Families of optimal thermodynamic solutions for combined cycle gas turbine (CCGT) power plants

Godoy, Ezequiel; Scenna, Nicolás J.; Benz, Sonia J.

doi:10.1016/j.applthermaleng.2009.10.022

Cited by 37 publications

(20 citation statements)

References 22 publications

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“…The increase in isentropic compressor efficiency leads to an increase in thermal efficiency. An increase in the power output is obtained because of reduced thermal losses in the compressor, which results in the increase of thermal efficiency (Godoy, Scenna, & Benz, 2010). It is for the HGT that the lower thermal efficiency of 36.8% occurs, whereas the higher thermal efficiency of 52.3% occurs for the RGT.…”

Section: Resultsmentioning

confidence: 96%

Effects of Isentropic Efficiency and Enhancing Strategies on Gas Turbine Performance

K.¹,

Rahman²

2013

J MECH ENG SCI

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Owing to their numerous advantages, gas turbine (GT) power plants have become an important technology for power generation. This paper presents a parametric analysis for different configurations of GT plants, considering the effects of isentropic compressor and turbine efficiency, which allows the selection of the optimum GT configuration for the optimum performance of a GT power plant. The computational model was developed utilizing MATLAB software. The simulated results show that the reheat GT configuration has higher power output, whereas the regenerative GT configuration has higher thermal efficiency, when considering the effects of isentropic compressor and turbine efficiency. The maximum thermal efficiency of 52.4% and the maximum power output of 268 MW are obtained with isentropic turbine efficiency. The result reveals that isentropic compressor and turbine efficiency influence significantly the performance of GTs.

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Section: Resultsmentioning

confidence: 96%

Effects of Isentropic Efficiency and Enhancing Strategies on Gas Turbine Performance

K.¹,

Rahman²

2013

J MECH ENG SCI

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“…According to the aforementioned operational modes, the main relations between different steam turbine parameters were defined and the mathematical model of the CCGT operating at nominal load was built. In order to develop a model and analyse the results, the references [3], [5], [10][11][12][13][14][15][16] were studied and used. The information on water and steam properties was provided by the references [17][18][19].…”

Section: Methodsmentioning

confidence: 99%

Analysis of the Impact of Decreasing District Heating Supply Temperature on Combined Heat and Power Plant Operation

Bolonina

Bolonins

Blumberga

2014

Environmental and Climate Technologies

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-District heating systems are widely used to supply heat to different groups of heat consumers. The district heating system offers great opportunities for combined heat and power production. In this paper decreasing district heating supply temperature is analysed in the context of combined heat and power plant operation. A mathematical model of a CHP plant is developed using both empirical and theoretical equations. The model is used for analysis of modified CHP plant operation modes with reduced district heating supply temperature. Conclusions on the benefits of new operation modes are introduced.Keywords -Combined heat and power optimisation, decreasing supply temperature, district heating.

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“…Here, are the sets of design and operating variables and are the sets of integer variables; while and refer to the equality and inequality constraints which configure the mathematical model of the whole project. A complete description of the NGCC power plant model is presented by Godoy et al (2010Godoy et al ( , 2011. …”

Section: Mathematical Optimization Formulationmentioning

confidence: 99%

Implications of a State-Space Approach for the Economic Optimal Design of a NGCC Power Plant

Godoy¹,

Benz²,

Scenna³

2015

Anais Do XX Congresso Brasileiro De Engenharia Química

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-A detailed state-space approach is here embedded in the optimization model for the economic design of a new natural gas combined cycle (NGCC) power plant. This proposal comprehensively quantifies the impact of different adopted values for two critical parameters: the number of simultaneously and independently failed components, and the number of simultaneous events.The former depicts the maximum number of components (gas turbines, steam turbine, HRSGs, auxiliary services, etc.) that seem feasible to fail because of independent causes at the same time. The latter describes the maximum number of transitions between operating conditions, which is directly linked to the amount of available maintenance resources (personnel, parts, etc).Implications of a wide array of values for these two parameters over the economic optimal solutions are thoroughly discussed, where it is observed that more accurate and detailed estimations of the expected economic performance for the project are attained.

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Families of optimal thermodynamic solutions for combined cycle gas turbine (CCGT) power plants

Cited by 37 publications

References 22 publications

Effects of Isentropic Efficiency and Enhancing Strategies on Gas Turbine Performance

Effects of Isentropic Efficiency and Enhancing Strategies on Gas Turbine Performance

Analysis of the Impact of Decreasing District Heating Supply Temperature on Combined Heat and Power Plant Operation

Implications of a State-Space Approach for the Economic Optimal Design of a NGCC Power Plant

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