Evacuated solar water heater:Evacuated solar water heater is the evacuated tube solar water heater. The evacuated tube solar water heater is a solar water heater with evacuated tube solar collector. The evacuated solar water heater is composed by evacuated tube solar collector, water tank, frame and other connecting lines. Solar water heater is a solar hot water system. This system uses the solar energy to heat the cool water or the heat-transfer fluid. The fuel is free, natural, renewable and without pollution. So the solar water heater has environmental and economic benefit.
