JPS6453715A - Heat transfer pipe - Google Patents
Heat transfer pipeInfo
- Publication number
- JPS6453715A JPS6453715A JP20785687A JP20785687A JPS6453715A JP S6453715 A JPS6453715 A JP S6453715A JP 20785687 A JP20785687 A JP 20785687A JP 20785687 A JP20785687 A JP 20785687A JP S6453715 A JPS6453715 A JP S6453715A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- heat transfer
- transfer pipe
- heat
- cracks
- 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
Abstract
PURPOSE:To prevent the deterioration of the thermal efficiency of a heat transfer pipe and development of cracks by forming a metallic layer having the softer property and equal or more superior heat conductivity than inner and outer pipes. CONSTITUTION:The heat transfer pipe is composed of the inner pipe 5 and outer pipe 6 and formed of a ferroalloy steel prescribed heat treated. Then, in the clearance between the inner pipe 5 and the outer pipe 6, an alloy layer 7 is formed by mechanical or metallurgical means out of any one of Cu, Al, Ni, Fe and Ag or based on these metals. At this time, because the materials forming the alloy layer 7 are soft and their heat conductivities are equal or more sperior to the pipe 5, 6, the deterioration of the thermal efficiency is prevented. Further, as the metallic layer 7 exists, the development of the cracks of the heat transfer pipe is prevented.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20785687A JPS6453715A (en) | 1987-08-21 | 1987-08-21 | Heat transfer pipe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20785687A JPS6453715A (en) | 1987-08-21 | 1987-08-21 | Heat transfer pipe |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6453715A true JPS6453715A (en) | 1989-03-01 |
Family
ID=16546665
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20785687A Pending JPS6453715A (en) | 1987-08-21 | 1987-08-21 | Heat transfer pipe |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6453715A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5297410A (en) * | 1991-12-10 | 1994-03-29 | Bundy International Limited | Method of manufacturing a multiple-walled tube |
WO2001043895A1 (en) * | 1999-12-14 | 2001-06-21 | Carlieuklima Spa | Method to produce radiating tubes and relative radiating tubes for radiancy heating lines |
-
1987
- 1987-08-21 JP JP20785687A patent/JPS6453715A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5297410A (en) * | 1991-12-10 | 1994-03-29 | Bundy International Limited | Method of manufacturing a multiple-walled tube |
WO2001043895A1 (en) * | 1999-12-14 | 2001-06-21 | Carlieuklima Spa | Method to produce radiating tubes and relative radiating tubes for radiancy heating lines |
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