JPS54159759A - Heat exchanger - Google Patents

Heat exchanger

Info

Publication number
JPS54159759A
JPS54159759A JP6869078A JP6869078A JPS54159759A JP S54159759 A JPS54159759 A JP S54159759A JP 6869078 A JP6869078 A JP 6869078A JP 6869078 A JP6869078 A JP 6869078A JP S54159759 A JPS54159759 A JP S54159759A
Authority
JP
Japan
Prior art keywords
water
water drops
contact angle
frost
repellent film
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.)
Pending
Application number
JP6869078A
Other languages
Japanese (ja)
Inventor
Hiroshi Yuyama
Kenji Sekine
Fumiaki Komatsu
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP6869078A priority Critical patent/JPS54159759A/en
Publication of JPS54159759A publication Critical patent/JPS54159759A/en
Pending 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
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/18—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by applying coatings, e.g. radiation-absorbing, radiation-reflecting; by surface treatment, e.g. polishing
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2245/00—Coatings; Surface treatments
    • F28F2245/04—Coatings; Surface treatments hydrophobic

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)

Abstract

PURPOSE: To reduce the wind resistance and the adhesion of water drops or frost by designing the plate fin so that the contact angle of water drops be approximately more than 110° and forming the water repellent film on the surface.
CONSTITUTION: The water repellent film is formed on the surface of the aluminum fin by applying silicone resin or ethylene tetrafluoride to make the contact angle of water drops more than 110°. Although the water pressure loss decreases where the contact angle is less ttan 70° or over 95°, the contact area and the interfacial tension become large in case of the hydrophile film, and the energy to separate water drops from the fin becomes large. On the other hand, water is well drained off by forming such water repellent film and making the contact angle over 110°, and water drops and frost become hard to adhere. Therefore, the wind resistance becomes smaller, and water drops and frost do not easily adhere.
COPYRIGHT: (C)1979,JPO&Japio
JP6869078A 1978-06-07 1978-06-07 Heat exchanger Pending JPS54159759A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6869078A JPS54159759A (en) 1978-06-07 1978-06-07 Heat exchanger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6869078A JPS54159759A (en) 1978-06-07 1978-06-07 Heat exchanger

Publications (1)

Publication Number Publication Date
JPS54159759A true JPS54159759A (en) 1979-12-17

Family

ID=13380993

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6869078A Pending JPS54159759A (en) 1978-06-07 1978-06-07 Heat exchanger

Country Status (1)

Country Link
JP (1) JPS54159759A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5826995A (en) * 1981-08-08 1983-02-17 Matsushita Electric Ind Co Ltd Heat exchanger
JPS58159467U (en) * 1982-04-19 1983-10-24 ダイキン工業株式会社 Heat exchanger
US5137067A (en) * 1991-12-16 1992-08-11 Jw Aluminum Company Hydrophilic and corrosion resistant fins for a heat exchanger
US5181558A (en) * 1990-11-13 1993-01-26 Matsushita Refrigeration Company Heat exchanger
EP0656273A1 (en) * 1993-12-01 1995-06-07 Nippondenso Co., Ltd. Air conditioning apparatus for vehicle use

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5826995A (en) * 1981-08-08 1983-02-17 Matsushita Electric Ind Co Ltd Heat exchanger
JPS58159467U (en) * 1982-04-19 1983-10-24 ダイキン工業株式会社 Heat exchanger
JPH0230695Y2 (en) * 1982-04-19 1990-08-17
US5181558A (en) * 1990-11-13 1993-01-26 Matsushita Refrigeration Company Heat exchanger
US5137067A (en) * 1991-12-16 1992-08-11 Jw Aluminum Company Hydrophilic and corrosion resistant fins for a heat exchanger
EP0656273A1 (en) * 1993-12-01 1995-06-07 Nippondenso Co., Ltd. Air conditioning apparatus for vehicle use
US5546754A (en) * 1993-12-01 1996-08-20 Nippondenso Co., Ltd. Air-conditioning apparatus for vehicle use

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