Effect of Compression Ratio on the Performance of Different Strategies for the Gas Turbine

A clean and safe energy is the greatest challenges in meeting the requirements of green environment. These requirements given way the long time governing authority of steam turbine (ST) in the world power generation, and gas turbine (GT) will replace it. Therefore, it is necessary to predict the characteristics of the GT and optimize its operating strategy by developing a simulation system. Several configurations of the GT plants are proposed by thermal analysis. The integrated model and simulation code for exploiting the performance of GT plant are developed utilizing MATLAB code. The performance code for heavy-duty GT power plants are validated with the Bassily model and the results have been satisfactory. The performance enhancing strategies results show that the higher power output occurs in the intercooler-reheat GT (IHGT) strategy (286 MW). At the compression ratio of 12.4 in the intercooler-regenerative-reheat GT (IRHGT) strategy, the higher (best) thermal efficiency obtained was 50.7 %. While in the IHGT, the lowest thermal efficiency of 22 % to 39.3 % was obtained in the presence of the compression ratio between 3 and 30. Furthermore, the lower fuel consumption (0.14 kg/kWh) occur in the IRHGT strategy. Thus, the compression ratios are strongly influenced on the overall performance of the GT. Keywords: Gas turbine; compression ratio; strategies; performance. INTRODUCTION

[1]  Rosli Abu Bakar,et al.  Influence of Operation Conditions and Ambient Temperature on Performance of Gas Turbine Power Plant , 2011 .

[2]  Simon Harvey,et al.  Analysis of a reheat gas turbine cycle with chemical recuperation using ASPEN , 1997 .

[3]  Thamir K. Ibrahim,et al.  Thermal Analysis of Open-Cycle Regenerator Gas-Turbine Power-Plant , 2010 .

[4]  Ahmed N. Abdalla,et al.  Thermodynamic performance analysis of gas-turbine power-plant , 2011 .

[5]  Brian Elmegaard,et al.  Regenerative Gas Turbines With Divided Expansion , 2004 .

[6]  Mahmudur Rahman,et al.  Parametric study of a two-shaft gas turbine cycle model of power plant , 2012 .

[7]  A. Bassily.  Performance improvements of the recuperated gas turbine cycle using absorption inlet cooling and evaporative aftercooling , 2002 .

[8]  Thamir K. Ibrahim,et al.  Thermal Impact of Operating Conditions on the Performance of a Combined Cycle Gas Turbine , 2012 .

[9]  Thamir K. Ibrahim,et al.  Study on the effective parameter of gas turbine model with intercooled compression process , 2010 .

[10]  Erik Dick,et al.  RAISING CYCLE EFFICIENCY BY INTERCOOLING IN AIR-COOLED GAS TURBINES , 2006 .

[11]  Ahmed N. Abdalla,et al.  Gas Turbine Configuration for Improving the performance of Combined Cycle Power Plant , 2011 .

[12]  Andreas Poullikkas,et al.  An overview of current and future sustainable gas turbine technologies , 2005 .

[13]  Ahmed N. Abdalla,et al.  Improvement of gas turbine performance based on inlet air cooling systems: A technical review , 2011 .

[14]  Minxu Lu,et al.  Effect of welding process on the microstructure and properties of dissimilar weld joints between low alloy steel and duplex stainless steel , 2012, International Journal of Minerals, Metallurgy, and Materials.

[15]  A. M. Bassily.  Performance improvements of the intercooled reheat regenerative gas turbine cycles using indirect evaporative cooling of the inlet air and evaporative cooling of the compressor discharge , 2001 .

[16]  Paul A. Dellenback.  Improved Gas Turbine Efficiency Through Alternative Regenerator Configuration , 2002 .

[17]  Hoseyn Sayyaadi,et al.  Design and optimization of a non-TEMA type tubular recuperative heat exchanger used in a regenerative gas turbine cycle , 2010 .

[18]  Sumeet Sharma,et al.  Optimization of Gas Turbine Cycle Using Optimization Technique , 2010 .

[19]  Mahmudur Rahman,et al.  Parametric Simulation of Triple-Pressure Reheat Combined Cycle: A Case Study , 2012 .