INRICHTING VOOR HET WINNEN VAN WARMTE IN TENMINSTE EEN DEELGEBIED VAN HET SPECTRUM VAN DE ZONNESTRALING

摘要

A method of recuperating heat in the partial range of the solar radiation spectrum including the step of mixing variously colored organic pigments into a fluid circulated through a hollow body, said fluid further including an antifreezing medium which is non-corrosive to the hollow body.