heat pipe collector

7.Already got Solar Keymark for this model.

6.The check valve(non-return valve )prevents heat from the tank flowing towards the collectors should the tank be warmer.(e.g at night)

5.When a present tank temperature is reached at Tmax,the controller switches off the pump

4.With the pump running, if delta T is not met, the pump will switch off.

3.Heat from the collector is transferred to the domestic water through the heat exchange coil in the tank.

2.The pump circulates a heat transfer liquid around the loop

1.The controller will switch on the pump when the temperature at the collector sensor TC is higher than the return temperature TR by at lest the pre selected(delta T)amount

Heatpipe Solar collector
Use heatpipe, inside use acetone as heattransfer liquid
Collector on the house, tank in home, pump