Thermoeconomic optimization of triple pressure heat recovery steam generator operating parameters for combined cycle plants
Abstract
The aim of this work is to develop a method for optimization of operating parameters of a triple pressure heat recovery steam generator. Two types of optimization: (a) thermodynamic and (b) thermoeconomic were performed. The purpose of the thermodynamic optimization is to maximize the efficiency of the plant. The selected objective for this purpose is minimization of the exergy destruction in the heat recovet)/steam generator. The purpose of the thermoeconomic optimization is to decrease the production cost of electricity. Here, the total annual cost of heat recovery steam generator, defined as a sum of annual values of the capital costs and the cost of the exergy destruction, is selected as the objective function. The optimal values of the most influencing variables are obtained by minimizing the objective function while satisfying a group of constraints. The optimization algorithm is developed and tested on a case of combined cycle gas turbine plant with complex configuration. Six op...erating parameters were subject of optimization: pressures and pinch point temperatures of every three (high, intermediate, and low pressure) steam stream. The influence of these variables on the objective function and production cost are investigated in detail. The differences between results of thermodynamic and the thermoeconomic optimization are discussed.
Keywords:
thermoeconomic optimization / heat recovery steam generator / exergySource:
Thermal Science, 2015, 19, 2, 447-460Publisher:
- Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
DOI: 10.2298/TSCI131124040M
ISSN: 0354-9836
WoS: 000355777100009
Scopus: 2-s2.0-84932187162
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Institution/Community
Mašinski fakultetTY - JOUR AU - Mohammed, Mohammed S. AU - Petrović, Milan PY - 2015 UR - https://machinery.mas.bg.ac.rs/handle/123456789/2107 AB - The aim of this work is to develop a method for optimization of operating parameters of a triple pressure heat recovery steam generator. Two types of optimization: (a) thermodynamic and (b) thermoeconomic were performed. The purpose of the thermodynamic optimization is to maximize the efficiency of the plant. The selected objective for this purpose is minimization of the exergy destruction in the heat recovet)/steam generator. The purpose of the thermoeconomic optimization is to decrease the production cost of electricity. Here, the total annual cost of heat recovery steam generator, defined as a sum of annual values of the capital costs and the cost of the exergy destruction, is selected as the objective function. The optimal values of the most influencing variables are obtained by minimizing the objective function while satisfying a group of constraints. The optimization algorithm is developed and tested on a case of combined cycle gas turbine plant with complex configuration. Six operating parameters were subject of optimization: pressures and pinch point temperatures of every three (high, intermediate, and low pressure) steam stream. The influence of these variables on the objective function and production cost are investigated in detail. The differences between results of thermodynamic and the thermoeconomic optimization are discussed. PB - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd T2 - Thermal Science T1 - Thermoeconomic optimization of triple pressure heat recovery steam generator operating parameters for combined cycle plants EP - 460 IS - 2 SP - 447 VL - 19 DO - 10.2298/TSCI131124040M ER -
@article{ author = "Mohammed, Mohammed S. and Petrović, Milan", year = "2015", abstract = "The aim of this work is to develop a method for optimization of operating parameters of a triple pressure heat recovery steam generator. Two types of optimization: (a) thermodynamic and (b) thermoeconomic were performed. The purpose of the thermodynamic optimization is to maximize the efficiency of the plant. The selected objective for this purpose is minimization of the exergy destruction in the heat recovet)/steam generator. The purpose of the thermoeconomic optimization is to decrease the production cost of electricity. Here, the total annual cost of heat recovery steam generator, defined as a sum of annual values of the capital costs and the cost of the exergy destruction, is selected as the objective function. The optimal values of the most influencing variables are obtained by minimizing the objective function while satisfying a group of constraints. The optimization algorithm is developed and tested on a case of combined cycle gas turbine plant with complex configuration. Six operating parameters were subject of optimization: pressures and pinch point temperatures of every three (high, intermediate, and low pressure) steam stream. The influence of these variables on the objective function and production cost are investigated in detail. The differences between results of thermodynamic and the thermoeconomic optimization are discussed.", publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd", journal = "Thermal Science", title = "Thermoeconomic optimization of triple pressure heat recovery steam generator operating parameters for combined cycle plants", pages = "460-447", number = "2", volume = "19", doi = "10.2298/TSCI131124040M" }
Mohammed, M. S.,& Petrović, M.. (2015). Thermoeconomic optimization of triple pressure heat recovery steam generator operating parameters for combined cycle plants. in Thermal Science Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd., 19(2), 447-460. https://doi.org/10.2298/TSCI131124040M
Mohammed MS, Petrović M. Thermoeconomic optimization of triple pressure heat recovery steam generator operating parameters for combined cycle plants. in Thermal Science. 2015;19(2):447-460. doi:10.2298/TSCI131124040M .
Mohammed, Mohammed S., Petrović, Milan, "Thermoeconomic optimization of triple pressure heat recovery steam generator operating parameters for combined cycle plants" in Thermal Science, 19, no. 2 (2015):447-460, https://doi.org/10.2298/TSCI131124040M . .