Which 3 conditions are needed for making a solar heating device? Why?
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If it is a solar cooker then these are the three conditions that are needed for making a solar heating device and the reason behind these conditions:-
1. There should be a Concave mirror reflector in the solar heater because it will reflect more and more light and heat of the sun and that will be very helpful in making food speedily.
2. It should be painted black from its outside because black color is the good absorber of heat. So, it is painted black to absorb more and more heat from the sun in the solar heating device and that will help the food cook faster and also from the black surface of the device the heat of the sun cannot go out. This makes the device air tight and the temperature increases inside it gradually.
3. There should be glass sheet fitted on the top of the solar heating device from where the sun light enters the device.
1. There should be a Concave mirror reflector in the solar heater because it will reflect more and more light and heat of the sun and that will be very helpful in making food speedily.
2. It should be painted black from its outside because black color is the good absorber of heat. So, it is painted black to absorb more and more heat from the sun in the solar heating device and that will help the food cook faster and also from the black surface of the device the heat of the sun cannot go out. This makes the device air tight and the temperature increases inside it gradually.
3. There should be glass sheet fitted on the top of the solar heating device from where the sun light enters the device.
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