Vacuum tube solar water heater is composed of collector, water storage tank and bracket. The collector can directly convert solar energy into heat energy. The collector makes use of the working principle of floating, cooling and sinking of hot water to make water can microcirculation, thus achieving the purpose of heating. It can be used for top water work, and the tank can be jacketed or coiled. At the same time it can also be divided into three categories, the following describes the working principle of these three types of vacuum tube solar water heaters.

Vacuum tube solar water heaters are also industries that rely on solar energy development. It provides the public with new water heaters that are environmentally friendly, energy efficient, safe and hygienic. It provides energy-saving equipment that provides cold water for people's daily lives and production, and it is also used in many places.