JPS57175897A - Heat transmission pipe - Google Patents

Heat transmission pipe

Info

Publication number
JPS57175897A
JPS57175897A JP6114381A JP6114381A JPS57175897A JP S57175897 A JPS57175897 A JP S57175897A JP 6114381 A JP6114381 A JP 6114381A JP 6114381 A JP6114381 A JP 6114381A JP S57175897 A JPS57175897 A JP S57175897A
Authority
JP
Japan
Prior art keywords
heat transmission
pipe
liquid
transmission pipe
inside wall
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
JP6114381A
Other languages
Japanese (ja)
Inventor
Hideyuki Kimura
Masakatsu Hayashi
Shigeyuki Yamazaki
Izumi Ochiai
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP6114381A priority Critical patent/JPS57175897A/en
Publication of JPS57175897A publication Critical patent/JPS57175897A/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
    • 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
    • F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element

Landscapes

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

Abstract

PURPOSE:To increase heat conductivity and to reduce pressure loss in heat transmission pipes used for air conditioners, etc. by a method wherein the entire surface of the inside wall of a heat transmission pipe through which fluid flows in both gaseous and liquid phases by changing phases as flows is finished to form a fine rough surface. CONSTITUTION:The entire surface of the inside wall of the heat transmission pipe 1 is finished to be fine rough surface texture 2 by known methods such as by sand blast, etc. so that liquid 4 rises upward on the inside wall of the pipe by capillarity. Therefore, contacting areas between liquid 4 and the pipe wall 1 are increased, thereby heat conductivity is increased and there is no remarkable increase in pressure loss as compared with pipes having smooth inside walls.
JP6114381A 1981-04-24 1981-04-24 Heat transmission pipe Pending JPS57175897A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6114381A JPS57175897A (en) 1981-04-24 1981-04-24 Heat transmission pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6114381A JPS57175897A (en) 1981-04-24 1981-04-24 Heat transmission pipe

Publications (1)

Publication Number Publication Date
JPS57175897A true JPS57175897A (en) 1982-10-28

Family

ID=13162574

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6114381A Pending JPS57175897A (en) 1981-04-24 1981-04-24 Heat transmission pipe

Country Status (1)

Country Link
JP (1) JPS57175897A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006307964A (en) * 2005-04-28 2006-11-09 Furukawa Electric Co Ltd:The Electric control valve
JP2016125762A (en) * 2014-12-27 2016-07-11 国立大学法人徳島大学 Heat exchanger

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006307964A (en) * 2005-04-28 2006-11-09 Furukawa Electric Co Ltd:The Electric control valve
JP2016125762A (en) * 2014-12-27 2016-07-11 国立大学法人徳島大学 Heat exchanger

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