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You can buy it from supermarkets as steaks to pan-fry at residence, in cafés as connoisseur burgers, or elegantly served in additional upmarket restaurants. A solar vacuum tube cookerEvacuated tube photo voltaic cookers are basically vacuum sealed between two layers of glass. The vacuum allows the tube to behave each as a “super” greenhouse and an insulator. The central cooking tube is created from borosilicate glass, which is proof against thermal shock, and has a vacuum beneath the surface to insulate the inside. The inside the tube is lined with copper, stainless steel, and aluminum nitrile to raised take in and conduct warmth from the Sun’s rays. Solar cooking tube systems use a reflector to reinforce the thermal power capturing.