JPS5758094A - Heat transfer pipe - Google Patents
Heat transfer pipeInfo
- Publication number
- JPS5758094A JPS5758094A JP12404781A JP12404781A JPS5758094A JP S5758094 A JPS5758094 A JP S5758094A JP 12404781 A JP12404781 A JP 12404781A JP 12404781 A JP12404781 A JP 12404781A JP S5758094 A JPS5758094 A JP S5758094A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- heat transfer
- groove
- liquid
- smooth
- 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
Abstract
PURPOSE:To improve the heat transfer efficiency of the captioned heat transfer pipe and to reduce a pressure loss by a method wherein a V-shaped spiral groove is formed on the inner surface of a smooth pipe to thereby produce the heat transfer pipe with the depth of the groove being 0.02-0.2mm. and the pitch thereof being 0.1-0.5mm. CONSTITUTION:In an arrangement in which a fluid varying in phase is flowed within the pipe 1 in a double phase condition by means of a pump (not shown), the V-shaped spiral groove 2 is formed on the smooth inner wall surface of the pipe 1. In this case, the depth (h) of the groove 2 is made to be in the order of 0.02-0.2mm. and pitch (p) thereof is made to be in order of 0.1-0.5mm.. Consequently, when the liquid is boiling, it becomes itself a film over the entire grooved inner wall surface of the pipe while it is subjected to a rotary force along the surface so that the thin groove 2 acts as a boiling nucleus to thereby increase the heat transfer efficiency of the pipe. Further, as the groove 2 is made smooth by being covered with the liquid, the loss of pressure of the liquid is reduced.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12404781A JPS5758094A (en) | 1981-08-10 | 1981-08-10 | Heat transfer pipe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12404781A JPS5758094A (en) | 1981-08-10 | 1981-08-10 | Heat transfer pipe |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5758094A true JPS5758094A (en) | 1982-04-07 |
Family
ID=14875672
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12404781A Pending JPS5758094A (en) | 1981-08-10 | 1981-08-10 | Heat transfer pipe |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5758094A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60142195A (en) * | 1983-12-28 | 1985-07-27 | Hitachi Cable Ltd | Heat transfer tube equipped with groove on internal surface thereof |
US4660630A (en) * | 1985-06-12 | 1987-04-28 | Wolverine Tube, Inc. | Heat transfer tube having internal ridges, and method of making same |
US4938282A (en) * | 1988-09-15 | 1990-07-03 | Zohler Steven R | High performance heat transfer tube for heat exchanger |
FR2837270A1 (en) | 2002-03-12 | 2003-09-19 | Trefimetaux | GROOVED TUBES FOR REVERSIBLE USE FOR HEAT EXCHANGERS |
FR2855601A1 (en) | 2003-05-26 | 2004-12-03 | Trefimetaux | GROOVED TUBES FOR THERMAL EXCHANGERS WITH TYPICALLY AQUEOUS MONOPHASIC FLUID |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2426044A (en) * | 1941-09-19 | 1947-08-19 | Servel Inc | Heat transfer device with liquid lifting capillary surface |
-
1981
- 1981-08-10 JP JP12404781A patent/JPS5758094A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2426044A (en) * | 1941-09-19 | 1947-08-19 | Servel Inc | Heat transfer device with liquid lifting capillary surface |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60142195A (en) * | 1983-12-28 | 1985-07-27 | Hitachi Cable Ltd | Heat transfer tube equipped with groove on internal surface thereof |
US4658892A (en) * | 1983-12-28 | 1987-04-21 | Hitachi Cable, Ltd. | Heat-transfer tubes with grooved inner surface |
JPH0421117B2 (en) * | 1983-12-28 | 1992-04-08 | Hitachi Cable | |
US4660630A (en) * | 1985-06-12 | 1987-04-28 | Wolverine Tube, Inc. | Heat transfer tube having internal ridges, and method of making same |
US4938282A (en) * | 1988-09-15 | 1990-07-03 | Zohler Steven R | High performance heat transfer tube for heat exchanger |
FR2837270A1 (en) | 2002-03-12 | 2003-09-19 | Trefimetaux | GROOVED TUBES FOR REVERSIBLE USE FOR HEAT EXCHANGERS |
FR2855601A1 (en) | 2003-05-26 | 2004-12-03 | Trefimetaux | GROOVED TUBES FOR THERMAL EXCHANGERS WITH TYPICALLY AQUEOUS MONOPHASIC FLUID |
US7267166B2 (en) * | 2003-05-26 | 2007-09-11 | Trefimetaux S.A. | Grooved tubes for heat exchangers that use a single-phase fluid |
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