GB2158569A - A gas-to-gas heat exchanger - Google Patents
A gas-to-gas heat exchanger Download PDFInfo
- Publication number
- GB2158569A GB2158569A GB08411156A GB8411156A GB2158569A GB 2158569 A GB2158569 A GB 2158569A GB 08411156 A GB08411156 A GB 08411156A GB 8411156 A GB8411156 A GB 8411156A GB 2158569 A GB2158569 A GB 2158569A
- Authority
- GB
- United Kingdom
- Prior art keywords
- corrugations
- heat exchanger
- sheets
- sheet
- gas flow
- 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.)
- Withdrawn
Links
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
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/06—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material
- F28F21/065—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material the heat-exchange apparatus employing plate-like or laminated conduits
-
- 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
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
- F28D9/0037—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the conduits for the other heat-exchange medium also being formed by paired plates touching each other
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
- F28F2250/10—Particular pattern of flow of the heat exchange media
- F28F2250/108—Particular pattern of flow of the heat exchange media with combined cross flow and parallel flow
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
A gas-to-gas heat exchanger is formed of a multiplicity of identical vacuum moulded plastics sheets (10) which are stacked together. The sheets (10) are hexagonal in shape and are each provided with corrugations (20 and 21) in respective end regions and corrugations (17) in an intermediate region. Selected edges of adjacent sheets (10) are sealed together so as to define gas inlets (29 and 30) and gas outlets (28 and 31) for the heat exchange gases at different edges of the stack of sheets (10). The corrugations (17, 20 and 21) and orientation of the sheets (10) are such as to define cross-current flow heat exchange portions in the regions of the inlets (29 and 30) and outlets (28 and 31) and an intermediate counter-current flow heat exchange portion. <IMAGE>
Description
SPECIFICATION
A gas-to-gas heat exchanger
This invention relates to a heat exchanger and is more particularly concerned with a gas-to-gas heat exchanger particularly, but not exclusively, for use in a dehumidifier, air conditioning or in a waste heat recovery system.
It is an object of the present invention to provide a low-cost, gas-to-gas heat exchanger.
According to the present invention, there is provided a gas-to-gas heat exchanger comprising a multiplicity of sheets having corrugations therein, the sheets being disposed in a stack so that the corrugations in adjacent sheets abut against each other to define gas flow paths, the gas flow paths between each pair of sheets having a gas inlet and a gas outlet and the gas flow paths being arranged to permit counter-current gas flow through at least a portion of the heat exchanger.
The above defined heat exchanger can be manufactured very simply from sheets of, for example, plastics material by a simple manufacturing process, for example vacuum moulding.
Preferably also, the sheets of the stack are identical so that only one die is required to manufacture all of the sheets used in the heat exchanger.
In one embodiment, each sheet has an intermediate section provided with corrugations which extend in a direction to permit counter-current gas flow between the gases, and end sections provided with corrugations which communicate with the corrugations in the intermediate section but which are inclined with respect thereto. Such an arrangement allows adjacent sheets to be so mutually orientated that the required counter-current gas flow can be obtained in an intermediate section of the heat exchanger whilst a cross-current gas flow is obtained at the end sections of the heat exchanger leading to the inlets and the outlets. The inlets and the outlets for the gases can therefore be physically separated to facilitate separation of the gas flows into and out of the heat exchanger.
In another embodiment, each sheet has a section provided with corrugations which are arranged to permit countercurrent gas flow, said corrugations extending to or adjacent a peripheral edge of the sheet, and another section wherein the corrugations permit cross-current gas flow, said corrugations communicating with the corrugations of the first mentioned section and terminating at or adjacent another peripheral edge of the sheet.
With the heat exchanger according to the present invention, the number of sheets employed depends upon the required throughput and it is envisaged that such sheets could be stacked together and secured as necessary on site if desired.
Conveniently, the sheets in the heat exchanger are arranged so that the crests of the corrugations in one sheet engage with the crests of the corrugations in an adjacent sheet. Preferably, those corrugations which define the counter-current gas flow have flat crests for engagement with corresponding flat crests of corrugations on an adjacent sheet.
Usually, a layer of adhesive will be provided on at least some of the crests of the corrugations of at least one of each pair of adjacent sheets so as to ensure that adjacent sheets are secured together at the crests of the corrugations.
In an alternative embodiment of the above-described embodiments where a cross-current gas flow is obtained, it is within the scope of the present invention to provide corrugations only at regions of the sheet where counter-current gas flow is required and to provide a portion of the sheet with a recess to define a plain manifold portion with which the corrugations in the sheet communicate. However, such manifold portion may, instead of being absolutely plain, be partially corrugated if desired or may contain a suitably configured insert. Such an insert would serve to separate adjacent sheets.
Instead of being adhesively secured together, for example by roller-coating with adhesive, the sheets could be welded together, e.g. by an ultrasonic welding technique.
Embodiments of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:
Figure l is a schematic plan view of a heat exchanger according to the present invention shown installed in air trunking,
Figure 2 is a section in the line A-A of Figure 1,
Figure 3 is a section on the line B-B of Figure 1,
Figure 4 is a schematic plan view of an alternative form of sheet used in the manufacture of a heat exchanger also according to the present invention, and
Figure 5 is a schematic illustration showing the manner in which gas flow occurs with a heat exchanger employing a stack of sheets as illustrated in Figure 4.
Referring now to Figures 1 to 3, the heat exchanger is an air-to-air heat exchanger composed of a multiplicity of sheets 10 formed by a vacuum moulding technique from PVC sheet having a thickness of down to 0.1 mm, in this embodiment 0.25 mm. Each sheet 10 is identical and is of hexagonal shape with two peripheral side edges 11 and 12 which are longer than peripheral end edges 13, 14, 15 and 16. Each sheet 10 has an intermediate portion 14 formed with a series of corrugations 17 therein which extend parallel to the side edges 11 and 12. These corrugations 17 have flat crests 18 and mutually inclined straight side edges 19.
Each end of each corrugation 17 communicates with a respective corrugation 20, 21 is a respective end portion of each sheet 10. The corrugations 20 and 21 are inlcined in opposite directions at an angle of 45 to the corrugations 17. The corrugations 20 terminates just short of the end edge 14 and extend parallel to the end edge 13, whilst the corrugations 21 terminate just short of the end edge 16 and extend parallel to the end edge 15.
During manufacture of the heat exchanger, the sheets 10 are stacked one on top of the other with alternate sheets being reversed so that the side edge 11 of each sheet lies between the side edges 12 of the sheets immediately above and below first mentioned sheet. This has the effect of causing the corrugations 20 and 21 to extend at right angles to the respective corrugations 20 and 21 in the adjacent sheets. In order to maintain the sheets 10 in the desired relative positions, the crests of all of the corrugations 17, 20 and 21 are roller coated with adhesive so that when the sheets 10 are bought together, they are adhesively secured together. Additionally, and as shown in Figure 2, the side edges 11 and 12 of pairs of adjacent sheets are heat sealed. This defines open recesses 25 between the pairs of sealed side edges 11 and 12.For ease of understanding the construction, it will be seen that in Figures 2 and 3, the corresponding side edges of the sheets have been distinguished so that the sheet 10 lying immediately under that illustrated in plan view in Figure 1 has edges bearing the same number but suffixed by the letter a.
The next underlying sheet 10 has edges bearing the same reference numerals but suffixed by the letter b and so on. Thus, as can be seen from Figure 2, side edges 11 and 12 are heat sealed with side edges 12a and 11a, respectively, and side edges 11b and 12b are heat sealed with side edges 12c and 11 c, respectively. With such an arrangement, there is defined a row of first gas flow paths 26 defined between each pair of sheets whose side edges are secured together and a row of second gas flow paths 27 which alternate with the gas flow paths 26 and which are defined between adjacent pairs of sheets 10 whose side edges are not secured together. The flow paths 26 and 27 extend parallel to each other so as to permit counter-current gas flow.
Referring now to Figure 3, the pair of sheets 10 whose side edges 11 and 12a and 12 and 11a are respectively secured together, also have their end edges 13 and 14a, and 15 and 16a (not shown) secured together whilst the end edges 14 and 13a, and 16 and 15a (not shown) are not secured together so as to define outlets 28 and inlets 29, respectively.
The adjacent sheets 10 whose side edges are not secured together have their end edges sealed in the opposite sence. Thus, for example, end edges 13a and 14b are sealed whilst edges 14a and 13b are not sealed together. Similarly, edges 16a and 15b are sealed together whilst edges 15a and 16b are not sealed together. Such an arrangement defines a series of inlets 30 and a series of outlets 31 at opposite ends of the stack of sheets 10.
In use, the above described heat exchanger is installed in a conduit C so that the side edges 11 and 12 abut against the side walls of the conduit C which is divided centrally by a longitudinally partition 32 sealed with the stack of sheets 10 by seals 33. The side walls of the conduit C serve to close the open recesses 25 which are thereby usable as further gas flow paths to supplement the gas flow paths 27. Hot air is passed into the heat exchanger through inlet 30 and passes out through outlet 31.
At the same time, cold air to be heated passes into the heat exchanger through inlet 29 and out of the heat exchanger through outlet 28. As will be appreciated from the above description, each air flow, as it enters the heat exchanger either through inlet 30 or inlet 29, passes relative to the other gas leaving the heat exchanger in a cross-flow fashion.
After this cross-flow section, each gas enters a respective one of the mutually counter-current first and second gas flow paths 26 and 27 before entering the other cross-flow section and finally leaving the heat exchanger. As can be seen from Figure 1, each of the first and second gas flow paths 27 defined by the corrugations 17 occupies the major portion of the total gas flow through the heat exchanger. This is advantageous since a counter-current flow provides a more effective way of transferring heat than a cross-flow system.
In a particular embodiment, each sheet 10 has a width of 0.3 metres and a maximum length of 0.6 metres. The section of the heat exchanger over which counter-current gas flow occurs has an area of 0.3 metres by 0.3 metres. Each sheet has 19 corrugations or channels. The angle of the side walls of the corrugations of channels is 45o. The pitch of the corrugations is 10 mm in the cross-current flow section and 14.1 mm in the counter-current gas flow section. The total heat exchange surface area for a heat exchanger thickness of 0.3 metres (60 sheets) is 9.34 square metres.In a test using such a heat exchanger, air was passed into the inlet 30 at a temperature of 30.8"C, and left the heat exchanger via outlet 31 at a temperature of 20.8 C, whilst cool air at a temperature of 16.1"C entered the heat exchanger via inlet 29 and left the heat exchanger via outlet 28 at a temperature of 25.7"C.
The flow rates of the hot and cold air were 0.0594 kg per second and 0.0638 kg per second respectively.
The pressure drop experienced by the hot air passing through the heat exchanger was found to be 33.5 Pascals whilst the pressure drop experienced by the cold air being passed through the heat exchanger was 50 Pascals.
Referring now to Figures 4 and 5, the heat exchanger is made up of a plurality of sheets 110 which are of rectangular form, with side edges 111 and 112 and end edges 113 and 114. Like the sheets 10, the sheets 110 are all identical and are vacuum moulded from 0.25 mm thick PVC. Each sheet 110 has a series of corrugations 117 which extend parallel to the side edges 111 and 112. The corugations 117 terminate the end edge 113 at one of their ends and coincide with the ends of respective transverse corrugations 120 extending at right angles to the corrugations 117. The ends of the corrugations 120 remote from the corrugations 117 terminate adjacent the side edge 111.
The side edges of adjacent pairs of sheets 110 are sealed together in a similar manner to that described above for the sheets 10, with alternate sheets being orientated so that the corrugations 120 lie across the corrugations 117 of the adjacent sheets 110, the side edges 111 and 112 of the sheets 110 being alternatively only partly longitudinally sealed so as to define outlets 128 and 131.
Alternate pairs of end edges 113 and 114 are sealed together so as to define inlets 130 and 129 at opposite ends of the heat exchanger. The pre cise manner in which the various edges of the sheets 110 are sealed will be apparent from the above description with reference to Figures 1 to 3 and from a study of Figure 5 showing the air flow paths obtained.
In this embodiment, hot air enters the heat exchanger via inlet 130, passes through a cross-current gas flow section 134, then through a countercurrent gas flow section 135 and finally through another cross-current gas flow section 136 before leaving the heat exchanger via outlet 131. In a similar manner, cold air enters the heat exchanger via inlet 129 and passes serially through the cross-current gas flow section 136, the counter-current gas flow section 135 and the cross-current gas flow section 134 before leaving the heat exchanger via outlet 128.
In the above described arrangement, the heat exchanger of Figures 4 and 5 has the advantage over that of Figures 1 to 3 that, because the sheets 110 are rectangular in shape, the manufacture of such sheets can be less wasteful of plastics material and, furthermore, the assembled heat exchanger can be conveniently located in a rectangular box.
Further, the heat exchanger of Figures 4 and 5 can be used in situations where it is not possible or desired to arrange for a counter-current flow of gases to and from the heat exchanger.
In the above described embodiments, where the hot air to be cooled in the heat exchanger is one which is likely to contain moisture, it is preferred to orientate the heat exchanger so that any water which becomes condensed is able to flow out of the heat exchanger under the action of gravity.
Also, in the above disclosed embodiments, the gas flow paths through the heat exchanger are realtively smooth. It is, however, within the scope of the invention to provide dimples or other formations in the walls of the corrugations to promote turbulence in the gas flow to improve the heat transfer characteristics. Alternatively, a separate turbulence promoter, e.g. a twisted tape or wire loop device may be provided in the gas flow paths of the heat exchanger, such devices being preferably installed in the corrugations at the desired locations before the sheets are secured together.
Claims (9)
1. A gas-to-gas heat exchanger comprising a multiplicity of sheets having corrugations therein, the sheets being disposed in a stack so that the corrugations in adjacent sheets abut against each other to define gas flow paths, the gas flow paths between each pair of sheets having a gas inlet and a gas outlet and the gas flow paths being arranged to permit counter-current gas flow through at least a portion of the heat exchanger.
2. A heat exchanger as claimed in Claim 1, wherein the corrugated sheets are so formed and mutually disposed as to define a pair of cross-current flow heat-exchange regions and an intermediate counter-current flow heat-exchange region.
3. A heat exchanger as claimed in Claim 1 or 2, wherein the sheets of the stack are identical so that only one die is required to manufacture all of the sheets used in the heat exchanger.
4. A heat exchanger as claimed in any preceding claim, wherein each sheet has an intermediate section provided with corrugations which extend in a direction to permit counter-current gas flow between the gases, and end sections provided with corrugations which communicate with the corrugations in the intermediate section but which are inclined with respect thereto.
5. A heat exchanger as claimed in any one of claims 1 to 4 wherein each sheet has a section provided with corrugations which are arranged to permit countercurrent gas flow, said corrugations extending to or adjacent a peripheral edge of the sheet, and another section wherein the corrugations permit cross-current gas flow, said corrugations communicating with the corrugations of the first mentioned section and terminating at or adjacent another peripheral edge of the sheet.
6. A heat exchanger as claimed in any preceding claim wherein the sheets are arranged so that the crests of the corrugations in one sheet engage with the crests of the corrugations in an adjacent sheet.
7. A heat exchanger as claimed in claim 6, wherein those corrugations which define the counter-current gas flow have flat crests which are in engagement with corresponding flat crests of corrugations on an adjacent sheet.
8. A heat exchanger as claimed in Claim 1, wherein the corrugations are provided only at regions of the sheet where counter-current gas flow is required and a portion of the sheet with a recess defines a manifold portion with which the corrugations in the sheet comunicate.
9. A gas-to-gas heat exchanger substantially as hereinbefore described with reference to Figures 1 to 3 or Figures 4 and 5 of the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08411156A GB2158569A (en) | 1984-05-01 | 1984-05-01 | A gas-to-gas heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08411156A GB2158569A (en) | 1984-05-01 | 1984-05-01 | A gas-to-gas heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB8411156D0 GB8411156D0 (en) | 1984-06-06 |
| GB2158569A true GB2158569A (en) | 1985-11-13 |
Family
ID=10560357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08411156A Withdrawn GB2158569A (en) | 1984-05-01 | 1984-05-01 | A gas-to-gas heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2158569A (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4327857A1 (en) * | 1992-08-28 | 1994-03-03 | Rekuper Miroslav Moravec Liber | Gas-to-gas heat-exchanger |
| WO1996035083A1 (en) * | 1995-05-01 | 1996-11-07 | Mo Zhong Liang | Heat exchange unit and methods |
| WO1998010232A1 (en) * | 1996-09-02 | 1998-03-12 | Teubner, Uwe | Heat exchanger |
| WO1999024772A1 (en) * | 1997-11-12 | 1999-05-20 | Marconi Communications, Inc. | Heat exchanger |
| ES2147480A1 (en) * | 1995-02-20 | 2000-09-01 | Allen William Trusts Pty Ltd | Contra flow heat exchanger |
| EP1189010A2 (en) | 2000-09-19 | 2002-03-20 | Marconi Communications, Inc. | Process for making a plastic counterflow heat exchanger |
| EP1191300A2 (en) | 2000-09-19 | 2002-03-27 | Marconi Communications, Inc. | Plastic counterflow heat exchanger |
| EP1296107A3 (en) * | 2001-09-21 | 2004-07-21 | Theodor Blum | Counterflow heat exchanger |
| EP1783450A1 (en) * | 2004-07-16 | 2007-05-09 | Matsushita Electric Industrial Co., Ltd. | Heat exchanger |
| US7591301B2 (en) | 2005-09-13 | 2009-09-22 | Catacel Corp. | Low-cost high-temperature heat exchanger |
| US7594326B2 (en) | 2005-09-13 | 2009-09-29 | Catacel Corp. | Method for making a low-cost high-temperature heat exchanger |
| CN102183077A (en) * | 2011-01-30 | 2011-09-14 | 霍尼韦尔（中国）有限公司 | Energy recovery device |
| US8047272B2 (en) | 2005-09-13 | 2011-11-01 | Catacel Corp. | High-temperature heat exchanger |
| WO2013093374A1 (en) * | 2011-12-21 | 2013-06-27 | Elyt 3 | Heat exchanger |
| WO2015041518A3 (en) * | 2013-09-17 | 2015-08-13 | Level Holding B.V. | Heat exchanger with improved configuration |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB865106A (en) * | 1958-05-24 | 1961-04-12 | Gutehoffnungshuette Sterkrade | Improvements relating to heat exchangers |
| GB975221A (en) * | 1962-10-09 | 1964-11-11 | Gen Motors Corp | Stacked plate heat exchangers |
| GB1205933A (en) * | 1967-01-25 | 1970-09-23 | Clarke Chapman Ltd | Improvements in or relating to plate heat exchangers |
| GB1565912A (en) * | 1974-04-01 | 1980-04-23 | Zinc Co J | Corrugated sheet heat exchanger |
| GB1568140A (en) * | 1977-12-31 | 1980-05-29 | United Stirling Ab & Co | Plate heat-exchanger |
-
1984
- 1984-05-01 GB GB08411156A patent/GB2158569A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB865106A (en) * | 1958-05-24 | 1961-04-12 | Gutehoffnungshuette Sterkrade | Improvements relating to heat exchangers |
| GB975221A (en) * | 1962-10-09 | 1964-11-11 | Gen Motors Corp | Stacked plate heat exchangers |
| GB1205933A (en) * | 1967-01-25 | 1970-09-23 | Clarke Chapman Ltd | Improvements in or relating to plate heat exchangers |
| GB1565912A (en) * | 1974-04-01 | 1980-04-23 | Zinc Co J | Corrugated sheet heat exchanger |
| GB1568140A (en) * | 1977-12-31 | 1980-05-29 | United Stirling Ab & Co | Plate heat-exchanger |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4327857A1 (en) * | 1992-08-28 | 1994-03-03 | Rekuper Miroslav Moravec Liber | Gas-to-gas heat-exchanger |
| ES2147480A1 (en) * | 1995-02-20 | 2000-09-01 | Allen William Trusts Pty Ltd | Contra flow heat exchanger |
| WO1996035083A1 (en) * | 1995-05-01 | 1996-11-07 | Mo Zhong Liang | Heat exchange unit and methods |
| WO1998010232A1 (en) * | 1996-09-02 | 1998-03-12 | Teubner, Uwe | Heat exchanger |
| WO1999024772A1 (en) * | 1997-11-12 | 1999-05-20 | Marconi Communications, Inc. | Heat exchanger |
| US6660198B1 (en) | 2000-09-19 | 2003-12-09 | Marconi Communications, Inc. | Process for making a plastic counterflow heat exchanger |
| EP1191300A2 (en) | 2000-09-19 | 2002-03-27 | Marconi Communications, Inc. | Plastic counterflow heat exchanger |
| US6364007B1 (en) | 2000-09-19 | 2002-04-02 | Marconi Communications, Inc. | Plastic counterflow heat exchanger |
| EP1189010A2 (en) | 2000-09-19 | 2002-03-20 | Marconi Communications, Inc. | Process for making a plastic counterflow heat exchanger |
| EP1296107A3 (en) * | 2001-09-21 | 2004-07-21 | Theodor Blum | Counterflow heat exchanger |
| EP1783450A1 (en) * | 2004-07-16 | 2007-05-09 | Matsushita Electric Industrial Co., Ltd. | Heat exchanger |
| EP1783450A4 (en) * | 2004-07-16 | 2011-09-21 | Panasonic Corp | Heat exchanger |
| US7594326B2 (en) | 2005-09-13 | 2009-09-29 | Catacel Corp. | Method for making a low-cost high-temperature heat exchanger |
| US7591301B2 (en) | 2005-09-13 | 2009-09-22 | Catacel Corp. | Low-cost high-temperature heat exchanger |
| US8047272B2 (en) | 2005-09-13 | 2011-11-01 | Catacel Corp. | High-temperature heat exchanger |
| CN102183077A (en) * | 2011-01-30 | 2011-09-14 | 霍尼韦尔（中国）有限公司 | Energy recovery device |
| WO2013093374A1 (en) * | 2011-12-21 | 2013-06-27 | Elyt 3 | Heat exchanger |
| FR2985010A1 (en) * | 2011-12-21 | 2013-06-28 | Elyt 3 | PLATE FOR THERMAL EXCHANGER |
| WO2015041518A3 (en) * | 2013-09-17 | 2015-08-13 | Level Holding B.V. | Heat exchanger with improved configuration |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8411156D0 (en) | 1984-06-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |