Experimental and theoretical study of a multi-stage solar still connected to evacuated solar collector tubes

الملخص EN

Solar distillation is an effective and a useful method to solve the problem of water scarcity usable on the surface of the earth.

A multi-stage solar still was used, and the performance of it was improved by linking it to (Evacuated Solar Collector Tubes), the rate of increase in productivity is about (38%).

Practical and theoretical calculations were carried out on two cases.

The first case was the basin of the first stage containing water only; the second case was the basin containing the fiber of the palm.

When comparing the two cases there was a similarity between the two cases, but the addition of leaf fiber improved the increase in night productivity.

The rate of increase in night productivity is about (25%).This type of solar still was a modern technology in improving the performance of multi-stage solar still.