greenpowerscience.com This is a large Fresnel Lens focused on a copper tube with a 12 V pump (powered by two 6 watt solar panels) with water circulating through the unit. Water, seven gallons, was raised from 63 F to 106 F in one hour. It is not super efficient as heat is lost at the open top of the glass tank. This is designed to illustrate one method of solar heating a swilling pool with a Large Fresnel Lens. TESTING HDD AQUA BLOCK.
Video Rating: 4 / 5
PART 3 DiY Wooden Frame. This is a simple alternative to the soda pop can solar furnace. Simply placing a black backer behind glass with a very thin air gap allows for maximum air mixture. In later videos we will testing some 12v blower fans for different CU volume.