The diagram illustrates the structure of a solar panel and demonstrates its two main applications: heating air and heating water.
Overall, the solar panel consists of a rectangular box with a transparent glass top. It absorbs solar energy and utilizes it to increase the temperature of either air or water.
In the first step, sunlight passes through the glass cover and enters the box. The absorbed solar energy heats the inside of the panel. When used for air heating, cool air enters through an inlet pipe on one side of the box, warms up inside the panel, and exits as warm air through an outlet on the opposite side.
Similarly, in the case of water heating, a coiled pipe is installed inside the box. Cold water flows into the pipe through an inlet. As sunlight heats the water inside the pipe, its temperature rises. The heated water is then released through the outlet for use.