Woven ceramic composite heat exchanger
US4545429A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 1982 |
| Grant date | Oct 8, 1985 |
| Priority date | — |
| Expiry date | Jun 28, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S165/905
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
Heat exchangers (2) with particular use as solar receivers are mass-produced by weaving on a textile loom a yarn of high modulus fibers (18, 20) into a repeating series of substantially flat preforms (4), forming a set of interconnected passageways (26, 30, 32) connecting one side of each preforms (4) with an opposite side thereof. The separated preform (4) are each wrapped around a mandrel to give each the shape of a cylindrical sleeve (2). The sleeve (2) is impregnated in a low modulus matrix, dried, and sintered for rigidization. In a first sealing embodiment, the outer sleeve surface (24) is sealed or weatherproofed, and the surfaces of the internal passageways (26, 30, 32) are sealed, but the radiation absorbing inner sleeve surface (22) is not sealed. In a second sealing embodiment, the outer surface (24), the radiation absorbing inner surface (22), and the exchanger ends (14, 34) are sealed, but the surfaces of inner passageways (26, 30, 32) are not sealed. The radiation absorbing surface (22) can be stained with a material to heighten solar absorptivity. The exchanger (2) is placed within a weatherproof reflective container (40).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.