FR2243408A1 - Steam heated calorifier - having elements with change from circular to rectangular to improve heat transfer from condensate - Google Patents

Steam heated calorifier - having elements with change from circular to rectangular to improve heat transfer from condensate

Info

Publication number
FR2243408A1
FR2243408A1 FR7430343A FR7430343A FR2243408A1 FR 2243408 A1 FR2243408 A1 FR 2243408A1 FR 7430343 A FR7430343 A FR 7430343A FR 7430343 A FR7430343 A FR 7430343A FR 2243408 A1 FR2243408 A1 FR 2243408A1
Authority
FR
France
Prior art keywords
rectangular
circular
elements
calorifier
condensate
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
Application number
FR7430343A
Other languages
French (fr)
Other versions
FR2243408B1 (en
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.)
BERTRAMS AG
Original Assignee
BERTRAMS AG
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
Priority claimed from DE19732345243 external-priority patent/DE2345243C3/en
Application filed by BERTRAMS AG filed Critical BERTRAMS AG
Publication of FR2243408A1 publication Critical patent/FR2243408A1/en
Application granted granted Critical
Publication of FR2243408B1 publication Critical patent/FR2243408B1/fr
Granted legal-status Critical Current

Links

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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
    • F28D21/0005—Recuperative heat exchangers the heat being recuperated from exhaust gases for domestic or space-heating systems
    • F28D21/0007—Water heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28B—STEAM OR VAPOUR CONDENSERS
    • F28B1/00—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser
    • F28B1/02—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser using water or other liquid as the cooling medium
    • 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
    • F28D7/02—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 the conduits being helically coiled
    • F28D7/024—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 the conduits being helically coiled the conduits of only one medium being helically coiled tubes, the coils having a cylindrical configuration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F28F13/08—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by varying the cross-section of the flow channels

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Cookers (AREA)

Abstract

Calorifier for steam heating hot water for space heating purpose has elements enclosed in a vessel or container. The elements consist of a spiral of circular pipe which change into rectangular suction further down. This is so as to improve the ratio of surface area to cross section in the lower portion because here the steam has fully condensed and is condensate of lower volume and poorer hot-transfer coefficient. The diameter of the rectangular spiral is smaller than that of the circular spiral. The lower portion can also have elliptical cross section.
FR7430343A 1973-09-07 1974-09-06 Steam heated calorifier - having elements with change from circular to rectangular to improve heat transfer from condensate Granted FR2243408A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732345243 DE2345243C3 (en) 1973-09-07 Steam heated heat exchanger

Publications (2)

Publication Number Publication Date
FR2243408A1 true FR2243408A1 (en) 1975-04-04
FR2243408B1 FR2243408B1 (en) 1976-12-31

Family

ID=5891986

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7430343A Granted FR2243408A1 (en) 1973-09-07 1974-09-06 Steam heated calorifier - having elements with change from circular to rectangular to improve heat transfer from condensate

Country Status (2)

Country Link
CH (1) CH571202A5 (en)
FR (1) FR2243408A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0618413A1 (en) * 1993-03-30 1994-10-05 Daniel Lee Welch Method and apparatus for prechilling tap water in ice machines

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2006275171B2 (en) * 2005-07-29 2011-05-19 Linde Aktiengesellschaft Coiled heat exchanger having different tube diameters
US20170321973A1 (en) * 2016-05-09 2017-11-09 Hamilton Sundstrand Corporation Constant vapor velocity condenser

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0618413A1 (en) * 1993-03-30 1994-10-05 Daniel Lee Welch Method and apparatus for prechilling tap water in ice machines
US5379603A (en) * 1993-03-30 1995-01-10 Welch; Daniel L. Method and apparatus for prechilling tap water in ice machines

Also Published As

Publication number Publication date
DE2345243A1 (en) 1975-03-27
FR2243408B1 (en) 1976-12-31
CH571202A5 (en) 1975-12-31
DE2345243B2 (en) 1977-03-17

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Legal Events

Date Code Title Description
ST Notification of lapse