SYSTEM FOR HEATING WATER USING SOLAR RADIATION

摘要

The present invention is a novel system that incorporates a solar collector system with direct radiation concentrated using Fresnel lenses. This system accumulates solar energy and uses that energy to heat domestic water. The system comprises a Fresnel lens, two tanks (one inside the other), a copper coil through which the domestic water circulates and which surrounds the inner tank, and thermal insulation for the outer tank. The Fresnel lens directly concentrates the sun's rays onto the exposed glass surface on the upper part of the outer tank. The inside of the main tank houses another smaller tank containing air and the lower part of the latter tank is black in colour, allowing the solar energy to be absorbed more efficiently and the heat generated to be transmitted to the water in the space between the inner and outer tanks. The main tank is thermally insulated with a layer of glass fibre, preventing the heat concentrated in the tank from escaping therefrom. The advantage over other systems is that the entire system is incorporated in one structure that includes the tank with the hot water.