-04 | 2010-06-03 | Firetube heat exchanger |
Country Status (5)
Country | Link |
---|---|
US (1) | US20100307729A1 (en) |
CN (1) | CN101907417A (en) |
AU (1) | AU2010202182A1 (en) |
CA (1) | CA2706122A1 (en) |
MX (1) | MX2010006119A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103946659A (en) * | 2011-11-08 | 2014-07-23 | 开利公司 | Heat exchanger and method of making thereof |
CN105121978A (en) * | 2013-03-04 | 2015-12-02 | 洛基研究公司 | Co-fired absorption system generator |
CN110998208A (en) * | 2017-08-18 | 2020-04-10 | 泰而勒商用食品服务公司 | Heat exchanger and method for manufacturing the same |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITUB20155713A1 (en) * | 2015-11-18 | 2017-05-18 | Robur Spa | IMPROVED FLAME TUBE. |
BE1024621B1 (en) * | 2016-10-03 | 2018-05-24 | Safran Aero Boosters S.A. | AIR HEAT EXCHANGER MATRIX AIR TURBOJET OIL |
EP3702713A4 (en) * | 2017-10-27 | 2021-11-24 | China Petroleum & Chemical Corporation | Enhanced heat transfer pipe, and pyrolysis furnace and atmospheric and vacuum heating furnace comprising same |
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2009
- 2009-06-04 US US12/478,643 patent/US20100307729A1/en not_active Abandoned
-
2010
- 2010-05-28 AU AU2010202182A patent/AU2010202182A1/en not_active Abandoned
- 2010-06-03 MX MX2010006119A patent/MX2010006119A/en not_active Application Discontinuation
- 2010-06-03 CN CN2010101978314A patent/CN101907417A/en active Pending
- 2010-06-04 CA CA2706122A patent/CA2706122A1/en not_active Abandoned
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US2473633A (en) * | 1946-03-20 | 1949-06-21 | Brown Fintube Co | Method of welding fins to tubular members by electric resistance welding |
US2930405A (en) * | 1955-05-31 | 1960-03-29 | Brown Fintube Co | Tube with internal fins and method of making same |
US3528496A (en) * | 1967-11-03 | 1970-09-15 | Union Carbide Corp | Plate-fin heat exchanger |
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WO1990002916A1 (en) * | 1988-09-12 | 1990-03-22 | Gadelius Sunrod Ab | A heat exchanger tube with surface enlarging elements |
US4960170A (en) * | 1989-01-26 | 1990-10-02 | Carter James I | Finned tube and method of making the same |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103946659A (en) * | 2011-11-08 | 2014-07-23 | 开利公司 | Heat exchanger and method of making thereof |
US9943088B2 (en) | 2011-11-08 | 2018-04-17 | Carrier Corporation | Heat exchanger and method of making thereof |
CN109140833A (en) * | 2011-11-08 | 2019-01-04 | 泰而勒商用食品服务公司 | Heat exchanger and its manufacturing method |
US10785992B2 (en) | 2011-11-08 | 2020-09-29 | Taylor Commercial Foodservice, Llc | Heat exchanger and method of making thereof |
US11278040B2 (en) | 2011-11-08 | 2022-03-22 | Taylor Commercial Foodservice, Llc | Heat exchanger and method of making thereof |
CN105121978A (en) * | 2013-03-04 | 2015-12-02 | 洛基研究公司 | Co-fired absorption system generator |
CN110998208A (en) * | 2017-08-18 | 2020-04-10 | 泰而勒商用食品服务公司 | Heat exchanger and method for manufacturing the same |
Also Published As
Publication number | Publication date |
---|---|
US20100307729A1 (en) | 2010-12-09 |
MX2010006119A (en) | 2010-12-15 |
AU2010202182A1 (en) | 2010-12-23 |
CA2706122A1 (en) | 2010-12-04 |
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