Solar water heaters convert solar energy into heat, heating the water from low temperature to high to meet peoples needs of hot water both in life and production.

It is a device used to transfer heat from the hot fluid to cold fluid to meet the technical requirements, it is an industrial application of the convective heat transfer and thermal conductivity.

Plumbing radiator is cooling equipment taking water as a heat medium and they are classified into the family class, factory class according to the using field.