The solar central hot water system consists of collector heater, tank of keeping warm, controlled system, recycling pump and fittings and so on. It changes solar energy into heat energy by collector heater, and changes cold water into hot water, and it can supply water automatically according to controlled tank and realize followings by adjusting controlled system:

Difference in temperature recycling - raise heat efficiency.
Pipe recycling - supply hot water once opening.
Electric heater - supply hot water at constant temperature all day and all night.
Equipment of preventing from freezing - work well in winter.
The whole system works automatically, safely and handy, and it may be fixed freely. You can connect the solar project with gas or boiler or electric heater, so it can meet the customers' need even in cloudy day or in winter; computerized controller makes sure that it can supply hot water all day and all night