Cheesecloth could also be used to cover the food. Solar Drying Recent efforts to improve sun drying have led to solar drying. Solar drying uses the sun as the heat source, but a specially designed dehydrator increases the temperature and air current to speed up the drying time. Shorter drying times reduce the risk of food spoilage or molding. Cooler air enters the dryer, crosses the food, removes moisture and escapes.
Plastic covers the frame and prevents rain or condensation from dampening the food.
Screens over the vents keep insects and birds off the food. Solar dryers may need turning or tilting throughout the day to capture the direct, full sun. Food on the shelves needs to be stirred and turned several times a day. There are several models of solar dehydrators. Directions for making them at home can be obtained from your county Extension agent.