SOLAR COLLECTOR HEAT TRANSFER

摘要

A heat transport device which is notably suitable for use in solar collectors and which comprises a sealed and evacuated tube which contains a heat transport medium which evaporates in a heated section of the tube during operation and which condenses in a cooled section of the tube, the heat transport medium being water in which there is dissolved a small quantity of hydroxide which is still sufficiently soluble in water at 0 DEG C and which is at least partly formed by a hydroxide of one or more of the metals barium, calcium or strontium.