Our swimming pool solar heaters use 58*1800 size solar vacuum tube. The inner manifold we use SUS304 stainless steel or SUS316 stainless steel. SUS316 stainless steel is often used in the areas with poor quality water. And the out manifold we use galvanized steel, SS201 stainless steel or SUS304 stainless steel. The tube distance is 75mm.
Working Principle of Solar Collector:
Combined various collectors with water storage tank as a complete projects.
Water in solar vacuum tube for heat transferring, by circulation pump and relative system to take the heat to water tank.
Non-pressure Vacuum Tube Solar Thermal Collector consists of all-glass vacuum tube, non-pressurized manifold and support bracket, working principle is the same as integrated non-pressurized system, taking advantage of the natural circulation due to larger proportion of hot water to cold water.
Technical Parameters of Solar Collector: