Back to results
US 4,505,263 AGranted
Heat collector
AssigneeTokyo Shibaura Denki Kabushiki Kaisha
InventorsNaoyoshi Nameda, Yooji Surisawa, Yasunobu Nakamoto, Hideshi Sekiya
Life of this patent
Estimating the term…
Abstract
A heat collector for a solar heat utilization system comprises a heat collecting pipe and a reflecting plate for focusing solar light on the pipe. This pipe has a first tubular portion for receiving solar light collected by the reflecting plate, and a second tubular portion for receiving direct solar light. The second portion has thermal expansion coefficient larger by a predetermined amount than that of the first portion, and thermally expands at the same rate as the first portion.
Claims12
A heat collector for a sun utilization system comprising:
- light concentrating means for concentrating solar light to an area of maximum concentration;
- and
- a heat collecting means for allowing a heating medium to flow therethrough including bend preventing means defined by a first arcuate portion heated by solar light concentrated to said area of maximum concentration by the light concentration means and a second arcuate portion heated by direct solar light, the first and second arcuate portions are respectively formed of metal materials having different thermal expansion coefficients, whereby the first and second arcuate portions thermally expand at the same rate to prevent said pipe from bending.
Dependencies are inferred from the claim text.