TODAY’S PATENT – CLOSED SYSTEM SOLAR HEATER

The CLOSED SYSTEM SOLAR HEATER was invented by Emil L. Chayet (Largo, FL) on 8^th of March 1977, bearing the patent number US4010734A.

The present invention relates to more efficient central heating systems using heat accumulated in storage masses water heating systems combined with solar energy.

This invention is a closed type solar heating system that consists of a solar collector, a water storage tank and water lines in between. The solar collector is made up of a continuous length of coiled tubing in helical array of closely adjacent turns, with the water inlet being the outermost turns and water outlet being the innermost turns. Cold water is taken from an outlet from the bottom of the storage tank and pumped to the solar collector, and heated water is supplied to the storage tank from the solar collector water outlet along with cold water from external supply through a common adjacent inlet at the top of the tank. The water line between the solar collector and the storage tank has a U-shaped section which acts as heat trap to minimize the loss of heat from the tank.