Isothermal heat pipe system
US4566527A · kind A · utility
Inventors
Key dates
| Filing date | Sep 15, 1980 |
| Grant date | Jan 28, 1986 |
| Priority date | — |
| Expiry date | Sep 15, 2000 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28D15/04
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An isothermal heat pipe system for transferring heat from a primary fluid, such as geothermal water or steam, municipal water system, solar heated water, or the like, to another medium to be heated isothermally, such as a road or bridge deck surface, includes an elongated enclosed chamber with a volatile liquid, such as ammonia or freon, contained therein, a heat exchanger tube positioned to run through the chamber in contact with the volatile liquid, and elongated distribution pipes connected in fluid-flow relation to and extending upwardly from the upper portion of the common chamber above the level of the volatile fluid and extending into divers portions of the medium to be heated in spaced-apart relation to each other in such a manner that there is a continuous downward gradient in each of the distributor tubes from the distal end thereof to the chamber. The primary heated fluid is circulated through the heat exchanger tubes, and a wick material is attached to the external surface of the heat exchanger tube to increase surface area for transfer of heat from the heated primary fluid in the heat exchanger tube to the volatile fluid in the chamber around the heat exchanger tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.