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Separated series of DHW (Domestic Hot Water) system is made up by collector, bearing water tank, recirculating pipe line and control system. The circulation pump forces heat carrier to exchange heat between collector and reserve tank when temperature controller making the opening of circulating pump and hot up water temperature in reserve tank.
The principle of the system
1. The collector applies the fourth generation of solar collector---heat pipe vacuum collector to transfer the solar power to heat energy.
2. When the temperature of TC is higher than that of TR, the controlling device will start the circulating pump.
3. The circulating pump make the working medium circulate in the system.
4. The heat is transferred from the heat collector to the water tank by the heat exchanger.
5. During the working process of the circulating pump, when the temperature difference is less than a set point, the circulating pump will stop.
6. When TR (the temperature of the water tank) reaches the highest set point, the controlling device will close the circulating pump.
7. The electrical heating device will automatically make the temperature of the above part of water tank stay at the set point.