Concentric tube heat exchange assembly with improved internal fin structure
US4284133A · kind A · utility
23Cited by
7References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 19, 1979 |
| Grant date | Aug 18, 1981 |
| Priority date | — |
| Expiry date | Sep 19, 1999 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28F2215/08
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A heat exchanger formed by concentric, spaced tubes defining a substantially annular chamber therebetween. There is an internal metallic fin comprising a strip of corrugated sheet metal extending spirally within the annular chamber with the adjacent turns of the spirally formed strip being spaced from each other to provide a spiral passageway between the side edges of adjacent turns. The metallic fin corrugated sheet metal strip bears a plurality of small apertures to significantly improve the boiling heat transfer coefficient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.