In this video, you’ll learn how to make a Mini Air Cooler (AC) using cardboard, a DC motor, and simple tools. This project is perfect for school science fairs, teaching the concept of evaporative cooling and basic electrical motor use.
Step-by-Step Video Instructions:
1. Build the Frame:
- Cut and glue cardboard pieces to make a rectangular box (open at the front and back).
- Create a compartment inside for the water tank at the bottom.
2. Add the Fan:
- Fix the DC motor to the top of the box facing outward.
- Attach the fan blade to the motor shaft.
- Cut out a circular hole in the front for airflow.
3. Make Cooling Pad Section:
- Use tissue paper or sponge as the cooling pad.
- Place it in a holder behind the fan.
- Cut slits in the sides of the box and add mesh or small holes for air intake.
4. Add Water Tank:
- Place a small container or bottle with ice/cold water below the cooling pad.
- Let the sponge or tissue absorb the water from the container.
5. Wiring:
- Connect the DC motor to a 9V battery using wires.
- Optionally, add a switch in between for easy ON/OFF.
6. Test It!
- Switch ON the motor.
- The fan pulls air through the wet sponge, pushing out cool air—just like a mini air cooler!
This model uses the principle of evaporative cooling. Air passes through the wet sponge or tissue, evaporates water, and comes out cooler. It simulates how real air coolers work using water and airflow.