Solar Absorption: Solar radiation is absorbed by the evacuated tubes and converted into heat.
Solar Heat Transfer: Heat pipes conduct the heat from within the solar tube up to the header.
Solar Energy Storage: Water is circulated through the header, via intermittent pump cycling. Each time the water circulates through the header the temperatures is raised by 5-10°C / 9-18°F. Throughout the day, the water in the storage tank is gradually heated.