Fixing of countercurrent preventing material of solar heat collector

TLDR: In this article, the authors proposed a method to prevent the contact of countercurrent preventing material with a transparent plate and a heat collecting plate for keeping the efficiency of heat collection at a high level by a method in which plural spacers are fixed to proper places on the back of a transparent substrate provided in the upper opening portion of a box, and the countercurrent protecting material is fixed the lower side of the spacers.

Abstract: PURPOSE:To prevent the contact of c countercurrent preventing material with a transparent plate and a heat collecting plate for keeping the efficiency of heat collection at a high level by a method in which plural spacers are fixed to proper places on the back of a transparent plate provided in the upper opening portion of a box, and the countercurrent preventing material is fixed the lower side of the spacers. CONSTITUTION:In a solar heat collector 1, heat insulators 2 are provided to the internal side walls and bottom of a box, an aluminum foil 3 is laid above the heat insulator 2, a heat collector 6 is fixed to the upper part of the bottom aluminum foil 3, and a transparent plate 7 is provided at the upper opening portion of the box. In this case, a countercurrent preventing film 9 is provided between the transparent plate 7 and the heat collector 6, when one or plural spacers 8 of a heat-resistant and transparent synthetic resin, etc., having U- shaped cross section, are fixed with an adhesive to the back of the transparent plate 7. Then, the countercurrent preventing film 9 is fixed with screws to the lower sides of the spacers 8 fixed to the transparent plate 7.