scholarly journals TECHNO-ECONOMIC INVESTIGATION OF DIFFERENT ALTERNATIVES OF IMPROVING SIMPLE GAS TURBINE INTEGRATION OPTIONS

2017 ◽  
Vol 36 (3) ◽  
pp. 849-857
Author(s):  
MA Sulaiman ◽  
MA Waheed ◽  
WA Adesope ◽  
A Noike
Keyword(s):  
Gas Turbine ◽  
Exergy Analysis ◽  
Point Of View ◽  
Air Cooling ◽  
Levelized Cost Of Electricity ◽  
Energy And Exergy ◽  
Energy And Exergy Analysis ◽  
Specific Emissions ◽  
Gas Turbine Power Plant ◽  
Wasted Energy

This study investigated the effect of integrating various models proposed to improve a simple gas turbine power plant. A computer program was developed in Matlab software was used to simulate the performance parameters. The energy and exergy analysis of the plant was carried out. The energy and exergy analysis result revealed that both energy and exergy efficiency of plant is low as a result three improvement options were considered. They include Model 1: reducing inlet air cooling (IAC) of the compressor by using the wasted energy in the natural gas pressure drop station. Model 2: recovering wasted energy in the exhaust through heat recovery steam generator (HRSG) and injecting steam into the combustion chamber and lastly Model 3: by combining the two methods. The result showed that among the three methods of improving the plant investigated Model 3 was found to boost power output of the plant from 28.3 MW to 78.4 MW while the thermal and exergetic efficiency improved by 25.5 and 23.6% respectively. Furthermore, from economic and environmental point of view, the lowest levelized cost of electricity as well as the specific emissions was observed in Model 3. Consequently, Model 3 is selected as the best option in improving the simple gas turbine.  http://dx.doi.org/10.4314/njt.v36i3.27

Thermodynamic Evaluation of a 42MW Gas Turbine Power Plant

2014 ◽  
Vol 12 ◽  
pp. 83-94 ◽  
Author(s):  
Henry Egware ◽  
Albert I. Obanor ◽  
Harrison Itoje
Keyword(s):  
Power Plant ◽  
Gas Turbine ◽  
Air Temperature ◽  
Power Plants ◽  
Exergy Analysis ◽  
Ambient Air ◽  
Thermodynamic Evaluation ◽  
Ambient Air Temperature ◽  
Energy And Exergy ◽  
Gas Turbine Power Plant

Energy and exergy analyses were carried out on an active 42MW open cycle gas turbine power plant. Data from the power plant record book were employed in the investigation. The First and Second Laws of Thermodynamics were applied to each component of the gas power plant at ambient air temperature range of 21 - 330C. Results obtained from the analyses show that the energy and exergy efficiencies decrease with increase in ambient air temperature entering the compressor. It was also shown that 66.98% of fuel input and 54.53% of chemical exergy are both lost to the environment as heat from the combustion chamber in the energy and exergy analysis respectively. The energy analysis quantified the efficiency of the plant arising from energy losses , while exergy analysis revealed the magnitude of losses in various components of the plant. Therefore a complete thermodynamic evaluation of gas turbine power plants requires the use of both analytical methods.

scholarly journals Energy and Exergy Analysis of Coupled Cycles Utilizing New Generation Gas Turbines

2020 ◽  
Author(s):  
Chang Cho
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Closed Loop ◽  
Exergy Analysis ◽  
Cooling Process ◽  
Energy And Exergy ◽  
Energy And Exergy Analysis ◽  
Combined Cycles ◽  
New Generation

The potential execution of optimized gas-steam combined cycles built around the latest generation gas turbine motors is analyzed, by implies of energy/exergy equalizations. The options here considered are the warm gas turbine and the H-series with closed-loop steam edge cooling.Recreations of execution were run employing a well-tested Modular Code created at the Office of Vitality Designing of Florence and subsequently improved to incorporate the calculation of exergy pulverization of all sorts (warm transfer, friction, blending, and chemical irreversibilities). The edge cooling process is analyzed in detail because it is recognized to be of capital significance for execution optimization. The distributions of the relative exergy devastation for the two solutions both competent of achieving energy/exergy efficiencies within the extend of 60 percent are compared and the potential for advancement is examined<br>

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