Preheated Solar Water Heater
This preheated solar water heater adopts built-in copper coil indirect heat exchange structure, separating tap water and heat storage medium completely to avoid scaling inside vacuum tubes. Equipped with magnetron sputtering aluminum-nitrogen-aluminum vacuum tubes and 55mm thick PU heat preservation layer, the SUS304 stainless steel inner tank has multiple thickness options and 100L-300L tank capacities. Stainless steel support ensures long service life, and the matched auxiliary tank with automatic valve stabilizes internal system pressure. It features small temperature difference between inlet cold water and outlet hot water, steady hot water supply under municipal tap water pressure, widely used for household domestic hot water.
Specification:
·Inner Tank Material: SUS304-2B food-grade stainless steel, thickness options: 0.4mm / 0.5mm / 0.6mm
· Outer Tank Material: Stainless steel, thickness: 0.31mm / 0.4mm
· Copper Coil: diameter 12mm, wall thickness 1mm
· Heat Preservation: integral polyurethane foam insulation, thickness 55mm
· Magnetron sputtering Al-N-Al all-glass evacuated heat collecting tubes
· Tube Specification: Φ58mm×1800mm
· Support Material: Stainless steel bracket, thickness:1.2mm /1.5mm
· Tank Capacity: 100L~300L
System Work Principle：
· The evacuated tube collector absorbs solar heat energy and heats the water stored inside the thermal storage tank.
· When hot water is used, cold tap water flows into the copper coil heat exchanger. The copper coil absorbs stored heat and continuously transfers thermal energy to the cold running water to raise its temperature.
· Benefiting from the excellent heat exchange performance of the copper coil, the outlet hot water temperature differs from the tank internal water temperature by no more than 3℃. Cold tap water enters the copper coil under municipal water pressure to fully absorb heat, so instant hot water can be supplied stably.
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