Heat transfer pipe
US4044797A · kind A · utility
52Cited by
8References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 14, 1975 |
| Grant date | Aug 30, 1977 |
| Priority date | — |
| Expiry date | Nov 14, 1995 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28F1/40
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A heat transfer pipe for use in a heat exchanger such as air conditioner, freezer and boiler, wherein grooves are formed in the inner wall surface of the pipe, which are by far finer in size than the grooves that have been provided for the purpose of increasing the heat transfer area in general, and slanting relative to the axis of pipe, to thereby improve the heat transfer rate without increasing the pressure loss caused to the fluid flowing through the pipe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.