Pre-heat and pressurized solar water heater
Pre-heat and pressurized solar water heater is a new product, it combin the advantages of Non-pressure solar water heater and Separated pressurized solar water heater together. Frankly speaking, the system is put a copper coil inside the Non-pressure solar water heater water tank, there is a pressure exists in the copper coil, the hot water inside the water tank is hot resource. This product improves the problems of traditional solar water heater as limited hot water volume, long heat time, few out water, the worse water quality. The "twice heat exchange" technology makes the high temperature, high efficiency and fast hot water circulation come true.

The vacuum tube collector absorbs heat energy to heat the water in the storage tank, when opening the valve, cold water flow through the inlet and then to the cooper coil, the hot water in the water tank do heat exchange via cooper coil with the cold water, when cold water flow through the copper coil, its temperature been rised gradully, finally the outlet water is hot water (the temperature maybe ¡Ü 5centigrade lower than the hot watr in the water tank). The copper coil can bear the pressure from the running water.
Product information:
Product model: XK-pH
Inner tank material: Food grade SUS304-2B with thickness of 0.4mm.
Outer shell material: Galvanized steel sheet with thickness of 0.4mm.
Vacuum tube: 58-1800mm / 58-2000mm vacuum tube.
Assistant tank: 5L, 7L, 10L, 12L
Recommend copper coil length: 150L for 30m, 200L for 35m, 300L for 35m.
Frame: Galvanized steel plate with thickness of 1.5mm
Aluminum plate with thickness of 1.0mm
Optional angle of frame: 38degree/45degree
Pressure bearing: ¡Ü0.7Mpa
Daili efficiency: ¡Ü55% (¡Ü42% in winter)
Haistone resistance: Dia¡Ü25mm