Solar water heater: 1. Materials: box (preferably an iron box), small can (must be metal), foam, reflector (you can use aluminum foil from cigarette boxes, mirrors, old CDs...), adhesive tape, black paint, cellophane.
2. Boxes and small cans should be painted black (this can absorb more heat, as black can absorb light). Dig a hole in the foam (also painted black) just enough to insert vertically. the small box contains 3/5 (acts as thermal insulator to prevent heat dissipation), 2/5 is exposed outside to receive sunlight. Put the foam and the small box in the box, seal it with cellophane and make a support. frame behind the box so that the box can face the sun. Place it diagonally and install reflectors on the back, top, left and right of the box. The rDeflectors underneath can be placed directly on the ground in front of the box (the box). the larger the reflectors, the better, as they can absorb more light and heat). The reflected light should be able to shine on the box or small tank so that the box and small tank can absorb more heat. is made.
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