Abstract
The heat lost from gas turbine power plants with exhaust gases represents the most important source for lowering its thermal efficiency. Also, the thermal efficiency of gas turbine can be affected significantly by the ambient surrounding temperature. In Basrah, a lot of gas turbine units have been installed during the last period. In this study, the thermal-economic impact of the heat lost from gas turbine power plant (GTPP) to the atmosphere for different ambient temperature is studied. Heat recovery system is used, the heat recovery system is an absorption refrigeration system used for cooling the air inlet to the gas turbine cycle. For combined system gas turbine-refrigeration cycle, the performance and economic analysis are performed. The results shows that as, the output power and thermal efficiency are decreased by 0.97 MW and 0.0726% respectively for each unit temperature rise of the ambient temperature. The used of the absorption chiller would increase the output power by 23.3%. Also, the thermal efficiency increased by 23.35%.
Highlights
The gas turbine is an internal combustion (IC) engine that uses atmospheric air and combustion gases as a working fluid
The results shows that as, the output power and thermal efficiency are decreased by 0.97 MW and 0.0726% respectively for each unit temperature rise of the ambient temperature
The analysis considered the effect of the ambient temperature for Basrah city for twelve months
Summary
The gas turbine is an internal combustion (IC) engine that uses atmospheric air and combustion gases as a working fluid. Gas turbine heat engines considered one of represents the most appropriate solutions to the problems of power in Iraq, and especially for hottest months in the year (about eight months in Basrah city from March to October). Many gas turbine have been installed in the last few years Most of these power plant have been installed in the southern part of Iraq, in Basrah. To increase the power and efficiency of the gas turbine power plant, there are different methods can be used. The most important one is the use of exhaust gases coming out of the gas turbine for powering the absorption cooling system, which improves the conditions of the air inside the gas power compressor and increases the power of the gas station. Ana and Claudia, 2012, Sahil et al, 2013, Dinindu R., 2014, Badam et al 2016, Robert et al, 2017, and Saleh et al, 2018 explained the effect of intake air temperature on gas turbine performance and the comparison between the available intake air cooling methods and indicated the sub-cooling multistage compressor system coupled with wet cooled condenser and the single-effect LiBr-H2O absorption refrigeration systems show better performance
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