SOLAR AIR-AND-WATER HEATER Russian patent published in 2002 - IPC

FIELD: plants for heating air and water by solar energy where provision is made for change-over from one heat exchanger to another. SUBSTANCE: air or water flows through sinusoidal tube laid on surface of heat accumulator and partially sunken in sand layer of heater accumulator. Accumulator consists of two layers: gravel layer and sand layer. Window glass sealed-up in metal framework is used as translucent coat for air-and-water heater. EFFECT: simplified construction; reduced labor consumption; low cost. 1 dwg