Water heater for e.g. swimming pool, has opaque supply tube rolled spirally on cable drum for forming multidirectional bobbin capturing solar energy, where tube is connected to base of tank and channel, and enclosure in laminated glass

摘要

The heater has an opaque supply tube of a variable length and diameter based on the volume of the liquid to be heated. The tube is rolled spirally with multilayer joined spires on a cable drum (1) made in bakelized plywood for forming a multidirectional bobbin (3) capturing a solar energy in a vertical fixed position, where the tube is connected to a base of a tank and a channel. An enclosure (4), in a laminated glass, in parallelepiped rectangular shape creates a greenhouse effect.