Working Principle:
1. This non-pressure solar hot water heater relies on the natural circulation of water between the collector and the tank, with auto water feeding.
2. When water in the evacuated tubes is heated, it will rise naturally into the tank, and then the cold water in the tank will flow down to the bottom of the evacuated tubes, resulting in circulation throughout the system
3. Solar thermal energy can be efficiently used by it to generate a practical energy

Features of Integartive non-pressure Solar Water Heater (With Assistant Tank):
1. Low cost of ownership, increased reliability
2. Scientific structure, easy installation
3. High efficient solar heating: with daily average efficiency higher than 60%