Quick Answer
Short answer: Creating multiple solar stills increases the overall water yield, allowing you to harvest more water in a shorter period. This can be especially beneficial in situations where water is scarce. With a few simple modifications, you can set up a solar still array for higher capacity.
Designing a Solar Stills Array
When designing a solar stills array, consider the space available, the number of people needing water, and the amount of sunlight the area receives. A general rule of thumb is to have at least one solar still per person, but in situations where water is extremely scarce, two or three stills per person may be necessary. To maximize space, position the stills in a staggered formation, allowing for better sunlight exposure and reduced competition for resources.
Building and Configuring Multiple Stills
To build multiple solar stills, you’ll need to create several shallow containers or holes with a slightly sloping bottom, a collection tray or container, and a clear plastic sheet or lid to act as a solar concentrator. Dig the containers at a depth of about 6-8 inches and a diameter of 12-18 inches, depending on the amount of water needed. Place a small rock or a stick in the center of each container to act as a condensation point. Cover the top with the clear plastic sheet, securing it with rocks or weights, and create a slight slope to direct water to the collection tray.
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