ASell new kind of solar water heater

Description

1.Water is fed automatically by the water pressure.
2. A heat exchanger is built in top of the inner tank,which is made of straight copper pipe rather than copper coil. This innovation improves the thermal efficiency extremely.
3.Antifreezing,working excellently in the winter.
4.Heat insulation is *0mm thick, Long time heat preservation.
5.No incrustant for the lifetime.
6.High quality,no maintenance or after-sales service is needed.
7.Fresh and drinkable water quality.
8.Multiple connections is available for huge projects.
9.Lifespan is at least *5 years. Five years warranty for the whole machine.

How it works:
1.The vacuum tubes absorb the sunlights and heat the water in the tank.
2.The heat exchanger absorbs the heat of the hot water in the tank.
3.The inlet cold water is heated by the heat exchanger.
4.Hot water out.