Working Principle

Step 1

The absorber coating on the inner glass tube (evacuated tube) absorbs sunlight and converts it into heat.

Step 2

The inner tube transfers heat to the water in the tubes which transfers heat rapidly up to the manifold.

Step 3

A pump circulates water or heat transfer fluid through the header pipe, carrying heat back to the heat exchanger in a closed loop.

Step 4

The energy from the solar water heating system is recovered and stored in the storage tank. Gradually throughout the day the tank is heated up by solar water heating system.

Step 5

The storage tank can be boosted by a gas/oil boiler for increasing the reliability of the system.