... plate solar system we passed CE,GMC,ISO certification high efficient,stable performance, it is widely used split flat plate solar systemWorking principle ... have three parts of the split pressurized solar water heater system:one is heat-pipe solar collector,the second is the water tank ... .4.Copper coil:15m-20m each, diameter 12mm,thickness 1mm. 5.Heat pipe:Ati-freeze:-35C6.Capacity:100L,150L,200L,250L ...