DIY SOLAR TUBES EVACUATED VACUUM TUBE SOLAR HOT WATER Boil water with the power of the SUN

Boil water just by placing it in the sun. www.greenpowerscience.com This is a simple process to make your owns solar evacuated vacuum tubes from any bottle and a vase from Walmart.

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Solar Water Heater Vacuum Tube 1pc Reviews

solar vacuum tube borosilicate insulated glass heating element included exact as on picture one pc Standard vacuum tube : Vacuum tube: 3.3high borosilicate glass the absorption rate is 0.90-0.93 (AM1.5) the emission rate is 0.05-0.075 (80?±5?) vacuum tightness is P?5.0*0.0001Pa idle sunning […]

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