Designing a system that cools your room and heats water for bathing using solar energy is an excellent way to reduce your carbon footprint and save money on energy bills. Here are some steps to help you design a system that meets your needs:

Step 1: Evaluate Your Rooftop Space

The first step in designing your system is to evaluate your rooftop space. You will need to ensure that your roof has enough space to accommodate a water tank and a solar panel. The solar panel should be positioned in a way that it receives maximum sunlight, ideally facing south.

Step 2: Choose a Water Tank

The next step is to choose a water tank that will be used to store the water for your bath. It is essential to select a tank that can hold enough water to meet your daily bathing needs. You may also need to consider the size of the tank that can fit on your rooftop space.

Step 3: Install a Solar Collector

The solar collector will be responsible for heating the water that is stored in the tank. You can either purchase a pre-made solar collector or design your own. If you decide to design your own solar collector, you will need to ensure that it is positioned correctly to maximize sunlight exposure.

Step 4: Install a Pump and a Filter

You will need to install a pump and a filter to circulate the water from the tank to the solar collector and back. The pump will ensure that the water is circulating correctly, while the filter will remove any debris from the water.

Step 5: Install a Fan and a Sprinkler System

The final step is to install a fan and a sprinkler system to cool your room. You can position the fan near the water tank to blow air over the water, which will help to cool the air. The sprinkler system can be positioned on your rooftop and can be connected to a water source to spray water over the roof, which will cool it down.

In conclusion, designing a system that cools your room and heats water for bathing using solar energy can be an excellent way to reduce your carbon footprint and save money on energy bills. By following these steps, you can design a system that meets your needs and is easy to maintain.