Inner tank: stainless steel SUS304/316L, thickness:1.0mm-1.2mm Outer tank: painted steel-0.4mm/aluminum-zinc coated steel-0.45mm/stainless steel SUS201/stainless steel SUS 304 Vacuum tube: QB-AL-N/AL-47-1500/58-1800 Insulation: 50mm-60 polyurethane Frame: coated galvanized steel-1.5mm/stainless steel SUS430-1.5mm/2.0mm aluminum alloy Accessories: intelligent controller, electric heater, magnesium bar, PT valve, negative valve etc. Characters: 1) Easy Maintenance No glycol, simple structure. No annual and periodical check-ups or maintenance is necessary. Blind sleeve design, no pollution, no-leaking heat pipe, easy installation. No water in vacuum tubes, one broken tube will not affect the function of the whole system. 2) High Performance With the cutting-edge vacuum-tube collecting technology, over 92% of sunshine energy is converted to thermal energy for heating and no circulation loss. Thicker insulation layer, functioning well in winter, even in minus-30-degree environment. 3) High Reliability System is simply working with the city net water, without pumps. Inner tank made by stainless steel SUS316-1.2mm. Working with high pressure, directly connected to running water, automatically functioning. With T/P valve and exhaust valve, it protects the tank from shrinking. 4)Year-round Operation With the freezing-proof technology, the system is designed and installed to operate for all seasons. Electric heater is optional to use, to ensure plenty hot water in rainy days. Principle: When vacuum tube absorb solar energy and heat the heat pipe ,the working fluid vaporizes and rise to the top of the heat pipe condenser, when heat pipe condenser meet cold water and cool down, the working fluid will fluidity and return to the bottom of the heat pipe, so once and once again to repeat this process.
