What to do if a solar still doesn’t produce enough water?

Improving Still Efficiency

To increase the efficiency of a solar still, ensure it’s built with a shallow collection container and a wide, shallow evaporation surface. This design allows for better heat transfer from the sun and minimizes water loss through evaporation. For example, a still with a 1-inch deep collection container and a 4-foot by 4-foot evaporation surface can produce up to 2 cups of water per hour in optimal conditions.

Maximizing Collection Surface

A solar still’s collection surface area can greatly impact its productivity. To maximize this area, use a still with a collection container that’s at least 50% of the evaporation surface. Additionally, consider using a still with a built-in collection tray or a separate collection container with a small footprint. This setup allows for a more efficient collection of condensed water vapor.

Alternative Water Collection Methods

If a solar still isn’t producing enough water, consider implementing alternative methods to collect water. One option is to collect dew using a piece of cloth or a plastic bag. Simply hang the cloth or bag in a shaded area, and in the morning, collect the dew that’s accumulated on its surface. Another option is to use a transpiration method, such as collecting water from plants, by placing a collection container under a plant and weighing it down with a rock.