SOLWET ADVANCED natural circulation systems; circulation in the solar primary circuit is caused by natural convection, due to the differences in density between the hot and cold working fluids. The cycle begins as the fluid passes though the collectors, where it is heated by solar radiation. As the fluid is heated, it rises up towards the cylinder located above the collector. As the fluid travels towards the elevated cylinder, it transfers its heat and chills. The heavier, chilled fluid then descends through the return pipe to the bottom of the collector. The main advantage is that the system functions without the need for pumps or any auxiliary electrical power.
Delhi, India
