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 exchangers

Info

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
Application number
GB2171363A
Inventor
Alan Robert Pels
Francis Robert Carroll
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Millennium Petrochemicals Inc
Original Assignee
National Destillers and Chemical Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by National Destillers and Chemical Corp filed Critical National Destillers and Chemical Corp
Priority to GB2171363A priority Critical patent/GB985850A/en
Publication of GB985850A publication Critical patent/GB985850A/en
Expired legal-status Critical Current

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.
GB2171363A 1963-05-30 1963-05-30 Improvements in or relating to duplex tubes for use in heat exchangers Expired GB985850A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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