For a container of solar water heater work at night. Because solar water heaters can only work in the daytime, and people usually use hot water at night, so the hot water produced by the collector in the daytime must be stored through an insulating water tank. Volume is the total amount of hot water used every night.

Abstract Once there is a sun in winter, in fact, ordinary household solar water heaters can work. And it is best to use a domestic solar water heater that can supply hot water when it is cloudy or rainy or when the sunshine intensity is weak. In general, as long as the perfect anti-freezing measures

(1)The development of solar energy utilization technologies Due to increasing human demand for energy, the growing shortage of conventional energy sources, rising oil prices, global warming and environmental pressures, all countries in the world have shifted their strategic focus to renewable energy