Solar Energy - Collector components and materials - Part 1: Evacuated tubes - Durability and performance (ISO/DIS 22975-1:2014); German version prEN ISO 22975-1:2014
Solar energy - Collector components and materials - Part 1: Evacuated tubes - Durability and performance (ISO 22975-1:2016); German version EN ISO 22975-1:2016— 39 стр.