Illustrated in the given diagrams are how solar panels which are used to heat air and water are strutured as well as their use.
Overall, both the solar panel for the air and the water have the same basic structure, while the latter has additional feature to optimize the process.
In terms of the common solar panel, there is a square box with inlet and outlet in two sides. Additionally, there is a transparent top above it to reflect the sun rays.
The solar panel which heats the air remains the same structure with the common one. The inlet on the left hand side of the box is the way that cool air get into the box. The solar rays bright at the transparent top and are tranformed into the heat energy, which is used to heat the cool air. After that, the first cool air is converted into the warm air and go out of the box through the outlet on the right corner of the box.
The solar panel used to heat water also has its basic structure similar to the common one that the cool water gets into the box through the inlet. However, when it gets into the box, there is a water pipe that guides it through the box during the process when the sun rays also transform into the heat energy to heat the water. Finally, the water becomes warmer and gets out through the oulet in the same place with the solar panel used to heat air.