Question

Q 2) what are the principle and working of solar heating devices ?

Answer 1

Solar Heating Principles Solar heating systems perform three basic functions... Collection: Radiant energy from the Sun is captured and converted to solar thermal energy using solar collectors. Storage: The solar thermal energy is stored using thermal mass, water tanks, or rock bins. Distribution: Distribution of the heat can be done with both active solar energy and passive solar energy methods. These three basic principles are used for solar space heating, solar water heating, and solar pool heating systems. Find out more: Solar Heating Solar Electricity Principles Solar electric systems use solar cells to convert the Sun's radiant energy into electricity. This is done using a principle known as the photovoltaic effect. Since a solar cell only generates about 1-2 Watts of power, it is necessary to combine them into solar power panels in order to generate more power. Solar panels are in turn combined to form solar arrays. These solar panels and arrays are the key component of all residential solar energy systems. The other components of the system convert the generated DC electricity into AC electricity so it can be used by the electrical appliances in your home.

Answer 2

advantages--

it is ecnomical costly
it is easily available
it is eco-friendly
it causes no pollution