By Stu Campbell
Книга construct your personal sun water heater construct your individual sun water heaterКниги English литература Автор: Stu Campbell Год издания: 1978 Формат: pdf Издат.:Garden method Pub Страниц: 109 Размер: 2,4 ISBN: 0882661299 Язык: Английский0 (голосов: zero) Оценка:Build your individual sun water heater
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Extra resources for Build your own solar water heater
Can they be sheltered from the wind but still be exposed to the sun? Can you build some sort of windscreen to protect your panels? 5 BTU's per hour when the temperature difference between the inside of the panel Figure 39. Snow tends to drift and accumulate in roof valleys, so it's not a good idea to mount solar collectors too close to where two or more roofs join. Study the sunlight patterns on your house at different times of day and at various times of year. Sometimes one part of a house will shade another.
A good silvered-glass mirror or polished metal surface shaped like the inside of a car's sealed beam headlight should reflect about 92% of the light that hits it and shoot it all to one spot. The advantage of any focusing collector is that it can generate tremendous temperature — as high as several thousand degrees — because it intensifies radiation hundreds of times (Figure 18A). But there are serious disadvantages to focusing collectors. First, they must point exactly toward the sun or they won't work at all.
At the bottom of the corrugated sheet there is a gutter to collect the water which has taken heat from the sun. This gutter runs into a pipe, which in turn, transports the water to the storage tank. Variations on the open-water collector include the "series dribble" system (Figure 36), which directs water back and forth across the collector plate, and the Shore system, which runs water between two sheets of blackened corrugated roofing. There is apt to be lots of evaporation from the open-water in a trickier and this can Figure 36.