Solar-heater for water, using roof - has pump controlled by temp. difference and operating at intervals to obtain water by higher temp.

摘要

The solar heater for water has a pump which operates at appropriate temperatures and at intervals. The pump lifts water to the roof, and the water runs through an isolated, serrated channel. In winter, air escapes through a bypass. The pump operation is controlled by the temperature on the roof. ADVANTAGE - The air vent allows operation in winter, even in frosty weather. As the pump operates only at intervals, the device heats up to higher temperatures when cold water is not present, allowing the average temperature of the water from the device to be higher.