Solar water heater
150L intergrated color coated steel solar water heater
May 04 / 2017
The vacuum tube is the core of solar water heater,its structure is similar to an elongated thermos bottle which has vacuum space between inner and outer glass.On the surface of inner glass is coated with spectral selective absorbing painting using a special process for maximum absorption of the solar radiant energy .When the sunshines on the heater,the photons hit the coatings making the solar energy transform into the heat energy.The water absorbs heat from the outer coating to make the water temperature increase and the water density decrease.Hot water moves upward while the proportion of cold water drops.Hot water is always at the top.
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