Energy, exergy and exergoeconomic analysis of a steam power plant: A case study
By M. Ameri, Pouria Ahmadi, A. Hamidi. 2009
280 citations recorded by the source corpus.
The objective of this paper is to perform the energy, exergy and exergoeconomic analysis for the Hamedan steam power plant. In the first part of the paper, the exergy destruction and exergy loss of each component of this power plant is estimated. Moreover, the effects of the load variations and ambient temperature are calculated in order to obtain a good insight into this analysis. The exergy efficiencies of the boiler, turbine, pump, heaters and the condenser are estimated at different ambient temperatures. The results show that energy losses have mainly occurred in the condenser where 306.9 MW is lost to the environment while only 67.63 MW has been lost from the boiler. Nevertheless, the irreversibility rate of the boiler is higher than the irreversibility rates of the other components. It is due to the fact that the combustion reaction and its high temperature are the most significant sources of exergy destruction in the boiler system, which can be reduced by preheating the combustion air and reducing the air–fuel ratio. When the ambient temperature is increased from 5 to 24°C, the irreversibility rate of the boiler, turbine, feed water heaters, pumps and the total irreversibility rate of the plant are increased. In addition, as the load varies from 125 to 250 MW (i.e. full load) the exergy efficiency of the boiler and turbine, condenser and heaters are increased due to the fact that the power plant is designed for the full load. In the second part of the paper, the exergoeconomic analysis is done for each component of the power plant in order to calculate the cost of exergy destruction. The results show that the boiler has the highest cost of exergy destruction. In addition, an optimization procedure is developed for that power plant. The results show that by considering the decision variables, the cost of exergy destruction and purchase can be decreased by almost 17.11%. Copyright © 2008 John Wiley & Sons, Ltd.
Subfields: Control and Systems Engineering, Mechanical Engineering, Statistical and Nonlinear Physics
View Paper: https://www.semanticscholar.org/paper/6117c43afe30c8dd4225224be7f77015ecf10362
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Control and Systems Engineering
In Mechanical Engineering
- Ravinder Kumar
- M. Alhuyi Nazari
- Mohammad Hossein Ahmadi
- Pouria Ahmadi
- Mahyar Ghazvini
- Milad Sadeghzadeh
- M. Sharifpur
- J. Meyer
In Statistical and Nonlinear Physics
- Ravinder Kumar
- Pouria Ahmadi
- M. Alhuyi Nazari
- M. Sharifpur
- Fathollah Pourfayaz
- T. Ming
- J. Meyer
- Mahyar Ghazvini
Citations in the corpus
- A critical review on energy, exergy, exergoeconomic and economic (4-E) analysis of thermal power plants (2017, background): “exergy de [63] 10 p p Help engin efficiencie [6] 66 p p The maxim energy in [8] 250 p p p The maxim destructio boiler and”
- Thermodynamic and economic analysis of performance evaluation of all the thermal power plants: A review (2018, background): “[75] 250 ● ● ● The highest amount of energy losses occurred in condenser and boiler respectively.”
- Thermodynamic analysis and thermoeconomic optimization of a dual pressure combined cycle power plant with a supplementary firing unit (2011, background): “Further details of the exergoeconomic analysis, cost balance equations and exergoeconomic factors are in detail discussed elsewhere [4,7,8,14,20].”