Solar collector.
The largest portion of this solar converters operates at temperatures of about 100-200oS. With their help, heated water, desalinate it, rise from the wells. In solar kitchens preparing meals. Concentrated heat of the sun dried fruit, vegetables and even frozen products. Sun’s energy can accumulate the day to heat homes and greenhouses in the night. The advantage of solar thermal converters is the high efficiency. Modern collectors he reaches 45 – 60%. Suntrap thermal efficiency increases if they are provided with one or another concentrating radiation mirrored surfaces. Very promising for the eco-houses would form a flat solar cells with linear concentrators radiation – Fauconnier. Hubs Fauconnier have a cross-section V-shaped (flat or parabaloidnuyu, the latter is more expensive but more efficient). Solar systems require virtually no maintenance, no need of repair and require only the cost of their construction and maintenance of cleanliness. Work, they can indefinitely ..Solar collector water heater is designed to supply hot water, mostly individual farms. The device consists of a box with a coil, cold water tank, tank battery and pipes. The box is permanently set at an angle of 30 -50 with orientation on the south side. Cold, heavier, water constantly enters the bottom of the box, where it is heated and expelled cold water enters the tank battery. It can be used for heating, shower, or for other household needs. Afternoon performance at a latitude of -50 approximately equal to 2 kW / hr per square meter. Water temperature in the tank-battery reaches 60 … 70oS. Efficiency of the installation – 40%.
Anyone who has ever been in greenhouses, knows how drastically different conditions from those around inside it: Temperature above it (the mechanism of the greenhouse effect). The sun’s rays pass almost unhindered through the transparent cover and heat the soil, plants, walls, roof structure. In the opposite direction dissipates little heat due to high concentrations of carbon dioxide. On a similar principle operates solar thermal collectors. This – wooden, metal or plastic boxes, with one side closed single or double glass. Inside the box for maximum absorption of sunlight is inserted into a wavy sheet metal, painted black. In the box is heated by air or water, which periodically or continuously selected out using a fan or nasosa.Nagrety air or water use.