Advanced exergoeconomics of a steam power plant based on double-tier splitting of exergy destruction rates

Abstract

The advanced exergy and exergoeconomic analysis methodologies excel over their conventional counterparts by quantifying endogenous/exogenous exergy destruction rates and related costs that reveal the interactions among system components. By quantifying avoidable/unavoidable losses, they also reveal the potentials for component improvements that are practically achievable. These data are imperative for improving the cost-effectiveness of thermal systems. This paper presents the performances of a complex gas-fired power plant obtained via an advanced exergoeconomic analysis. The study advances existing studies by undertaking second-tier splitting of exergy destruction cost rates and associated investment cost rates to determine avoidable endogenous, unavoidable endogenous, avoidable exogenous, and unavoidable exogenous cost rates of the plant’s components. Component exergy destruction cost rates were found to be predominantly unavoidable, while most of the component investment cost rates were avoidable. Except for the low pressure heater 3, exergy destruction cost rates are endogenous in all the plant components, contributing 84% of overall cost rates. The proportions of exergy destruction cost rates and investment cost rates of the plant that are avoidable endogenous were 21% and 28% respectively, while the respective portions that are avoidable exogenous were 4% and 27%. Furthermore, it was shown that as much as 96.3% improvements in overall plant cost-effectiveness were achievable by eliminating avoidable endogenous exergy destruction cost rates and investment cost rates for major components of the plant.

Keywords

Advanced exergy exergoeconomic thermoeconomic analysis advanced thermodynamics steam power plant

Get full access to this article

View all access options for this article.

References

Bejan

Tsatsaronis

Moran

. Thermal design and optimization. 4th ed. NJ: John Wiley and Sons, Inc., 1996.

Kelly

. Energy systems improvement based on endogenous and exogenous exergy destruction. PhD Thesis. Berlin, Germany: Technische Universitát Berlin, 2008.

Tsatsaronis

. Strengths and limitations of exergy analysis. In: Bejan

Mamut

(eds) Thermodynamic optimization of complex energy systems. Dordrecht: Kluwer Academic Publishers, 1999, 199–208.

Vučković

Vukić

Stojiljković

, et al. Splitting the total exergy destruction into endogenous and exogenous parts of the thermal processes in a real industrial plant. FU Mech Eng 2016; 14: 199–208.

Morosuk

Tsatsaronis

. Advanced exergy analysis for chemically reacting systems – Application to a simple open gas-turbine system. Int J of Thermodynamics 2009; 12: 105–111.

Vatani

Mehrpooya

Palizdar

. Advanced exergetic analysis of five natural gas liquefaction processes. Energy Convers Manag 2014; 78: 720–737.

Koroglu

Sogut

. Advanced exergy analysis of an organic Rankine cycle waste heat recovery system of a marine power plant. J. Thermal Eng 2017; 3: 1136–1148.

Morosuk

Tsatsaronis

. A new approach to the exergy analysis of absorption refrigeration machines. Energy 2008; 33: 890–907.

Petrakopoulou

Tsatsaronis

Morosuk

, et al. Advanced exergoeconomic analysis applied to a complex energy conversion system. J Eng Gas Turbine Power 2012; 134: 1–7.

10.

Anvari

Khoshbakhti Saray

Bahlouli

. Conventional and advanced exergetic and exergoeconomic analyses applied to a tri-generation cycle for heat, cold and power production. Energy 2015; 91: 925–939.

11.

Mehrpooya

Ansarinasab

. Advanced exergoeconomic analysis of the multistage mixed refrigerant systems. Energy Convers Manag 2015; 103: 705–716.

12.

Kelly

Tsatsaronis

Morosuk

. Advanced exergetic analysis: approaches for splitting the exergy destruction into endogenous and exogenous parts. Energy 2009; 34: 384–391.

13.

Valero

Torres

. Algebraic thermodynamic analysis of energy systems. Proceedings of Approaches to the Design and Optimization of Thermal Systems Advanced Energy Systems 1988; 7: 13–23.

14.

Tsatsaronis

Morosuk

Kelly

. Approaches for splitting the exergy destruction into endogenous and exogenous parts. In: 5th Workshop on “advances in energy studies”, Porto Venere, Italy, 12–16 September 2006.

15.

Sayadi

Tsatsaronis

Morosuk

. Splitting the dynamic exergy destruction within a building energy system into endogenous and exogenous parts using measured data from the building automation system. Int J Energy Res 2020; 44: 4395–4410.

16.

Tsatsaronis

Morosuk

. Advanced exergy-based methods used to understand and improve energy-conversion systems. Energy 2019; 169: 238–246. DOI: 10.1016/j.energy.2018.11.123.

17.

Penkuhn

Tsatsaronis

. A decomposition method for the evaluation of component interactions in energy conversion systems for application to advanced exergybased analyses. Energy 2017; 133: 388–403.

18.

Galindo

Ruiz

Dolz

, et al. Advanced exergy analysis for a bottoming organic Rankine cycle coupled to an internal combustion engine. Energy Convers Manag 2016; 126: 217–227.

19.

Azizi

Boyaghchi

. Assessment of a real combined cycle power plant with supplementary firing based on advanced exergy/exergoeconomic methods. Iranian J. Mech Eng 2014; 15: 28–57.

20.

Petrakopoulou

Tsatsaronis

Morosuk

, et al. Conventional and advanced exergetic analyses applied to a combined cycle power plant. Energy 2012; 41: 146–152. DOI: 10.1016/j.energy.2011.05.028

21.

Azubuike

Egbuhuzor

Njoku

, et al. Exergy analysis of a steam power plant at full and partial load conditions. Inter J. Exergy 2023; 40: 182–197.

22.

Tsatsaronis

Pisa

. Exergoeconomic evaluation and optimization of energy systems — application to the CGAM problem. Energy 1994; 19: 287–321.

23.

Tsatsaronis

. Application of thermoeconomics to the design and snthesis of energy plants. Energy, Energy Syst Analysis, and Optimization 2007; 2: 160–172.

24.

Kwak

Kim

Jeon

. Exergetic and thermoeconomic analyses of power plants. Energy 2003; 28: 343–360.

25.

Lazzaretto

Tsatsaronis

. SPECO: a systematic and general methodology for calculating efficiencies and costs in thermal systems. Energy 2006; 31: 1257–1289.

26.

Xiong

Zhao

Zhang

, et al. Thermoeconomic operation optimization of a coal-fired power plant. Energy 2012; 42: 486–496.

27.

Ameri

Ahmadi

Hamidi

. Energy, exergy and exergoeconomic analysis of a steam power plant: A case study. Int J Energy Res 2009; 33: 499–512.

28.

Baghernejad

Yaghoubi

. Exergoeconomic analysis and optimization of an integrated solar combined cycle system (ISCCS) using genetic algorithm. Energy Convers Manag 2011; 52: 2193–2203.

29.

Elsafi

. Exergy and exergoeconomic analysis of sustainable direct steam generation solar power plants. Energy Convers Manag 2015; 103: 338–347.

30.

Silveira

Tuna

. Thermoeconomic analysis method for optimization of combined heat and power systems. Part 1. PECS 2003; 29: 476–485.

31.

Petrakopoulou

. Comparative evaluation of power plants with CO₂ capture: thermodynamic, economic and environmental performance. PhD Thesis. Berlin, Germany: Technische Universitát Berlin, 2011.

32.

Brown

. Advanced exergy and exergoeconomic analysis of the major components of a combined cycle power plant. Master’s Thesis. College Station, TX: Texas A&M University, 2015.

33.

Tsatsaronis

Park

. On avoidable and unavoidable exergy destructions and investment costs in thermal systems. Energy Convers Manag 2002; 43: 1259–1270.

34.

Açıkkalp

Aras

Hepbasli

. Advanced exergoeconomic analysis of a trigeneration system using a diesel-gas engine. Appl Thermal Eng 2014; 67: 388–395.

35.

Keçebaş

Hepbasli

. Conventional and advanced exergoeconomic analyses of geothermal district heating systems. Energy and Build 2014; 69: 434–441.

36.

Hepbasli

Keçebaş

. A comparative study on conventional and advanced exergetic analyses of geothermal district heating systems based on actual operational data. Energy and Buildings 2013; 61: 193–201.

37.

Wang

Liu

Tang

, et al. Using the combined gene approach and multiple analytical methods to improve the phylogeny and classification of Bombus (Hymenoptera, Apidae) in China. Zookeys 2020; 1007(1): 1–21.