... system11.Ideal for commercial solar water heating applications.Heat pipe solar collector work principle 1.The operation of ... Alloy,Thickness,1.8mm,Insulating layer,compressed rock woolHeat Pipe pure red copper TU1+water,transfer power>=150W, ... Loading Quantity(set)20102787763574022116916613613040HQ278213209172171Price(USD) EU separate copper pipe high-press solar collector for bathroom 300L or 500L