Evaluation of the gas turbine unit in the Kirkuk gas power plant to analyse the energy and exergy using ChemCad simulation

Abstract

The purpose of the study is to evaluate the thermal performance of the gas turbine unit represented by (K3) under actual weather conditions by applying the first and second laws of thermodynamics, the design production of the unit (283.6 MW) at standard conditions (1 bar) and temperature (15) Celsius, which included the analysis of the unit energy and available energy. To find out the weaknesses and losses in the system using the ChemCad simulation for a whole year and knowing the effects of external factors for the performance of the turbine unit (ambient temperature, compression ratio and relative humidity). Overall results showed that the maximum exergy efficiency was obtained in November; it was about 37% when Ta was 19.39°C. The maximum efficiency obtained at Ta equal to 19.39°C, which was around 37.67%. Higher ambient temperature increases specific fuel consumption. The results show that the specific fuel consumption (SFC) for the practical and program calculations increases with the increase in the temperature of the external environment and reached the maximum rate in the practical calculations in September (0.224) at 33.27°C. Thus it economically affects the price of power production. Moreover, the results showed that the combustion chamber occupied the first place for the destruction of available energy, and the results of energy efficiency and available energy were (39.20%) and (30.83%), respectively.

Effect of the Maintenance Strategy on the Performance and Efficiency of the Gas Turbine Unit: A Review

“…Salah et al [43] studied the power and energy available for the gas power station in the town of Kirkuk with a rated capacity (MW 283.6) in order to assess the unit's thermal performance (K3) at the real environmental conditions of the station that included the external relative humidity, compression ratio, and outside temperatures by applying the first and second law of) thermodynamics using ChemCad simulations). The findings demonstrated that the thermal performance of the gas unit degrades as the ambient temperature rises; the unit's energy efficiency peaked at a temperature of 19.39 degrees Celsius (37%), but performance improved as the compression ratio rose.…”

The Impact of Climate on the Efficiency and Performance of the Qayyarah Gas Station

“…The simulation was conducted under the following presumptions: that all cycle processes are constant over time; that atmospheric pressure is the standard pressure of (1.01325 bar), which is the same pressure as the air entering the compressor and exiting the exhaust; and that the temperature of the incoming air is identical to that of the surrounding atmosphere. The introduction of air, fuel, combustion products, and ideal gases, subject to all ideal gas laws, while ignoring the values of the change in kinetic and latent energy at the entry and exit of each station component (compressor, combustion chambers, gas turbine), due to their small value in comparison to the change in enthalpy, adding pressure to the incoming air The pressure of the gases leaving the combustion chamber can be calculated, and it is equal to (0.97 * P2), and the imposition of each component of the cycle, which includes the compressor, combustion chamber, and other components, results in nitrogen coming to the compressor and coming out of it with molar ratios of 79% and oxygen only 21%, assuming a decrease in the pressure of the outputs of the gases leaving the combustion chamber by 2% of the pressure of the air entering it, The turbine and compressor have a mechanical efficiency of 95% [19] [20].…”

An Exergoeconomic Evaluation of an Innovative Polygeneration System Using a Solar-Driven Rankine Cycle Integrated with the Al-Qayyara Gas Turbine Power Plant and the Absorption Refrigeration Cycle

“…Salah et al [13] analyzed the energy and exergy of the Kirkuk gas power plant to study the losses incurred under real operating circumstances.…”