Experimentation
Purpose : to determine optimal placement of air outlet for the fastest drying
We used a leaf blower available in the lab to test how its positioning affects drying efficiency. Specifically, we experimented with different blower positions to determine which setup led to the fastest reduction in the mass of a wet cotton shirt. The initial and final mass of the wet shirt was measured before and after 5 minutes of continuous airflow.
Challenges
- Initially, our experiments were conducted on different days, which led to significant variation in results due to fluctuating humidity levels. To address this, we repeated all trials on the same day and at the same location to ensure consistent environmental conditions.
- Additionally, since the leaf blower was manually operated, it was difficult to maintain a consistent airflow throughout the 5-minute drying period. We solved this by securing the switch with Velcro, allowing for a steady and uniform airspeed during each experiment.
Results
Conclusion
We concluded that directing airflow into the shirt from both the top and bottom was the most effective method for drying it efficiently.