الفهرس 
Chapter 1 : IntroductionOnly 14 pages are availabe for public view
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Abstract
The present thesis aims at studying some methods for enhancing the performance of solar desalination units by different effects. First: using solar water heater, SWH, to preheat the inlet water to the solar still. Different measurements are made and the hourly productivity of the still is recorded together with other parameters. The second effect was by using different metals as energy storage materials.
The conclusion of the study could be summarized as follows:
- The productivity of the still is enhanced by increasing inlet water temperature. An increase of 31.22%, 31.69% and 44.54% for 7/5, 8/5 and 9/5/2017, respectively was accomplished in still productivity as a result of integrating the solar still to a SWH. Different percentages were obtained for different solar intensities for these three days.
- The effect of integrating a SWH becomes pronounced at higher SI, e,g, at solar noon.
- The order of magnitude of percentage increase in still productivity comes in the same order of average SI at solar noon; 68.57%, 35% and 47.5% increase in productivity for average SI of 661.5, 639 and 649 w/m2, respectively.
- The effect of the various metals and various shapes of a metal on productivity is in the order : CF > IS > IF, with the still integrated to a SWH just a little better than that with IF.