... to dormitory,hotel,school,hospital 2012 New designment doule wings vacuum solar project or manifold heat collector module Technical Data1.Inner manifold ... .Frame:galvanized ,1.4mm, 170*378 cm 5.Vacuum tube: three high vacuum tube,58*1800*506.Inlet and outlet Male:1/2 ... pool,school,hospital and other commercial using water.5.With vacuum tube absorbing sun radiation ,the heat collecting efficiency is so ...