Table 1 - uploaded by Hassan Athari
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The objective of this paper is to assist efforts to improve the power
plant performance by utilising fogging for inlet cooling of gas turbine cycles
and steam injection method through what is known as the FSTIG (gas-turbine
cycle with steam injection and simultaneous fog cooling) cycle. The results
show that a gas-turbine cycle with steam injection...
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Citations
... La mayoría de los trabajos consultados están dedicados a climas áridos, desérticos lo que condiciona los métodos de enfriamiento del aire de entrada como los evaluados en [7,8]. La no existencia de una información completa acerca de la influencia de la temperatura del aire en los parámetros de operación de las turbinas de gas enla zona subtropical costera dificulta la toma de decisiones adecuadas durante su operación, así como de las medidas de mejoras a ese fenómeno. ...
In this work, the influence of ambient temperature in gas turbines in a coastal subtropical zone was studied, both under design conditions and after years of operation. Statistical methods, direct observation, and expert judgment were used during the study. The fundamental parameters of this machine were statistically processed and compared, depending on the variation of the ambient temperature, plotting their influence before and after maintenance, and with their original behavior. It was found that the high temperature produces a decrease in power of about 2.5 MW. As a possible solution, the cooling of the inlet air was evaluated by different methods, selecting the absorption cooling method, which has a positive impact on the environment, although the size of this equipment is disadvantageous. The economic convenience was verified by the cash flow method, resulting in 6 years of recovery.
... The specific exergy e can be written as the sum of specific physical exergy and specific chemical exergy [32][33][34]: ...
... In recent years, numerous and extensive researches have been conducted to evaluate thermal power systems from both energy and exergy analyses point of view (Bilgen, 2000;Ray et al., 2007;Khaldi and Adouane, 2011;Chen et al., 2014;Soltani et al., 2015;Martin et al., 2016;Ganapathy et al., 2009;Egware and Obanor, 2013b;Ahmadi et al., 2011). Table 1 shows the brief summary of studies on proportion of exergy destruction in various components of thermal plant by different authors and year of study. ...
... In this regard, they could achieve nearly 70% improvement in net power output. Also, the fogging technique of inlet air cooling was used with a steam injected gas turbine in research of Athari et al. [15,16]. They considered both natural gas and gasified biomass fuels and compared the cycle performance from energy, exergy and exergoeconimic points of view. ...
... -Methane is used as the fuel in the combustion chamber and its lower heating value (LHV) and chemical exergy are taken to be 802,361 kJ/kmol (50,010 kJ/kg) and 824,348 kJ/kmol (51,521.8 kJ/ kg), respectively [16]. Also, the fuel temperature and pressure are taken to be the ambient temperature and combustion chamber pressure, respectively. ...
... In the combustion chamber, the efficiency and pressure drop are considered to be 99% and 5%, respectively [14]. -The efficiency of the HRSG is taken to be 96%, while the pinch point and the terminal temperature differences are considered to be 20 C and 50 C, respectively [16,34]. ...
