الفهرس 
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Abstract
Vapor compression refrigeration systems are one of the key players to increase global warming and ozone layer depletion, through the consumption of huge amount of fossil fuel and using environmentally harmful refrigerants. There is an urgent need to replace those conventional intensive energy systems by renewable energy powered environmentally benign energy conversion systems for producing cooling effect. Adsorption cooling systems are environmentally benign and can be driven by low-grade heat sources, such as solar energy or waste heat. The poor heat and mass transfer of the adsorbent bed limit the specific power of the cooling machine. And remains a limitation in improving the adsorption refrigeration systems performance. In order to overcome the issue of poor thermal transport in adsorbent bed, several attempts have been made to develop composite adsorbents which integrate parent adsorbent with binder and thermal conductivity enhancer. But, using binding material has negative effect on the porous properties of parent adsorbents. The motivation of this work is to develop high packing density and high thermal conductivity composite using silica gel powder (SGP) without significantly affecting its porous properties. Four types of binders and six types of thermal conductivity enhancing materials are used with different amount to recognize high performance SGP composite for solar powered adsorption cooling applications. Thermo-physical and uptake properties of the studied composites have been considered. Utilizing ideal adsorption cooling cycle, adsorption uptake difference along with the specific cooling capacity (SCE) and coefficient of performance (COP) for three pairs have been investigated and compared for cooling applications. Additionally, a simulation study of a two-bed adsorption cooling system is also considered. Thesis outline The thesis consists of six chapters, which are outlined as following. Chapter (1) Introduces the thesis subject. Chapter (2) Introduces an intensive literature review on physical adsorbentadsorbate pairs for adsorption cooling applications. Employing ideal adsorption cooling cycle, adsorption uptake difference along with the specific cooling capacity of various pairs have been investigated and compared for cooling and refrigeration applications. Chapter (3) Presents a detailed view of the materials, measuring instruments, measuring techniques and experimental procedure used in this work. Chapter (4) Presents the experimental results, discussion and comparison between the performance of the three studied adsorption pairs for solar cooling applications. Chapter (5) Presents the mathematical model and simulation of the adsorption cooling system. The simulation results are also illustrated in this chapter. Chapter (6) Presents the conclusions of the thesis and the expected future Work.