Investigating the effect of environmental conditions and fuel type on the energy and exergy parameters of a steam power plant

Document Type : Original Article

Authors
Reza Babaei 1
Meysam Mahmoudi 2
Mohsen Kiamansouri 3
Milad Khanchoupan 4
Elham Moghadamnia 5
1 1- PhD, Department of Mechanical Engineering, Tarbiat Modares University, Tehran, Iran.
2 Department of Mechanical Engineering, Velayat University, Iranshahr, Iran
3 Department of Mechanical Engineering, Islamic Azad University, Noushahr, Iran.
4 Departeman of chemical engineering, faculty of engineering, university of urmia, urmia, iran.
5 M.Sc, Department of Technology Management, Science and Research Branch, Islamic Azad University, Tehran, Iran.
10.22034/stme.2025.482810.1083
Abstract
Due to the existence of various gas sources in various regions of the country, the extracted natural gas has different heat value, which has a significant impact on the performance of the power plant. In the current research, the effect of natural gas extracted in various regions of Iran, including Khangiran, Kangan, Pars, Bidboland, Ahvaz and Sarakhs on Ramin Ahvaz steam power plant was investigated. Power plant cycle modeling has been done using EES software and the effect of parameters such as ambient temperature and relative humidity on net power, exergy destruction rate, energy and exergy efficiency has been investigated. The amount of additional air to provide the flame temperature of 2000 °C was calculated between 12 and 17.5% for various regions. Investigating the increase in temperature from 5 to 40 °C showed that the net power output of the power plant decreases to 14 MW and of the exergy destruction rate in the condenser increases to 16 MW. At 25 °C, the maximum exergy destruction rate is related to Bidbland region with 500 MW and the lowest rate is related to Sarakhs region with 370 MW. For low relative humidity, the reduction of energy and exergy efficiency is 4.7% and 4%, respectively, and for saturated humidity, it is 9% and 8.3%, respectively, which it indicates the increasing effect of ambient humidity with increasing temperature.
Keywords
Energy and exergy analysis
steam power plant
natural gas
exergy destruction rate
EES
Dynamic Analysis
Gearbox
Remaining Useful Life Vibration Analysis
Subjects
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Science and Technology in Mechanical Engineering
Volume 3, Issue 2 - Serial Number 5
January 2025
Pages 19-32

  • Receive Date 24 October 2024
  • Revise Date 22 December 2024
  • Accept Date 18 January 2025
  • First Publish Date 18 January 2025
  • Publish Date 18 January 2025