From an ideal point of view, this could be the case. However, apart from water tank insulation, solar water heater insulation also includes insulation of vacuum tubes, pipelines, etc.
If the vacuum tube has no heat dissipation, the pipeline has no heat dissipation and the water tank has no heat dissipation (fully enclosed). However, the vacuum tube will "rest" at night because there is no light, so the temperature will not continue to rise. In addition, solar water heaters are low temperature products, and the temperature will not exceed 100 degrees no matter how high they are. So there is a certain scientific relationship between the number of vacuum tubes and the capacity of the water tank.
The heating and heat preservation functions of solar water heaters are explained below.
1. The essence of the heat preservation function is the heating function.electric ge at constant temperature. When the water temperature in the water tank is lower than the set value, the electric heater starts heating. is 5 degrees higher than the set value, the electric heating stops When the water temperature returns to When it is lower than the set value, the electric heating starts again, and so on, so that the water temperature water is kept close to the set value. value, thus starting the heat preservation effect.
2. The heating function is to convert light energy into heat energy to heat cold water.