... collector, solar water heater, solar collector, evacuated tube & heat pipe, solar renewable energyApricus advantages1. Solar Keymark, SRCC, CSA, ... sunlight and converts it into heat.Step 2: Steam forms inside heat pipe which transfers heat rapidly up to the manifold. ... 3: A pump circulates water or heat transfer fluid through the header pipe, carrying heat back to thestorage tank. Gradually throughout ...