الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
Ambient temperature has an adverse effect on gas turbine performance. This problem could be overcome through air cooling technologies such as evaporative cooling, fogging, mechanical cooling, absorption chillers, and thermal energy storage. Therefore, this thesis aims to evaluate the performance of simple and regenerative gas turbine cycles at dry and wet compression cases. A numerical model was constructed for this purpose then the model was validated for dry cycle conditions with an existing turbine SULZER S3 performance data. An inlet fogging was used to full saturate the inlet air and overspray was used for decreasing the compressor inlet temperature at various ambient temperatures. The study presents the effect of changing the fogging droplet diameter on evaporation and the impact of this effect on nozzles and grid selection for both inlet fogging and overspray systems. The optimum droplet diameter should not exceed 10 micrometer for over spray but for inlet fogging the limet could reach 50 micrometer. The results showed that the inlet fogging and overspray reduce the compressor work up to 12 %. The results also showed that the thermal efficiency was improved with using the inlet fogging and by increasing the overspray rate. The highest thermal efficiency of 44 % was achieved when overspray 3% if recuperation was applied. It can be concluded from this work that the thermal efficiency is increased, specific fuel consumption is reduced significantly and the output power is increased by using the recuperator combined with the wet compression and the overspray.