Verfahren zur Frostschutzsicherung von Solarkollektoren
Date Issued
1992
Author(s)
Ufheil, M.
Patent No
1991-4123169
Abstract
Process for ensuring the frost protection of solar collectors which use water as a heat carrier, whereby a liquid is used as a substitute for the water in the heat carrier circuit of the solar collector when a preset temperature is undershot in the solar collector, whereby the liquid is heavier than water, insoluable in water and frost-proof.