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JPS5758092A - Condensing heat transfer pipe - Google Patents

Condensing heat transfer pipe

Info

Publication number
JPS5758092A
JPS5758092A JP13241480A JP13241480A JPS5758092A JP S5758092 A JPS5758092 A JP S5758092A JP 13241480 A JP13241480 A JP 13241480A JP 13241480 A JP13241480 A JP 13241480A JP S5758092 A JPS5758092 A JP S5758092A
Authority
JP
Japan
Prior art keywords
grooves
heat transfer
transfer pipe
condensing heat
rising sections
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
JP13241480A
Other languages
Japanese (ja)
Other versions
JPH0140278B2 (en
Inventor
Shigeki Hirasawa
Heikichi Kuwabara
Hisashi Nakayama
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.)
National Institute of Advanced Industrial Science and Technology AIST
Original Assignee
Agency of Industrial Science and Technology
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 Agency of Industrial Science and Technology filed Critical Agency of Industrial Science and Technology
Priority to JP13241480A priority Critical patent/JPS5758092A/en
Publication of JPS5758092A publication Critical patent/JPS5758092A/en
Publication of JPH0140278B2 publication Critical patent/JPH0140278B2/ja
Granted 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 improve the condensing heat transfer efficiency of the captioned heat transfer pipe by a method wherein two groups of spiral grooves turning in opposite directions and rising sections separated from one another by the grooves are provided in the inner surface of the heat transfer pipe. CONSTITUTION:The two groups of spiral grooves 2 and 3 turning in opposite directions and the rising sections 4 separated from one another by the grooves are provided on the inner surface of the transfer pipe. The grooves 3 are made smaller in depth than the grooves 2 and the bottoms and the side walls of the grooves are kept constant with respect to the rising sections. Consequently, when the vapor of a liquid condenses on the inner wall of the heat transfer pipe 1, a film of the liquid is formed on each of the surfaces of the rising sections 4 and the liquid flows into the grooves 2 and 3 in the directions of gravity as shown by the arrows A and B to form itself a condensed liquid 5 so that the condensing heat transfer efficiency of the pipe is improved.
JP13241480A 1980-09-25 1980-09-25 Condensing heat transfer pipe Granted JPS5758092A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13241480A JPS5758092A (en) 1980-09-25 1980-09-25 Condensing heat transfer pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13241480A JPS5758092A (en) 1980-09-25 1980-09-25 Condensing heat transfer pipe

Publications (2)

Publication Number Publication Date
JPS5758092A true JPS5758092A (en) 1982-04-07
JPH0140278B2 JPH0140278B2 (en) 1989-08-28

Family

ID=15080819

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13241480A Granted JPS5758092A (en) 1980-09-25 1980-09-25 Condensing heat transfer pipe

Country Status (1)

Country Link
JP (1) JPS5758092A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01317637A (en) * 1988-06-20 1989-12-22 Furukawa Electric Co Ltd:The Heat transfer tube with internal surface groove
US5259448A (en) * 1991-07-09 1993-11-09 Mitsubishi Shindoh Co., Ltd. Heat transfer tubes and method for manufacturing
US5682946A (en) * 1995-03-21 1997-11-04 Km Europa Metal Aktiengesellschaft Tube for use in a heat exchanger
US5975196A (en) * 1994-08-08 1999-11-02 Carrier Corporation Heat transfer tube
US5992513A (en) * 1997-09-17 1999-11-30 Hitachi Cable, Ltd. Inner surface grooved heat transfer tube
US7415848B2 (en) * 2001-02-01 2008-08-26 Lg Electronics Inc. Pulsator type washing machine with drying function
JP2009103435A (en) * 2007-10-01 2009-05-14 Furukawa Electric Co Ltd:The Heat transfer tube and manufacturing method of the same

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01317637A (en) * 1988-06-20 1989-12-22 Furukawa Electric Co Ltd:The Heat transfer tube with internal surface groove
US5259448A (en) * 1991-07-09 1993-11-09 Mitsubishi Shindoh Co., Ltd. Heat transfer tubes and method for manufacturing
US5975196A (en) * 1994-08-08 1999-11-02 Carrier Corporation Heat transfer tube
US5682946A (en) * 1995-03-21 1997-11-04 Km Europa Metal Aktiengesellschaft Tube for use in a heat exchanger
US5992513A (en) * 1997-09-17 1999-11-30 Hitachi Cable, Ltd. Inner surface grooved heat transfer tube
US7415848B2 (en) * 2001-02-01 2008-08-26 Lg Electronics Inc. Pulsator type washing machine with drying function
JP2009103435A (en) * 2007-10-01 2009-05-14 Furukawa Electric Co Ltd:The Heat transfer tube and manufacturing method of the same

Also Published As

Publication number Publication date
JPH0140278B2 (en) 1989-08-28

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