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CA2330084A1 - Heat exchanger with transpired, highly porous fins - Google Patents

Heat exchanger with transpired, highly porous fins Download PDF

Info

Publication number
CA2330084A1
CA2330084A1 CA 2330084 CA2330084A CA2330084A1 CA 2330084 A1 CA2330084 A1 CA 2330084A1 CA 2330084 CA2330084 CA 2330084 CA 2330084 A CA2330084 A CA 2330084A CA 2330084 A1 CA2330084 A1 CA 2330084A1
Authority
CA
Canada
Prior art keywords
heat transfer
gas
fins
fin
tube assembly
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
CA 2330084
Other languages
French (fr)
Other versions
CA2330084C (en
Inventor
Charles F. Kutscher
Keith Gawlik
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.)
Alliance for Sustainable Energy LLC
Original Assignee
Midwest Research Institute
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 Midwest Research Institute filed Critical Midwest Research Institute
Priority to CA 2330084 priority Critical patent/CA2330084C/en
Publication of CA2330084A1 publication Critical patent/CA2330084A1/en
Application granted granted Critical
Publication of CA2330084C publication Critical patent/CA2330084C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/126—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element consisting of zig-zag shaped fins
    • F28F1/128—Fins with openings, e.g. louvered fins
    • 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
    • F28B1/06—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser using air or other gas as the cooling medium
    • 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
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
    • F28F1/32—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
    • F28F1/325—Fins with openings
    • 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
    • F28F13/003—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by using permeable mass, perforated or porous materials

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Geometry (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

The heat exchanger includes a fin and tube assembly with increased heat transfer surface area positioned within a hollow chamber of a housing to provide effective heat transfer between a gas flowing within the hollow chamber and a fluid flowing in the fin and tube assembly. A fan is included to force a gas, such as air, to flow through the hollow chamber and through the fin and tube assembly. The fin and tube assembly comprises fluid conduits to direct the fluid through the heat exchanger, to prevent mixing with the gas, and to provide a heat transfer surface or pathway between the fluid and the gas. A heat transfer element is provided in the fin and tube assembly to provide extended heat transfer surfaces for the fluid conduits. The heat transfer element is corrugated to form fins between alternating ridges and grooves that define flow channels for directing the gas flow. The fins are fabricated from a thin, heat conductive material containing numerous orifices or pores for transpiring the gas out of the flow channel. The grooves are closed or only partially open so that all or substantially all of the gas is transpired through the fins so that heat is exchanged on the front and back surfaces of the fins and also within the interior of the orifices, thereby significantly increasing the available the heat transfer surface of the heat exchanger. The transpired fins also increase heat transfer effectiveness of the heat exchanger by increasing the heat transfer coefficient by disrupting boundary layer development on the fins and by establishing other beneficial gas flow patterns, all at desirable pressure drops.
CA 2330084 2001-01-03 2001-01-03 Heat exchanger with transpired, highly porous fins Expired - Fee Related CA2330084C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA 2330084 CA2330084C (en) 2001-01-03 2001-01-03 Heat exchanger with transpired, highly porous fins

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA 2330084 CA2330084C (en) 2001-01-03 2001-01-03 Heat exchanger with transpired, highly porous fins

Publications (2)

Publication Number Publication Date
CA2330084A1 true CA2330084A1 (en) 2002-07-03
CA2330084C CA2330084C (en) 2008-08-26

Family

ID=4168024

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2330084 Expired - Fee Related CA2330084C (en) 2001-01-03 2001-01-03 Heat exchanger with transpired, highly porous fins

Country Status (1)

Country Link
CA (1) CA2330084C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1557627A1 (en) * 2003-12-01 2005-07-27 SPX Cooling Technologies GmbH Flow duct
CN106195974A (en) * 2016-07-20 2016-12-07 大同新成新材料股份有限公司 Heat accumulation boiler and manufacture building method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1557627A1 (en) * 2003-12-01 2005-07-27 SPX Cooling Technologies GmbH Flow duct
CN106195974A (en) * 2016-07-20 2016-12-07 大同新成新材料股份有限公司 Heat accumulation boiler and manufacture building method

Also Published As

Publication number Publication date
CA2330084C (en) 2008-08-26

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20150105