The experiment will consist of four runs, each testing a different combination of one of two fan and heat settings.

1. Tray Dryer Operation

1. Prepare the slurry by mixing 500 g of sand and 150 mL of water and load into the experimental tray for the unit. Spread the mixture evenly in the tray.
2. With the main unit off, place the tray in the drying chamber.
3. Turn on the main unit, then turn on the blower and heater.
4. Set the air velocity and temperature for each run. The three air velocities should range from 0.8 ft/s to 2.0 ft/s (one high, medium, and low) with a constant temperature around 195 ºF. The three temperatures should range from 130 - 200 ºF with a constant air velocity of 1.8 ft/s.
5. Take measurements every 5 min over the entire run, which should last 45 min. The data collected should include inlet air temperature, sand temperature, sand weight, outlet air temperature, outlet air flow rate, dry bulb temperature, and wet bulb temperature. Use the digital thermometers for temperature readings, air flow settings for the air flow, a digital scale for sand weight and a sling psychrometer for the wet and dry bulb temperatures.
6. Repeat the process for each set of settings, totaling four unique runs.