Thermo-siphon-type solar store for heating water has outer storage tank with several round apertures having ring seals

摘要

The store has an outer storage tank (1) with several round apertures in its bottom region, having ring seals on them. Twin-walled vacuum tubes (2) project through them at close horizontal spacing. The outer tank contains an inner storage tank (3) filled with drinking water, with connecting lines for input at the bottom and output at the top. An expansion tank (4) is fitted at the top of the outer tank.