الفهرس 
chapter 1يوجد فقط 14 صفحة متاحة للعرض العام
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المستخلص
Fogging is an effective cooling system used for gas turbine (GT) inlet air cooling. In this study, three fogging strategies were tested: direct fogging, fogging with a natural gas (NG) heat exchanger (FNGE), and FNGE using a storage tank (FNGET). The dispersed phase model (DPM) with the standard k-ω turbulence model was implemented. A computational parametric study was conducted on a GT compressor inlet duct to optimize the effect of the FNGET cooling strategy. A shell and tube heat exchanger (STHE) with an inlet guide vane (IGV) computational design was executed. The novelty in the STHE design is using star, circular, and horizontal IGV in the tube side (TS) inlet nozzle. The realizable k-ε turbulence model was applied to study the heat exchanger different parameters effects. The STHE validation maximum differences were 6.48% and 3.63% for shell side (SS) and TS outlet temperatures, respectively. The heating process in the reduction station will be replaced with 6 heat exchangers. The enthalpy–entropy approach, which is a rigorous and accurate method, was used to model the actual cycle of a gas turbine (GT). The results of the GT modeling program showed that the maximum (minimum) difference in GT output power (PGT) was 1.12% (0.01%) at a Tam of 39.7°C (23.3°C) compared with the actual output power of El-Atf power station. The star IGV decreased the pressure DROP (ΔP) by a range from 7.33% to 11.98%. The effect of using IGV on the temperature decrease was small. The minimum (maximum) reduction in temperature was 5.54°C (15.77°C), which was observed at 30°C (40°C) ambient dry-bulb temperature (DBT) and 60% (15%) RH. The minimum (maximum) increase in the GT output power was 8.99 MW (26.44 MW), or 3.87% (11.15%), which was under the ambient conditions of 34°C (30°C) and 60% (15%) RH. The maximum enhancement in GT thermal efficiency was 1.47%, which occurred under the ambient conditions of 30°C DBT and 15% RH. The maximum decrease in GT specific fuel consumption (SFC) was 4.30%, which was seen under the ambient conditions of 30°C and 15% RH. FNGET was the most effective cooling strategy in terms of GT output power, thermal efficiency, and SFC.