Solar heat collector and storage system

A solar heat collector and storage system including:

• a receptable for a heat storage solution having a relatively low evaporation rate compared with water;
• a structure having an inclined roof;
• a first pipeline extending from the receptacle to an upper position on the roof;
• an apertured pipeline coupled to said first pipeline and extending along the roof at said upper position thereon;
• pumping means coupled to the first pipeline for circulating the solution from the receptacle through the first pipeline to said apertured pipeline at the upper position on the roof to permit the solution to pass through openings in said apertured pipeline and to flow freely across the roof in an exposed condition to the atmosphere from the upper position to a lower position on the roof, so that the solution may absorb heat from the sun as the solution moves across the roof from the upper position to the lower position to have a higher temperature at the lower position as compared with the temperature at the upper position;
• collector means comprising a slotted pipeline extending along the roof and mounted at the lower position on the roof to collect the heated solution at the lower position;
• a drain pipe coupled to the slotted pipeline to return the heated solution to the receptable;
• means in said receptacle for deriving heat from the heated solution therein;
• and a diversion valve coupled to the drain pipeline and settable to a position in which the flow of liquid in the drain pipeline is prevented from returning to the receptacle.