Tag: energy management

 Solar dryer is one of the oldest methods of preserving food for later use.  Foods can  be dried in the sun, in an oven or in a food dehydrator by using the right. So we can dried fruits for longer duration of time.

The basic function of a solar dryer is to heat air to a constant temperature with solar energy hence Solar dryer works on the principle of conversion of solar energy into heat energy.

At night there is no sunlight to produce heat energy so we cannot use solar cookers in night.

The glass cover in a solar dryer creates a greenhouse effect, trapping solar radiation and heat inside to increase the temperature for drying purposes.

We use the black coloured box to absorb more heat as black colour is the best absorber for heat among its all colours.