الفهرس 
Chapter 1: IntroductionOnly 14 pages are availabe for public view
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Abstract
nt s ~.j s h:i.’,11 I) DO. 9 Jl’{9f3b3 13nd o. 97 JOO~514 were computE fl’orn tV/o:::re Tie:J of expo rimon t:J when [I 100 Cd :Jca de
of tie floQtin~ oLDorber.
3) A cascade still with as low as 100 angle of the
transparent cover was efficient than the one whose transp,Hent cover WaD inclined at 28° ( the latitude of our place), even if the latter h’ld (; Df ...• Clllower wat), depth.
4) Studying the 10° co Dcade thermal be havioux wi t hand ’
without the floatinr, absorber showed that :-
a) Upper trays meon temperature is always hieher
ace temperature was higher and equalled tbat of the water under the absorber before sunset. The