US3438430A - Double wall heat exchanger utilizing flexible conductor plates between the walls - Google Patents
Double wall heat exchanger utilizing flexible conductor plates between the walls Download PDFInfo
- Publication number
- US3438430A US3438430A US575167A US3438430DA US3438430A US 3438430 A US3438430 A US 3438430A US 575167 A US575167 A US 575167A US 3438430D A US3438430D A US 3438430DA US 3438430 A US3438430 A US 3438430A
- Authority
- US
- United States
- Prior art keywords
- walls
- heat exchanger
- plates
- flexible conductor
- heat
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
- G21C3/02—Fuel elements
- G21C3/04—Constructional details
- G21C3/16—Details of the construction within the casing
- G21C3/20—Details of the construction within the casing with coating on fuel or on inside of casing; with non-active interlayer between casing and active material with multiple casings or multiple active layers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/06—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being molten; Use of molten metal, e.g. zinc, as heat transfer medium
- F22B1/063—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being molten; Use of molten metal, e.g. zinc, as heat transfer medium for metal cooled nuclear reactors
- F22B1/066—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being molten; Use of molten metal, e.g. zinc, as heat transfer medium for metal cooled nuclear reactors with double-wall tubes having a third fluid between these walls, e.g. helium for leak detection
-
- 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
- F28F1/003—Multiple wall conduits, e.g. for leak detection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/005—Other auxiliary members within casings, e.g. internal filling means or sealing means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/007—Auxiliary supports for elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L2101/00—Uses or applications of pigs or moles
- F16L2101/30—Inspecting, measuring or testing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Definitions
- This invention relates to a double-walled heat-exchanger.
- Such exchangers prevent the consequences of leaks or breaks in a wall.
- it is in practice in many cases essential, from the safety point of view, to place double walls between the media that have to exchange calories, without permitting the slightest contact or the slightest pollution of one medium by the other.
- This double sealing-tightness which is necessary among other things for the provision of leak-detecting systems in the space between the walls so as to detect the beginning of a break in good time, inevitably results in pronounced temperature drops when this inter-wall space is full of gas.
- the problem might be solved or reduced by filling this space with a liquid, for example a liquid metal that conducts heat well. But if this method is adopted, there is a risk of incompatibility or reaction between the liquid metal and other materials forming, for example,
- a gas-filled space might be provided between the walls, the hot and cold structures being made continuous at certain points or in certain portions. But owing to the heat gradients between the two zones in question, any rigid connection produces mechanical stresses, which may make the system impracticable.
- the invention employs another solution with a gas space. Instead of a rigid connection, it proposes a flexible connection permitting a certain amount of play and differential expansion between the two zones.
- a double-walled heat-exchanger In a double-walled heat-exchanger according to this invention, flexible plates made of a material that is a good conductor of heat are disposed in the space between the two walls and engage with these two walls, so as to produce by contact, good conduction of heat between the latter, the space between the two walls is filled with a gas, there is at least one detector for contamination of the gas by leakage through a wall of the container and means for circulating the gas so that it passes (preferably slowly) through the leak detectors.
- FIGURE 1 is a cross-section of part of a heat-exchanger according to the invention
- FIGURES 2, 3 and 4 are cross-sections of heat-exchangers according to the invention.
- FIGURES 5 and 6 are cross-sections of parts of heatexchangers according to the invention, wherein the flexible plates are made of bimetallic material.
- FIGURE 1 shows part of a heat-exchanger between a hot medium 1 and a colder medium 2, comprising two walls, the hot wall 3 and the cold wall 4, with a gas-filled inter-wall space 5 between them. So that any leakages in either of the walls 3 or 4 may be detected as soon as possible, the gas travels through a circuit (not shown), which causes it to pass through leak-detectors (also not shown). These leak-detectors may be inside or outside the space 5. The same applies to the means for setting the gas in motion.
- Heat transmission between the walls 3 and 4 is effected across the space 5 by means of resiliently fiexible plates, for example 6, made of a material that is a good conductor of heat and does not absorb neutrons to any great extent, if a neutron medium is present (for example irradiation capsules or fuel elements).
- resiliently fiexible plates for example 6, made of a material that is a good conductor of heat and does not absorb neutrons to any great extent, if a neutron medium is present (for example irradiation capsules or fuel elements).
- These plates are simply engaged against both walls 3 and 4, the force with which they engage these walls and consequently their heat-conducting properties depending essentially on their outline, thickness and elasticity. In view of their elasticity and the fact that they are not welded or attached to the walls, any differential deformations of these walls can be effected freely without causing mechanical stresses, as the plates can be deformed and slide on the walls. All that is necessary is to provide sufiicient space between two adjacent plates.
- the plates are shown in all the figures except the last one as having V-shaped cross-sections, but other forms and other cross-sections, for example triangular, circular, trapezoidal, X-shaped or M-shaped, are suitable.
- FIGURES 5 and 6 show heat-exchangers according to the invention in which the flexible conductive plates 6 are bimetallic, so that these plates tend to straighten as a result of an increase in temperature.
- the plates 6 When the temperature of the hot wall, for example, increases, the plates 6 begin to straighten and bear harder on the walls 3 and 4, thereby improving the heat conduction at the plate-wall contact surfaces. As a result, the heat-transfer properties of the exchanger are automatically controlled according to the temperature.
- bimetallic plates also, of course, many shapes or cross-sections are suitable, and can be so chosen that the plates react to a temperature increase by bearing harder on the walls.
- a heat exchanger comprising an outer wall, an inner wall disposed within said outer wall and spaced therefrom, means for circulating a gas through the space between said walls, means to detect leakage of gas through said walls, and at least one bimetallic flexible conductor plate disposed in said space and engaging said walls with a predetermined force, said plate being adapted to vary said force in response to temperature changes.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- High Energy & Nuclear Physics (AREA)
- Plasma & Fusion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE17548 | 1965-09-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3438430A true US3438430A (en) | 1969-04-15 |
Family
ID=3839885
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US575167A Expired - Lifetime US3438430A (en) | 1965-09-06 | 1966-08-25 | Double wall heat exchanger utilizing flexible conductor plates between the walls |
Country Status (5)
Country | Link |
---|---|
US (1) | US3438430A (es) |
BE (1) | BE669258A (es) |
DE (1) | DE1501512A1 (es) |
LU (1) | LU51840A1 (es) |
NL (1) | NL6611498A (es) |
Cited By (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3861162A (en) * | 1973-03-16 | 1975-01-21 | Refrigerated Sea Water Inc | Cooling system and heat transfer assembly |
US3918893A (en) * | 1974-11-13 | 1975-11-11 | Allis Chalmers | Elongated rotary drum shell construction |
US4011132A (en) * | 1974-01-29 | 1977-03-08 | Kraftwerk Union Aktiengesellschaft | Nuclear reactor pressure vessel for nuclear reactors with plastically deformable spacers |
US4155809A (en) * | 1977-02-08 | 1979-05-22 | Westinghouse Electric Corp. | Variable stiffness lattice support system for a condenser type nuclear reactor containment |
EP0013796A1 (en) * | 1979-01-19 | 1980-08-06 | Westinghouse Electric Corporation | Heat exchanger with leak detecting double wall tubes |
US4225054A (en) * | 1977-07-26 | 1980-09-30 | Gaz-Transport | Thermally insulated tank for land storage of low temperature liquids |
FR2484622A1 (fr) * | 1980-05-08 | 1981-12-18 | Wieland Werke Ag | Ensemble de tubes coaxiaux pour la transmission de chaleur entre des liquides ou des gaz |
US4339050A (en) * | 1980-11-03 | 1982-07-13 | The United States Of America As Represented By The Secretary Of The Navy | Louvre buffer fire prevention system |
US4385622A (en) * | 1980-01-11 | 1983-05-31 | Tidwell Joe D | Fireplace liner incorporating thermal expansion stress relief spacers |
US4465127A (en) * | 1980-04-29 | 1984-08-14 | Stein Industrie | Device for reducing the thermal stresses in the bottom of a vertical heat exchanger |
US4485069A (en) * | 1982-01-20 | 1984-11-27 | Westinghouse Electric Corp. | Moisture separator reheater with round tube bundle |
US4571801A (en) * | 1983-06-15 | 1986-02-25 | Mks Instruments, Inc. | Method of manufacturing a cartridge unit for establishing controlled laminar-flow conditions |
US4583584A (en) * | 1984-10-19 | 1986-04-22 | Westinghouse Electric Corp. | Seismic snubber accommodating variable gaps in pressure vessels |
US4619292A (en) * | 1983-10-14 | 1986-10-28 | Apx Group, Inc. | Air gap pipe |
FR2583912A1 (fr) * | 1985-06-19 | 1986-12-26 | Commissariat Energie Atomique | Installation de refroidissement du coeur d'un reacteur nucleaire lors de l'arret de celui-ci ou en fonctionnement normal |
US4656713A (en) * | 1985-10-24 | 1987-04-14 | Ap Industries, Inc. | Method for forming an air gap pipe |
US5131456A (en) * | 1991-07-01 | 1992-07-21 | Ibm Corporation | Bimetallic insert fin for high conduction cooling structure |
US5535815A (en) * | 1995-05-24 | 1996-07-16 | The United States Of America As Represented By The Secretary Of The Navy | Package-interface thermal switch |
US6131646A (en) * | 1998-01-19 | 2000-10-17 | Trw Inc. | Heat conductive interface material |
US6431258B1 (en) * | 1997-07-04 | 2002-08-13 | Tokyo Electron Limited | Process solution supplying apparatus |
US20030159815A1 (en) * | 2000-03-31 | 2003-08-28 | Wilson Alexandria Bruce | Heat exchanger |
US20040125906A1 (en) * | 2002-11-09 | 2004-07-01 | Gnb Gesellschaft Fur Nuklear-Behalter Mbh | Container for heat-generating radioactive elements |
US7325772B1 (en) | 2003-09-04 | 2008-02-05 | L-3 Communications Corporation | Aircraft heat sink and electronics enclosure |
WO2008125963A2 (en) * | 2007-04-16 | 2008-10-23 | Del Nova Vis S.R.L. | System for evacuating the residual heat from a liquid metal or molten salts cooled nuclear reactor |
US20090313972A1 (en) * | 2008-06-24 | 2009-12-24 | Gm Global Technology Operations, Inc. | Heat Exchanger with Disimilar Metal Properties |
US20100206888A1 (en) * | 2007-08-28 | 2010-08-19 | Arzneimittel GmbH Apotheker Vetter & Co. Ravensbur g | Temperature control device |
US20130264918A1 (en) * | 2012-04-04 | 2013-10-10 | Ysi Incorporated | Housing and method of making same |
US20150107806A1 (en) * | 2012-05-01 | 2015-04-23 | Benteler Automobiltechnik Gmbh | Double-walled heat exchanger tube |
US10309730B2 (en) | 2015-06-16 | 2019-06-04 | Hamilton Sundstrand Corporation | Mini-channel heat exchanger tube sleeve |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2551903A1 (de) * | 1975-11-19 | 1977-06-02 | Babcock Brown Boveri Reaktor | Einrichtung zur sicherung einer rohrleitung |
DE3533095A1 (de) * | 1985-09-17 | 1987-03-19 | Sueddeutsche Kuehler Behr | Kuehlmittelausgleichsbehaelter, insbesondere fuer kraftfahrzeugverbrennungsmotoren |
DE102017204954A1 (de) | 2017-03-23 | 2018-09-27 | MTU Aero Engines AG | Strömungsmaschine mit montageelement |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2658728A (en) * | 1948-06-25 | 1953-11-10 | Lummus Co | Method of detecting leakage between heat transfer fluids |
US2707493A (en) * | 1943-03-13 | 1955-05-03 | Claude A Bonvillian | Conduits |
GB835297A (en) * | 1957-04-09 | 1960-05-18 | Marston Excelsior Ltd | Tubular heat exchanger |
US2949283A (en) * | 1956-05-11 | 1960-08-16 | Millard F Smith | Apparatus for heat transfer |
US3016695A (en) * | 1960-05-31 | 1962-01-16 | Thiokol Chemical Corp | Reaction motor thrust chamber |
US3071527A (en) * | 1957-03-19 | 1963-01-01 | Young Gale | Nuclear reactor |
GB922632A (en) * | 1961-02-01 | 1963-04-03 | Marston Excelsior Ltd | Improvements in heat exchangers |
US3098023A (en) * | 1958-09-15 | 1963-07-16 | Babcock & Wilcox Co | Nuclear reactor containment system |
US3104218A (en) * | 1958-10-01 | 1963-09-17 | Gen Dynamics Corp | Pressure tube structure |
US3106526A (en) * | 1960-09-22 | 1963-10-08 | Benjamin F Schmidt | Sand and gas deflector for oil well pumps |
US3216902A (en) * | 1961-07-27 | 1965-11-09 | Commissariat Energie Atomique | Liquid moderator nuclear reactors |
-
1965
- 1965-09-06 BE BE669258A patent/BE669258A/xx unknown
-
1966
- 1966-08-16 NL NL6611498A patent/NL6611498A/xx unknown
- 1966-08-25 US US575167A patent/US3438430A/en not_active Expired - Lifetime
- 1966-08-29 LU LU51840A patent/LU51840A1/xx unknown
- 1966-09-05 DE DE19661501512 patent/DE1501512A1/de active Pending
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2707493A (en) * | 1943-03-13 | 1955-05-03 | Claude A Bonvillian | Conduits |
US2658728A (en) * | 1948-06-25 | 1953-11-10 | Lummus Co | Method of detecting leakage between heat transfer fluids |
US2949283A (en) * | 1956-05-11 | 1960-08-16 | Millard F Smith | Apparatus for heat transfer |
US3071527A (en) * | 1957-03-19 | 1963-01-01 | Young Gale | Nuclear reactor |
GB835297A (en) * | 1957-04-09 | 1960-05-18 | Marston Excelsior Ltd | Tubular heat exchanger |
US3098023A (en) * | 1958-09-15 | 1963-07-16 | Babcock & Wilcox Co | Nuclear reactor containment system |
US3104218A (en) * | 1958-10-01 | 1963-09-17 | Gen Dynamics Corp | Pressure tube structure |
US3016695A (en) * | 1960-05-31 | 1962-01-16 | Thiokol Chemical Corp | Reaction motor thrust chamber |
US3106526A (en) * | 1960-09-22 | 1963-10-08 | Benjamin F Schmidt | Sand and gas deflector for oil well pumps |
GB922632A (en) * | 1961-02-01 | 1963-04-03 | Marston Excelsior Ltd | Improvements in heat exchangers |
US3216902A (en) * | 1961-07-27 | 1965-11-09 | Commissariat Energie Atomique | Liquid moderator nuclear reactors |
Cited By (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3861162A (en) * | 1973-03-16 | 1975-01-21 | Refrigerated Sea Water Inc | Cooling system and heat transfer assembly |
US4011132A (en) * | 1974-01-29 | 1977-03-08 | Kraftwerk Union Aktiengesellschaft | Nuclear reactor pressure vessel for nuclear reactors with plastically deformable spacers |
US3918893A (en) * | 1974-11-13 | 1975-11-11 | Allis Chalmers | Elongated rotary drum shell construction |
US4155809A (en) * | 1977-02-08 | 1979-05-22 | Westinghouse Electric Corp. | Variable stiffness lattice support system for a condenser type nuclear reactor containment |
US4225054A (en) * | 1977-07-26 | 1980-09-30 | Gaz-Transport | Thermally insulated tank for land storage of low temperature liquids |
EP0013796A1 (en) * | 1979-01-19 | 1980-08-06 | Westinghouse Electric Corporation | Heat exchanger with leak detecting double wall tubes |
US4385622A (en) * | 1980-01-11 | 1983-05-31 | Tidwell Joe D | Fireplace liner incorporating thermal expansion stress relief spacers |
US4465127A (en) * | 1980-04-29 | 1984-08-14 | Stein Industrie | Device for reducing the thermal stresses in the bottom of a vertical heat exchanger |
FR2484622A1 (fr) * | 1980-05-08 | 1981-12-18 | Wieland Werke Ag | Ensemble de tubes coaxiaux pour la transmission de chaleur entre des liquides ou des gaz |
US4339050A (en) * | 1980-11-03 | 1982-07-13 | The United States Of America As Represented By The Secretary Of The Navy | Louvre buffer fire prevention system |
US4485069A (en) * | 1982-01-20 | 1984-11-27 | Westinghouse Electric Corp. | Moisture separator reheater with round tube bundle |
US4571801A (en) * | 1983-06-15 | 1986-02-25 | Mks Instruments, Inc. | Method of manufacturing a cartridge unit for establishing controlled laminar-flow conditions |
US4619292A (en) * | 1983-10-14 | 1986-10-28 | Apx Group, Inc. | Air gap pipe |
US4583584A (en) * | 1984-10-19 | 1986-04-22 | Westinghouse Electric Corp. | Seismic snubber accommodating variable gaps in pressure vessels |
FR2583912A1 (fr) * | 1985-06-19 | 1986-12-26 | Commissariat Energie Atomique | Installation de refroidissement du coeur d'un reacteur nucleaire lors de l'arret de celui-ci ou en fonctionnement normal |
EP0206922A1 (fr) * | 1985-06-19 | 1986-12-30 | Commissariat A L'energie Atomique | Installation de refroidissement du coeur d'un réacteur nucléaire |
US4656713A (en) * | 1985-10-24 | 1987-04-14 | Ap Industries, Inc. | Method for forming an air gap pipe |
US5131456A (en) * | 1991-07-01 | 1992-07-21 | Ibm Corporation | Bimetallic insert fin for high conduction cooling structure |
US5535815A (en) * | 1995-05-24 | 1996-07-16 | The United States Of America As Represented By The Secretary Of The Navy | Package-interface thermal switch |
US6431258B1 (en) * | 1997-07-04 | 2002-08-13 | Tokyo Electron Limited | Process solution supplying apparatus |
US6131646A (en) * | 1998-01-19 | 2000-10-17 | Trw Inc. | Heat conductive interface material |
US20030159815A1 (en) * | 2000-03-31 | 2003-08-28 | Wilson Alexandria Bruce | Heat exchanger |
US6840309B2 (en) * | 2000-03-31 | 2005-01-11 | Innogy Plc | Heat exchanger |
US20040125906A1 (en) * | 2002-11-09 | 2004-07-01 | Gnb Gesellschaft Fur Nuklear-Behalter Mbh | Container for heat-generating radioactive elements |
US7325772B1 (en) | 2003-09-04 | 2008-02-05 | L-3 Communications Corporation | Aircraft heat sink and electronics enclosure |
US20100226471A1 (en) * | 2007-04-16 | 2010-09-09 | Del Nova Vis S.R.L. | System for evacuating the residual heat from a liquid metal or molten salts cooled nuclear reactor |
WO2008125963A2 (en) * | 2007-04-16 | 2008-10-23 | Del Nova Vis S.R.L. | System for evacuating the residual heat from a liquid metal or molten salts cooled nuclear reactor |
WO2008125963A3 (en) * | 2007-04-16 | 2008-12-11 | Del Nova Vis S R L | System for evacuating the residual heat from a liquid metal or molten salts cooled nuclear reactor |
US20100206888A1 (en) * | 2007-08-28 | 2010-08-19 | Arzneimittel GmbH Apotheker Vetter & Co. Ravensbur g | Temperature control device |
US20090313972A1 (en) * | 2008-06-24 | 2009-12-24 | Gm Global Technology Operations, Inc. | Heat Exchanger with Disimilar Metal Properties |
US8205668B2 (en) * | 2008-06-24 | 2012-06-26 | GM Global Technology Operations LLC | Heat exchanger with disimilar metal properties |
US20130264918A1 (en) * | 2012-04-04 | 2013-10-10 | Ysi Incorporated | Housing and method of making same |
US9702736B2 (en) * | 2012-04-04 | 2017-07-11 | Ysi Incorporated | Housing and method of making same |
US20150107806A1 (en) * | 2012-05-01 | 2015-04-23 | Benteler Automobiltechnik Gmbh | Double-walled heat exchanger tube |
US9897387B2 (en) * | 2012-05-01 | 2018-02-20 | Benteler Automobiltechnik Gmbh | Heat exchanger with double-walled tubes |
US10309730B2 (en) | 2015-06-16 | 2019-06-04 | Hamilton Sundstrand Corporation | Mini-channel heat exchanger tube sleeve |
Also Published As
Publication number | Publication date |
---|---|
DE1501512A1 (de) | 1969-10-30 |
BE669258A (es) | 1966-03-07 |
LU51840A1 (es) | 1966-10-29 |
NL6611498A (es) | 1967-03-07 |
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