Optimization of Combustion Process of Boiler at Steam Power Plant based on Heat loss and Blowdown Values: an Energy, Exergy and Environmental Analysis (3E)

Document Type : Original Article

Authors

1 PhD, Department of Mechanical Engineering, Tarbiat Modares University, Tehran, Iran

2 PhD. Student of Science and Engineering, Faculity of Natural Resource,University of Tehran, Karaj, Iran

3 PhD. Student, Science and Research Unit, Faculity of Science and Engineering, Tehran, Iran

4 B.sc of Mechanical Engineering, North Branch, Faculty of Technical Engineering, Tehran, Iran

10.22059/ses.2024.382031.1093

Abstract

The optimization of the amount of fuel consumed (natural gas) entering the combustion chamber done based on controlling the dew point temperature of the exhaust gas considering the amounts of heat loss and blowdown of boiler. The effect of this optimization was investigated on energy, exergy and environmental parameters (3E). The code of governing equations was written by EES software. The results showed that the largest share in the input fuel energy consumption is for the condenser and turbine by 47 and 42%, respectively and the largest share in the exergy destruction rate is for the boiler by 85%. The optimization calculations showed that a 3% reduction in each of the values ​​of radiation/convection and blowdown losses caused a decrease in the adiabatic temperature by 33 °C and a 1.6% reduction in natural gas fuel consumption, as well as a reduction in the values ​​of pollution parameters including NOx, CO, CO2 and the cost of emission by 42%, 8%, 3.2% and 9% respectively.

Keywords

Main Subjects

References

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Journal of sustainable Energy Systems
Volume 3, Issue 4
October 2024
Pages 381-400

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