The diagrams illustrate the design of a simple solar panel and how it can be used for heating air and water.
Overall, the solar panel is a straightforward device that uses transparent glass to capture sunlight, which in turn heats either air or water passing through it. The system functions with an inlet and an outlet, allowing cool air or water to enter and emerge as warm air or water.
Looking first at the structure, the solar panel consists of a rectangular box with a transparent glass cover on top. This box has two openings, one acting as an inlet and the other as an outlet, through which substances flow in and out. Sunlight penetrates the transparent surface, enabling heat to be absorbed within the box.
In terms of usage, the panel can be employed for heating both air and water. When air enters through the inlet, sunlight warms it as it passes under the glass surface, and it exits as warm air from the outlet. A similar process occurs with water, although in this case, the liquid flows through a pipe system placed inside the box. The sun’s energy heats the water in the pipes, and warm water is released from the outlet.