JIS A1425:1985 pdfダウンロード。Test Method of Thermal Performance for Solar Collectors Scope This Japanese Industrial Standard specifies the testing method forthethermal performance of non-tracking solar heat collectors of the flat platetype, vacuum glass tube type, and other types which collect solar heat inthe form of sensible heat by compulsorily circulating a liquid as the heatcollecting medium, hereinafter referred to as the “solar collectors”. This standard also covers solar collectors having reflectors， thosehaving light collectors, and those having an operating medium for con-ducting heat from the absorber to the heat collecting medium; such as heatpipe type solar collectors, but does not apply...