JPS57104095A - Heat transfer tube with groove on inner face - Google Patents
Heat transfer tube with groove on inner faceInfo
- 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
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.
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)
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 |
-
1980
- 1980-11-26 JP JP16601480A patent/JPS57104095A/en active Pending
Cited By (4)
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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