A Holistic Approach to GTCC Operational Efficiency Improvement Studies

Boksteen, Sowande Z.; Buijtenen, Jos P. van; Vecht, Dick van der

doi:10.1115/gt2014-25900

Cited by 4 publications

(3 citation statements)

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“…Combine‐cycle power plants (CCPPs) have been evaluated by numerous researchers based on energy and exergy concepts . The majority of studies have focused on the effect of working parameters including TIT, compression pressure ratio, ambient temperature, and humidity on the performance of these systems and their components.…”

Section: Three‐e Analyses Of Power Plantsmentioning

confidence: 99%

Thermodynamic and economic analysis of performance evaluation of all the thermal power plants: A review

Ahmadi

Nazari

Sadeghzadeh

et al. 2018

Energy Science & Engineering

104

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Surging in energy demand makes it necessary to improve performance of plant equipment and optimize operation of thermal power plants. Inasmuch as thermal power plants depend on fossil fuels, their optimization can be challenging due to the environmental issues which must be considered. Nowadays, the vast majority of power plants are designed based on energetic performance obtained from first law of thermodynamic. In some cases, energy balance of a system is not appropriate tool to diagnose malfunctions of the system. Exergy analysis is a powerful method for determining the losses existing in a system. Since exergy analysis can evaluate quality of the energy, it enables designers to make intricate thermodynamic systems operates more efficiently. These days, power plant optimization based on economic criteria is a critical problem because of their complex structure. In this study, a comprehensive analysis including energy, exergy, economic (3‐E) analyses, and their applications related to various thermal power plants are reviewed and scrutinized.

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Section: Three‐e Analyses Of Power Plantsmentioning

confidence: 99%

Thermodynamic and economic analysis of performance evaluation of all the thermal power plants: A review

Ahmadi

Nazari

Sadeghzadeh

et al. 2018

Energy Science & Engineering

104

View full text Add to dashboard Cite

show abstract

“…Exergy concept is an appropriate tool to evaluate the performance of energy systems, since it is able to assess the plants based on second law of thermodynamics . By using exergy analysis, it is possible to find exergy destruction in various components of a cycle .…”

Section: Introductionmentioning

confidence: 99%

Exergetic, economic, and environmental analyses of combined cooling and power plants with parabolic solar collector

Javadi

Ahmadi

Khalaji

2019

Env Prog and Sustain Energy

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Due to the necessity of achieving the energy systems with improved efficiency, combined power plants are developing in recent decades. Moreover, employing renewable energy sources in the power generation and heating/cooling purposes is an attractive idea to obtain more environmentally benign energy systems. In the current study, a combined cooling and power (CCP) plant is analyzed based on exergy and economic concepts. Afterward, by adding lithium‐bromide refrigeration cycle and parabolic solar collectors, the plant is investigated. The exergy efficiency, carbon dioxide emission, and cost of generated electricity are evaluated on the basis of SPECO model. The results of the study show that thermal and exergy efficiencies of the CCP plant with the solar collector depend on various parameters and can be affected significantly. The efficiency of the plant after applying lithium‐bromide refrigeration cycle and the solar collector increased from 50.33 to 51.73%, while the exergy efficiency enhanced from 47.48 to 48.22%. In addition, it was concluded that adding the collector and absorption chiller leads to 1.5% reduction in environmental pollutants.

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“…Boksteen et al [15] performed the second law based analysis with steady state thermodynamic model for KA26 gas turbine combined cycle plant to improve its operational efficiency. A concept of exergy was used by I.S.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic modeling and Exergy Analysis of Gas Turbine Cycle for Different Boundary conditions

Pattanayak¹

2015

IJPEDS

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In this study an exergy analysis of 88.71 MW 13D2 gas turbine (GT) topping cycle is carried out. Exergy analysis based on second law was applied to the gas cycle and individual components through a modeling approach. The analysis shows that the highest exergy destruction occurs in the combustion chamber (CC). In addition, the effects of the gas turbine load and performance variations with ambient temperature, compression ratio and turbine inlet temperature (TIT) are investigated to analyse the change in system behavior. The analysis shows that the gas turbine is significantly affected by the ambient temperature and with increase there is decrease in GT power output. The results of the load variation of the gas turbine show that a reduction in gas turbine load results in a decrease in the exergy efficiency of the cycle as well as all the components. The compressor has the largest exergy efficiency of 92.84% compared to the other component of the GT and combustion chamber is the highest source of exergy destruction of 109.89 MW at 100 % load condition. With increase in ambient temperature both exergy destruction rate and exergy efficiency decreases. Keyword:Ambient INTRODUCTIONConcept of exergy analysis involves both laws of thermodynamics (first and second laws) is an analysis technique applied on energy systems to identify and quantify the amount of thermodynamic adversity involved in the processes and or energy systems. This technique is used as a potential tool to evaluate the thermal performance and efficiency of system and components involve in energy process during design as well as in operation phase. By definition exergy is the amount of maximum work potential for an energy system in relation to its environment through reversible processes [1]. Exergy analysis quantitatively detects and evaluates the thermodynamic inefficiencies of the process under consideration [2], [3].In recent years many studies have been performed by researchers to evaluate the performance of combined cycle power plants (CCPPs) and its subsystems based on concept of energy and exergy [4]- [14]. Boksteen et al. [15] performed the second law based analysis with steady state thermodynamic model for KA26 gas turbine combined cycle plant to improve its operational efficiency. A concept of exergy was used by I.S. Ertesvag et al. [16] to investigate the CO 2 capture in a gas turbine plant. Also the study investigates the effects of change in natural gas composition and ambient temperature. Akbari et al. [17] conducted a parametric study with design parameters to evaluate the performance of CCPP using energy and exergy concept. Ali and Ameri [18] evaluate the system performance of gas turbine power plant for different load and ambient temperature based on energy, exergy and exergoeconomic analysis. performed the exergy analysis of a 116 MW gas turbine power plant based on varying TIT. The

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A Holistic Approach to GTCC Operational Efficiency Improvement Studies

Cited by 4 publications

References 0 publications

Thermodynamic and economic analysis of performance evaluation of all the thermal power plants: A review

Thermodynamic and economic analysis of performance evaluation of all the thermal power plants: A review

Exergetic, economic, and environmental analyses of combined cooling and power plants with parabolic solar collector

Thermodynamic modeling and Exergy Analysis of Gas Turbine Cycle for Different Boundary conditions

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