... into usable heat2.The water is normally absorbed by water, or a freeze resistant water mix, which can used ... Special designed for the heat-pipe solar water heater systems ,it is easy to combine with ... exsiting water heating systems for commercial,building,hotels,hospital, ... ,1.8m2.Number of the thbes:15-363.Capacity:100L---500L4.Out tank shell: Stainless steel, thinckness:0 ...