solar heating system for project

Solarwater heating systemFeature1)it isavailable for swimming pool, hotel, school, hospital and so on 2)Automatic water supply, electrical heater, good recycling for environment protection 3)Investment once and benefit for ever 5)No harm and pollution, economical and clean healthy 6)It can be connected with pressure tankSpecification of solar water heating system: 1)Vacuum tube type: 58 x 1, 800mm tri-hi vacuum tube 2)Super-conductvacuum tube, thickness of 1.5mm 3)Vacuum tube operate without water and anti-freeze 4)A copper flow way in manifold is made of red copper 5)Manifold of collector is made of aluminum alloy 6)Intercept efficiency: 93% 7)Heat loss: 0.22W/m2k 8)Operating pressure: 0.6mPa 9)Hail resistance: 25mm 10)heat insulation: 72hours