cleanrepublic.com Like our ideas? Please become an FB fan of Clean Republic! Easily harness the power of the sun to heat anything inside these tubes! Even boils water after just a few hours in the sun! No moving parts. These incredible double-wall tubes have a thermos-type vaccum seal between their walls, a light absorbent coating on the outer wall of the inner tube, and three heat reflective layers on the inside surface. Sunlight and heat go in, but don’t come out until you want it.
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www.heating-solutions-ireland.com Jack Foley 086-3823062 Solar Vacuum Glass Tubes (SVGT) absorb solar energy, converting it into heat for use in water and air heating SGVT are also referred to as evacuated tubes, as the space between the two glass layers is evacuated to form a vaccum. SGVT have already been used for years in Germany, Canada, China and the UK. There are several types of solar tubes in use in the solar industry. The Solarwyse’s SK-TF uses the most common “twin-glass tube” also known as the “Sydney Tube”. This type of tube is chosen for its reliability, performance and low manufacturing cost. Each solar tube consists of two glass tubes made from extremely strong borosilicate (“Pyrex”) glass. The outer tube is transparent allowing light rays to pass through with minimal reflection. The inner tube is coated with two separate layers of special selective coating (Al-N which features excellent solar radiation absorption and minimal reflection properties. The top of the two tubes are fused together and the air contained in the space between the two layers of glass is pumped out while exposing the tube to high temperatures. This “evacuation” of the gasses forms a vaccum, which is an important factor in the performance of the solar tubes. Why a vaccum? As you would know if you have used a glass lined thermos flask, a vaccum is an excellent insulator. This is important because once the solar tube absorbs the radiation from the sun and converts it to heat, we don’t …
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