Working principle:

There are two layers water tank, heat transfer fluid circulated between water tank and flat plate collectors naturally. Then it will be heated and transfer energy to water in inner tank.

Hot water from this kind of solar water heater is pressurized. It is easily installed on the house roof.

Bontel Advantages:

1.Flat plate collectors with high weather-proof selective absorbing film from full-automatic magnetron sputtering production line developed by Bontel;

2.Flat plate collectors with Bonding heat transferring technology and laser welding technology;

3.Flat plate collectors with high quality low-iron tempered glass with surface treatment to get high transmittance and low emittance;

4.Enamel inner tank with magnesium rod show excellent anticorrosion performance;

BTE Solar Advantages:

1. Highly efficient absorber of high performance with daily average efficiency over 76%;
2. BTE blue film absorber with automatic production line,can supply you stable high quality products;
3. Withstand pressure of  6 Bar, can be connected directly with city water or your big water tank;
4. Simple structure, easy to assembly and install in short time, no breakage;
5. Best insulation with polyurethane foam;
6. Can be used all year round in the cold climate;
7. Can be used together with auxiliary electric boost;
8. Long service life, can be used over 15 years;