Why use solar greenhouses?
Solar energy from the sun is an excellent form of energy. Often however much of the Sun’s energy is lost back into the atmosphere. Using a greenhouse will help to retain some of the heat energy. In a greenhouse the temperature is able to be raised and held somewhat constant, allowing more success and opportunity for a variety in your garden. How a greenhouse works The Campus Center for Appropriate Technology’s greenhouse works by passive solar heating. As the suns rays pass through a transparent medium such as glass or plastic into a greenhouse, some of the energy becomes trapped and is not allowed to escape to the outside. This has the effect of intensifying the heat in the enclosed space. This trapped heat is the basis for how a greenhouse works. Brick and concrete are used as the floors in the greenhouse because these materials retain heat well. A planter box is constructed from rocks to further add to the heat retention.
