How solar energy works

The sunlight passes through the first layer of glass of the heat absorbing tube to the black heat absorbing layer of the second layer of glass, and absorbs the heat of the solar energy. Since the two layers of glass are vacuum insulated, the heat cannot be transmitted to the outside. It can be transferred to the water inside the glass tube to heat the water in the glass tube. The heated water becomes lighter along the heated surface of the glass tube and enters the insulated storage bucket. The relatively low temperature water in the barrel enters the glass along the back surface of the glass tube. The pipe is replenished, so that the water in the insulated water storage bucket is continuously heated to achieve the purpose of hot water.

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