Under CopyrightStryi-Hipp, GerhardGerhardStryi-HippKramer, KorbinianKorbinianKramerRichter, J.J.RichterThoma, ChristophChristophThomaFortuin, StefanStefanFortuinMehnert, StefanStefanMehnertWelz, ChristianChristianWelz2022-03-117.12.20122011https://publica.fraunhofer.de/handle/publica/37508710.24406/publica-fhg-375087enthermische AnlageGebäudetechnikSolarthermieSolaranlage621697Towards a unified standard for solar air heating collectorsconference paper