GB985850A - Improvements in or relating to duplex tubes for use in heat exchangers - Google Patents
Improvements in or relating to duplex tubes for use in heat exchangersInfo
- Publication number
- GB985850A GB985850A GB2171363A GB2171363A GB985850A GB 985850 A GB985850 A GB 985850A GB 2171363 A GB2171363 A GB 2171363A GB 2171363 A GB2171363 A GB 2171363A GB 985850 A GB985850 A GB 985850A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- layer
- heat exchangers
- relating
- tubes
- 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
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
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/085—Heat exchange elements made from metals or metal alloys from copper or copper alloys
-
- 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
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/082—Heat exchange elements made from metals or metal alloys from steel or ferrous alloys
-
- 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
- F28F9/02—Header boxes; End plates
- F28F9/04—Arrangements for sealing elements into header boxes or end plates
- F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
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
985,850. Tubular heat exchangers. NATIONAL DISTILLERS AND CHEMICAL CORPORATION. May 30, 1963, No. 21713/63. Heading F4S. A duplex tube for a heat exchanger comprises two tubes 1, 2 fitted tightly one inside the other except at their ends where the opposed tube surfaces are separated by a gas permeable layer 8 which may consist of a layer of chromium, or of particles of hard material such as sand or other abrasive. The layer 8 prevents the formation of too tight a seal between the surfaces when the tube end is expanded into a tube plate 7 and hence permits discharge through the layer of a fluid such as hydrogen which may have permeated through one of the tube walls from one of the heat exchanging fluids. In one form described one tube is of ferrous metal and the other of cuprous metal.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2171363A GB985850A (en) | 1963-05-30 | 1963-05-30 | Improvements in or relating to duplex tubes for use in heat exchangers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2171363A GB985850A (en) | 1963-05-30 | 1963-05-30 | Improvements in or relating to duplex tubes for use in heat exchangers |
Publications (1)
Publication Number | Publication Date |
---|---|
GB985850A true GB985850A (en) | 1965-03-10 |
Family
ID=10167591
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2171363A Expired GB985850A (en) | 1963-05-30 | 1963-05-30 | Improvements in or relating to duplex tubes for use in heat exchangers |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB985850A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2316794A1 (en) * | 1975-07-02 | 1977-01-28 | Hartig Gunter | PULSE TRAIN GENERATOR |
US4723602A (en) * | 1979-06-29 | 1988-02-09 | B.V. Neratoom | Heat exchanger with multiwall tubes |
-
1963
- 1963-05-30 GB GB2171363A patent/GB985850A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2316794A1 (en) * | 1975-07-02 | 1977-01-28 | Hartig Gunter | PULSE TRAIN GENERATOR |
US4723602A (en) * | 1979-06-29 | 1988-02-09 | B.V. Neratoom | Heat exchanger with multiwall tubes |
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