JPS5784993A - Boiling heat transfer material - Google Patents

Boiling heat transfer material

Info

Publication number
JPS5784993A
JPS5784993A JP15951080A JP15951080A JPS5784993A JP S5784993 A JPS5784993 A JP S5784993A JP 15951080 A JP15951080 A JP 15951080A JP 15951080 A JP15951080 A JP 15951080A JP S5784993 A JPS5784993 A JP S5784993A
Authority
JP
Japan
Prior art keywords
communicating holes
heat transfer
convexities
concavities
diameters
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
JP15951080A
Other languages
Japanese (ja)
Other versions
JPS5950039B2 (en
Inventor
Toru Morimoto
Toshihisa Ogaki
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.)
NIPPON DIA CLEVITE KK
NDC Co Ltd
Nippon Dia Clevite Co Ltd
Original Assignee
NIPPON DIA CLEVITE KK
NDC Co Ltd
Nippon Dia Clevite Co Ltd
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 NIPPON DIA CLEVITE KK, NDC Co Ltd, Nippon Dia Clevite Co Ltd filed Critical NIPPON DIA CLEVITE KK
Priority to JP15951080A priority Critical patent/JPS5950039B2/en
Publication of JPS5784993A publication Critical patent/JPS5784993A/en
Publication of JPS5950039B2 publication Critical patent/JPS5950039B2/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
    • 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
    • F28F13/185—Heat-exchange surfaces provided with microstructures or with porous coatings
    • F28F13/187—Heat-exchange surfaces provided with microstructures or with porous coatings especially adapted for evaporator surfaces or condenser surfaces, e.g. with nucleation sites

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)

Abstract

PURPOSE: To improve the heat conducting performance in boiling heat transfer by a method wherein a porous layer equipped with communicating holes are formed in an uneven manner, in which the diameters of the communicating holes in concavities and convexities are different, over a heating surface about the captioned heat transfer material used in boiler or the like.
CONSTITUTION: The porous layer 2 having the communicating holes between respective sintered aluminum alloy powder particles is formed over the surface of the heat transfer material 1. After that, the surface of the porous layer 2 is formed by rolling in the uneven manner, in which the diameters of the communicating holes in the convexities 3a are larger than that in the concavities 3b. Bubbles due to the evaporation of liquid are produced actively at the convexities 3a of the communicating holes with larger diameters and the evaporation is suppressed at the concavities 3b of the communicating holes with smaller diameters. The concavities are mainly served as influx passages of liquid to the convexities. The manner as described above results in activating the bubble generation cycle.
COPYRIGHT: (C)1982,JPO&Japio
JP15951080A 1980-11-14 1980-11-14 Boiling heat transfer material Expired JPS5950039B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15951080A JPS5950039B2 (en) 1980-11-14 1980-11-14 Boiling heat transfer material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15951080A JPS5950039B2 (en) 1980-11-14 1980-11-14 Boiling heat transfer material

Publications (2)

Publication Number Publication Date
JPS5784993A true JPS5784993A (en) 1982-05-27
JPS5950039B2 JPS5950039B2 (en) 1984-12-06

Family

ID=15695344

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15951080A Expired JPS5950039B2 (en) 1980-11-14 1980-11-14 Boiling heat transfer material

Country Status (1)

Country Link
JP (1) JPS5950039B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009106143A1 (en) * 2008-02-29 2009-09-03 Perkins Engines Company Limited Clustered nucleate boiling cavity grid
JP2015045432A (en) * 2013-08-27 2015-03-12 株式会社東芝 Heat transfer element and heat transfer element manufacturing method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009106143A1 (en) * 2008-02-29 2009-09-03 Perkins Engines Company Limited Clustered nucleate boiling cavity grid
JP2015045432A (en) * 2013-08-27 2015-03-12 株式会社東芝 Heat transfer element and heat transfer element manufacturing method

Also Published As

Publication number Publication date
JPS5950039B2 (en) 1984-12-06

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