JPS57104095A - Heat transfer tube with groove on inner face - Google Patents

Heat transfer tube with groove on inner face

Info

Publication number
JPS57104095A
JPS57104095A JP16601480A JP16601480A JPS57104095A JP S57104095 A JPS57104095 A JP S57104095A JP 16601480 A JP16601480 A JP 16601480A JP 16601480 A JP16601480 A JP 16601480A JP S57104095 A JPS57104095 A JP S57104095A
Authority
JP
Japan
Prior art keywords
inner face
groove
section
depth
width
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
JP16601480A
Other languages
Japanese (ja)
Inventor
Toru Arimoto
Hiroyuki Yamada
Katsuumi Hosokawa
Seiji Tojo
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.)
Furukawa Electric Co Ltd
Original Assignee
Furukawa Electric 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 Furukawa Electric Co Ltd filed Critical Furukawa Electric Co Ltd
Priority to JP16601480A priority Critical patent/JPS57104095A/en
Publication of JPS57104095A publication Critical patent/JPS57104095A/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)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

PURPOSE:To improve heat transfer property by narrowing in the direction of depth by more than two steps each of concave grooves installed on the inner face of a tube with specified depth and pitch. CONSTITUTION:A step shaped section (a) is provided on the side walls of many linear or spiral concave grooves 2 that are provided with depth, 0.05-1.0mm. and pitch, 0.2-1.0mm. in the longitudinal direction on the inner face of a tube 1 in order to make the lateral width of the groove narrower by more than two steps. Namely on the side walls of the concave groove 2 with depth provided on the inner face of the tube 1 step shaped section a1, a2... an, an+1 are made, and the average groove width W1 for the first step section a1, average groove width W2 for the second step section a2,mm. average width Wn for the n-th section an, average width Wn+1 for the (n+1)th section an+1 are formed in such a way as to establish the relation: W1>W2...Wn> Wn+1.
JP16601480A 1980-11-26 1980-11-26 Heat transfer tube with groove on inner face Pending JPS57104095A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16601480A JPS57104095A (en) 1980-11-26 1980-11-26 Heat transfer tube with groove on inner face

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16601480A JPS57104095A (en) 1980-11-26 1980-11-26 Heat transfer tube with groove on inner face

Publications (1)

Publication Number Publication Date
JPS57104095A true JPS57104095A (en) 1982-06-28

Family

ID=15823298

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16601480A Pending JPS57104095A (en) 1980-11-26 1980-11-26 Heat transfer tube with groove on inner face

Country Status (1)

Country Link
JP (1) JPS57104095A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4938282A (en) * 1988-09-15 1990-07-03 Zohler Steven R High performance heat transfer tube for heat exchanger
FR2682747A1 (en) * 1991-10-17 1993-04-23 Electroniques Mecaniques Et Heat exchanger promoting thermal transfer by convection
US5259448A (en) * 1991-07-09 1993-11-09 Mitsubishi Shindoh Co., Ltd. Heat transfer tubes and method for manufacturing
EP0733871A1 (en) * 1995-03-21 1996-09-25 KM Europa Metal Aktiengesellschaft Heat transfer tube for a heat exchanger

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4938282A (en) * 1988-09-15 1990-07-03 Zohler Steven R High performance heat transfer tube for heat exchanger
US5259448A (en) * 1991-07-09 1993-11-09 Mitsubishi Shindoh Co., Ltd. Heat transfer tubes and method for manufacturing
FR2682747A1 (en) * 1991-10-17 1993-04-23 Electroniques Mecaniques Et Heat exchanger promoting thermal transfer by convection
EP0733871A1 (en) * 1995-03-21 1996-09-25 KM Europa Metal Aktiengesellschaft Heat transfer tube for a heat exchanger

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