Thermal Efficiency Optimization for A Natural-Gas Power Plant

Saziye BALKU

doi:https://doi.org/10.17350/HJSE19030000062

Article Details

Thermal Efficiency Optimization for A Natural-Gas Power Plant

Authors:

Saziye BALKU

Publisher:

Hitit University

Journal:

Hittite Journal of Science and Engineering 2017 Vol.4 Issue 2, pp.151-157

Document Type:

Article

Publication Date:

12/2017

Document Language:

English

Document ID (Org No.):

2000451803

Frequency:

Quarterly

eISSN:

2148-4171

DOI:

https://doi.org/10.17350/HJSE19030000062

Abstract:

 

Energy production from fossil fuels has been regarded as the main source of the climate   change. The reason for that is the oxidation of carbon in fossil fuels to carbon dioxide during combustion and the highest percentage of greenhouse gases in atmosphere belongs to carbon   dioxide. Amongst the fossil fuels natural gas is preferred due to its low emission of greenhouse   gases and having no particulate matter after combustion. While the other fossil fuels emit mainly   carbon dioxide during the combustion process; natural gas emits mostly water together with   carbon dioxide. Around 22 % of the world’s electricity is produced by natural gas and this share   is expected to increase in near future. The power plants operating with natural gas as a gas cycle   consisting of a compressor, a combustion chamber and gas turbine are combined with a vapor   cycle in order to increase the efficiency. A heat recovery steam generator is used to reach this aim   in recent years in generating steam by the heat received from the combustion gases leaving the gas   turbine. It is very important to design and operate such energy conversion systems fired by natural gas in optimal conditions. If the efficiency can be increased, it can be said that the energetic,   economic, and environmental aspects also improve. The modeling and optimization studies for a   combined gas-vapor power plant are studied and the most important parameters which influence   the efficiency are determined. The results indicate that the most effective parameters from the   viewpoint of efficiency are air/fuel ratio, gas/steam ratio and the pressure ratios of the compressor   and, thus, the gas turbine. The thermal efficiency increases by 18.25 % and, in the meantime,   the exergy destroyed decreases by 9.84 % using optimum design parameters determined by the   optimization algorithm proposed.

Article Details

Thermal Efficiency Optimization for A Natural-Gas Power Plant

Authors: Saziye BALKU

Publisher: Hitit University

Journal: Hittite Journal of Science and Engineering 2017 Vol.4 Issue 2, pp.151-157

Document Type: Article

Publication Date: 12/2017

Document Language: English

Document ID (Org No.): 2000451803

Frequency: Quarterly

eISSN: 2148-4171

DOI: https://doi.org/10.17350/HJSE19030000062

Issues

Authors:

Saziye BALKU

Publisher:

Hitit University

Journal:

Hittite Journal of Science and Engineering 2017 Vol.4 Issue 2, pp.151-157

Document Type:

Article

Publication Date:

12/2017

Document Language:

English

Document ID (Org No.):

2000451803

Frequency:

Quarterly

eISSN:

2148-4171

DOI:

https://doi.org/10.17350/HJSE19030000062