SFBmodel discards the traditional appearance and the bothering maintennance.at the same time,it creates the time of standing pressfure.it is especially suitable for the heating system of projections,schools,hospitals and hotels and so on. Working theory:1) Solar radiation is absorbed by the solar tubes and converted into heat. Heat pipes then conduct the heat from within the solar tube up to the header pipe2) Water is circulated through the heater, via intermittent pump cycling. Each time when water circulates through the heater the temperature is raised by 5 to 10°C (9 to 18°F). Throughout the day, the water in the storage tank is gradually heated
solar collector