Oh, No! The Dryer Broke!

Overview

Objectives/Goals My project was to see which would evaporate water faster, wind or radiant heat. I believe that the wind will evaporate water faster because the wind blows the water molecules apart. It also blows the humid air away. The heat just speeds the water molecules up. Methods/Materials I used a weather station with an anemometer to measure the wind speed of a fan. I used a thermometer to measure the heat of a radiant heater. I used three different speeds (4mph, 6.4kph), (7mph, 11.3kph), (9mph, 14.5kph) and temperatures (80F, 26.7C), (90F, 32.2C), (100F, 37.8C). I wet sponges with an equal amount of water and measured how long it took to dry them out. I also had a control that was seperate from the wind and heat. Results On the two lower speeds and temperatures the fan evaporated the water faster. On the third trial, when the temperature was at 100F(37.8C), the heater dryed the sponge faster, but not by much. Conclusions/Discussion My conclusion is that wind without heat will dry things quicker than mild heat alone. My hypothesis was correct. Best bet for evaporation is a combination of wind and heat. (My dryer!!)

Competition history

• CSEF 2013 Physics & Astronomy · Entry J1802

Resources

• CSEF project summary ↗

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