Water heating apparatus for use in home, has duct provided on bottom part of water tank of heating type radiator, and curved concave shaped aluminum foil formed between radiator and metal box

摘要

The apparatus has a metal box whose front part is provided with a glass for entry of solar rays. A heating type radiator is provided inside the box. A curved concave shaped aluminum foil is formed between the radiator and the box. A duct is provided on a bottom part of a water tank of the radiator.