Solar hot-water heater
US4602617A · kind A · utility
Inventor
Key dates
| Filing date | Aug 20, 1985 |
| Grant date | Jul 29, 1986 |
| Priority date | — |
| Expiry date | Aug 20, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/44
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A passive system for heating water by a concentrated beam of diffused solar radiation. A convergent conical incipient beam of diffused sunlight with a cross-sectional area of 15,700 cm.sup.2 is reduced in size to a concentrated circular whole beam with a cross-sectional area of 2.25 cm.sup.2. The reduction in beam size is achieved by three conical lenses which concentrate the beam by refraction and by an annular conical mirror which reflects the beam inward to the vertical axis and concentrates the beam by convergence. The concentrated beam is projected into a hot-water tank onto a metal heating element which absorbs the heat of the beam and transfers the heat to the water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.