EP3193122A1 - Échangeurs thermiques - Google Patents
Échangeurs thermiques Download PDFInfo
- Publication number
- EP3193122A1 EP3193122A1 EP16207357.1A EP16207357A EP3193122A1 EP 3193122 A1 EP3193122 A1 EP 3193122A1 EP 16207357 A EP16207357 A EP 16207357A EP 3193122 A1 EP3193122 A1 EP 3193122A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- elliptical
- flow
- flow channels
- channels
- heat exchanger
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 claims description 11
- 238000012546 transfer Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Images
Classifications
-
- 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
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/0066—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F7/00—Elements not covered by group F28F1/00, F28F3/00 or F28F5/00
- F28F7/02—Blocks traversed by passages for heat-exchange media
Definitions
- the present disclosure relates to heat exchangers, more specifically to more thermally efficient heat exchangers.
- Heat exchangers are can be critical to the functionality of numerous systems (e.g., aircraft systems, engines, environmental control systems).
- Traditional heat exchangers include a plate fin construction, with tube shell and plate-type heat exchangers having niche applications.
- Traditional plate fin designs impose multiple design constraints that inhibit performance, increase size and weight, suffer structural reliability issues, are unable to meet certain high temperature applications, and limit system integration opportunities.
- a heat exchanger includes a body and a plurality of elliptical flow channels defined in the body, the elliptical flow channels defining an elliptical cross-sectional flow area, and a plurality of non-elliptical flow channels defined in the body and interspersed between the elliptical flow channels, the non-elliptical flow channels having a non-elliptical cross-sectional flow area.
- At least one of the plurality of elliptical flow channels can include a circular cross-sectional flow area. At least one of the plurality of non-elliptical flow channels can include a cross-shaped or rounded-cross shaped cross-sectional flow area.
- At least one of the plurality of non-elliptical flow channels can include a rectilinear shaped cross-sectional flow area.
- the rectilinear shaped cross-sectional area can include a hexagonal shape.
- the elliptical flow channels and the non-elliptical flow channels can be uniformly defined in the body such that the elliptical flow channels and non-elliptical flow channels form an evenly spaced pattern. Any other suitable pattern is contemplated herein.
- the elliptical flow channels can be configured to allow a hot flow to travel through the body in a first direction.
- the non-elliptical flow channels can be configured to allow a cold flow to travel through the body in a second direction.
- the first and second directions are opposite.
- a method of exchanging heat from a hot flow to a cold flow includes flowing the hot flow through a plurality of elliptical flow channels defined in a body of a heat exchanger, the elliptical flow channels defining an elliptical cross-sectional flow area, and flowing the cold flow through a plurality of non-elliptical flow channels defined in the body and interspersed between the elliptical flow channels, the non-elliptical flow channels having a non-elliptical cross-sectional flow area.
- flowing the hot flow through the elliptical channels can include flowing the hot flow in a first direction, wherein flowing the cold flow through the non-elliptical channels can include flowing the cold flow in a second direction, and the first direction and second direction can be opposite.
- FIG. 1 an illustrative view of an embodiment of a heat exchanger in accordance with the disclosure is shown in Fig. 1 and is designated generally by reference character 100.
- FIG. 2 Other embodiments and/or aspects of this disclosure are shown in Fig. 2 .
- the systems and methods described herein can be used to reduce weight and/or increase performance of heat transfer systems.
- a heat exchanger 100 includes a body 101 and a plurality of elliptical flow channels 103 defined in the body 101.
- the elliptical flow channels 103 define an elliptical cross-sectional flow area.
- the heat exchanger 100 includes a plurality of non-elliptical flow channels 105 defined in the body 101. As shown, the non-elliptical flow channels 105 are interspersed between the elliptical flow channels 103 and define a non-elliptical cross-sectional flow area.
- At least one of the plurality of elliptical flow channels 103 can include a circular cross-sectional flow area. As shown, each elliptical flow channel 103 can be circular throughout the heat exchanger 100, however, it is contemplated that the cross-sectional shape and/or size can vary from channel to channel, as a function of width, and/or along one or more flow directions. For example, the diameter /shape of elliptical flow channel 103 and/or the size/shape of the non-elliptical flow channel 105 can become smaller along a flow direction. Any other suitable variance of the elliptical flow channels 103 is contemplated herein.
- At least one of the plurality of non-elliptical flow channels 105 can include a cross-shaped or rounded-cross shaped cross-sectional flow area.
- Such shapes can reduce the amount of material that forms the body 101 and improve thermal transfer efficiency by increasing primary heat transfer surface area (e.g., the surfaces where heat transfers through the thickness of the material of the body 101) and decreasing secondary heat transfer surface area (surfaces where heat must travel along a length of material of the body 101).
- the free form rounded-cross shape can be utilized to maintain a constant wall thickness throughout the heat exchanger 100.
- At least one of the plurality of non-elliptical flow channels 205 of heat exchanger 200 can be defined by the body 201 to include a rectilinear shaped cross-sectional flow area.
- the rectilinear shaped cross-sectional flow area can include a hexagonal shape.
- the elliptical flow channels 103 and the non-elliptical flow channels 105 can be uniformly defined in the body 101 such that the elliptical flow channels 103 and non-elliptical flow channels 105 form an evenly spaced pattern (e.g., as in a checkerboard). Any other suitable pattern is contemplated herein.
- the elliptical flow channels 105 can be configured to allow a hot flow to travel through the body 101 in a first direction.
- the elliptical flow channels 103 can converge at one or more ends of the heat exchanger 100 to form a header to receive a hot flow (e.g., a hot coolant).
- the non-elliptical flow channels 105 can be configured to allow a cold flow to travel through the body 101 in a second direction.
- the first and second directions can be opposite each other to provide a counter flow, however, the same flow direction for hot and cold flow is contemplated herein.
- the heat exchanger can be monolithically formed using additive manufacturing. It is contemplated that embodiments of the heat exchanger 100 can be manufactured in any other suitable manner (e.g., casting, milling).
- the heat exchanger 100 can include the structure as shown as at least part of a core of the heat exchanger 100, with any suitable header attached thereto or formed thereon.
- a method of exchanging heat from a hot flow to a cold flow can include flowing the hot flow through a plurality of elliptical flow channels 103 as described above. The method also includes flowing the cold flow through a plurality of non-elliptical flow channels as described above. In certain embodiments, flowing the hot flow through the elliptical channels can include flowing the hot flow in a first direction, and flowing the cold flow through the non-elliptical channels can include flowing the cold flow in a second direction. As described above, the first direction and second direction can be opposite.
- Embodiments described above allow maximization of primary surface area for heat exchange while allowing flexibility to increase or decrease the ratio of hot side to cold side flow area.
- Changing the relative amount of flow area on each side of the heat exchanger can allow full utilization of a pressure drop available on each side.
- the procedure by which the relative amount of flow area on each side is changed can involve changing the channel dimensions along the flow direction of the channels.
- the shape of the channels can be critical to achieving a low stress structure with a low mass (e.g., small wall thickness).
- Ellipses e.g., circles
- elliptical channels e.g., circles
- combining elliptical (e.g., circular) channels 103 for the high pressure (e.g., hot side) flow with non-elliptical (e.g., polygonal/rectilinear/freeform) channels 105 for the lower pressure flow (e.g., in a checkerboard like pattern) can result in more efficient space utilization and reduction of material.
- Embodiments utilizing counter flow can provide improved performance by enabling improved balancing of the hot and cold side heat transfer and pressure drop, as well as increasing the heat exchanger effectiveness for a given overall heat transfer area.
- Counter flow can reduce the temperature differential across the heat exchanger planform since the cold side outlet is aligned with the hot side inlet, and vice versa.
- Embodiments of this disclosure also have significant structural benefits that enable higher temperature and higher pressure operation over traditional devices.
- embodiments as described above can allow heat transfer area and structural support to inlet and outlet headers.
- the above described features can be used to address transient thermal stress issues since the temperature response of the header and the core can be matched more closely than in a traditional open header.
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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/994,504 US20170198976A1 (en) | 2016-01-13 | 2016-01-13 | Heat exchangers |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3193122A1 true EP3193122A1 (fr) | 2017-07-19 |
EP3193122B1 EP3193122B1 (fr) | 2018-10-03 |
Family
ID=57708457
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16207357.1A Active EP3193122B1 (fr) | 2016-01-13 | 2016-12-29 | Échangeurs thermiques |
Country Status (2)
Country | Link |
---|---|
US (1) | US20170198976A1 (fr) |
EP (1) | EP3193122B1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3587982B1 (fr) * | 2018-06-26 | 2023-08-09 | Hamilton Sundstrand Corporation | Échangeur de chaleur à éléments intégrés |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20180038654A1 (en) * | 2016-08-08 | 2018-02-08 | General Electric Company | System for fault tolerant passage arrangements for heat exchanger applications |
US11747094B2 (en) * | 2017-05-12 | 2023-09-05 | The Boeing Company | Hollow lattice thermal energy storage heat exchanger |
US11333438B2 (en) | 2018-06-26 | 2022-05-17 | Hamilton Sundstrand Corporation | Heat exchanger with water extraction |
US10995997B2 (en) | 2018-06-26 | 2021-05-04 | Hamilton Sunstrand Corporation | Heat exchanger with integral features |
US11022373B2 (en) * | 2019-01-08 | 2021-06-01 | Meggitt Aerospace Limited | Heat exchangers and methods of making the same |
BE1027057B1 (fr) * | 2019-02-18 | 2020-09-14 | Safran Aero Boosters Sa | Échangeur de chaleur air-huile |
EP3760962B1 (fr) | 2019-07-05 | 2023-08-30 | UTC Aerospace Systems Wroclaw Sp. z o.o. | Échangeur de chaleur |
US11802736B2 (en) * | 2020-07-29 | 2023-10-31 | Hamilton Sundstrand Corporation | Annular heat exchanger |
US11662150B2 (en) * | 2020-08-13 | 2023-05-30 | General Electric Company | Heat exchanger having curved fluid passages for a gas turbine engine |
EP4222437A1 (fr) * | 2020-09-30 | 2023-08-09 | Zehnder Group International AG | Échangeur de chaleur à canaux |
US12006870B2 (en) | 2020-12-10 | 2024-06-11 | General Electric Company | Heat exchanger for an aircraft |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29604521U1 (de) * | 1996-03-11 | 1996-06-20 | Sgl Technik Gmbh | Aus Platten aufgebauter Wärmeaustauscherkörper |
EP1533585A2 (fr) * | 2003-11-20 | 2005-05-25 | Commissariat A L'energie Atomique | Plaque d'échangeur de chaleur, et cet échangeur |
WO2013172181A1 (fr) * | 2012-05-17 | 2013-11-21 | 三菱電機株式会社 | Échangeur de chaleur, et dispositif de cycle frigorifique |
EP2706318A1 (fr) * | 2011-05-06 | 2014-03-12 | Mitsubishi Electric Corporation | Échangeur de chaleur et dispositif à cycle de réfrigération équipé de cet échangeur |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2706318A (en) * | 1953-10-05 | 1955-04-19 | Coffing Hoist Company Inc | Safety hook |
BE561506A (fr) * | 1956-11-23 | |||
NO321805B1 (no) * | 2001-10-19 | 2006-07-03 | Norsk Hydro As | Fremgangsmate og anordning for a lede to gasser inn og ut av kanalene i en flerkanals monolittenhet. |
US20110139404A1 (en) * | 2009-12-16 | 2011-06-16 | General Electric Company | Heat exchanger and method for making the same |
JP2016512320A (ja) * | 2013-03-15 | 2016-04-25 | タール・エネルギー・エル・エル・シー | 対向流式熱交換器/反応器 |
-
2016
- 2016-01-13 US US14/994,504 patent/US20170198976A1/en not_active Abandoned
- 2016-12-29 EP EP16207357.1A patent/EP3193122B1/fr active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29604521U1 (de) * | 1996-03-11 | 1996-06-20 | Sgl Technik Gmbh | Aus Platten aufgebauter Wärmeaustauscherkörper |
EP1533585A2 (fr) * | 2003-11-20 | 2005-05-25 | Commissariat A L'energie Atomique | Plaque d'échangeur de chaleur, et cet échangeur |
EP2706318A1 (fr) * | 2011-05-06 | 2014-03-12 | Mitsubishi Electric Corporation | Échangeur de chaleur et dispositif à cycle de réfrigération équipé de cet échangeur |
WO2013172181A1 (fr) * | 2012-05-17 | 2013-11-21 | 三菱電機株式会社 | Échangeur de chaleur, et dispositif de cycle frigorifique |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3587982B1 (fr) * | 2018-06-26 | 2023-08-09 | Hamilton Sundstrand Corporation | Échangeur de chaleur à éléments intégrés |
Also Published As
Publication number | Publication date |
---|---|
EP3193122B1 (fr) | 2018-10-03 |
US20170198976A1 (en) | 2017-07-13 |
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