Features: The heat pipe sreies solar collector are always connected with existing heating supply device. The selective coating on the inner cover or the evacuated tubes converts solar energy into heat energy and transfers heat to the heat pipes by Aluminum fins. The liquid in the heat pipe changes into vapour which rises to the codenser. The heat conducts to the heat transfer liquid(anti-freezing liquid or water)via a copper pipe. This transference of heat in the liquid creates a cintinuous circulation as long as the collector is heated by the sun