Analysis of Maisotsenko open gas turbine power cycle with a detailed air saturator model

Saghafifar, Mohammad; Gadalla, Mohamed

doi:10.1016/j.apenergy.2015.03.099

Cited by 63 publications

(45 citation statements)

References 26 publications

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“…From Table 4, the optimal ATCR for the SGTR case was higher than the MCTC case. The situation was not the same when the MCTC and SGTR were solely used for power generation, as reported by the previous researchers [7]. This can be explained by comparing the year-round profiles of the monthly-total cost saving ratio (MTCR) of the two CCHP systems shown in Fig.…”

Section: Results Analysismentioning

confidence: 70%

“…To model the PM's, a constant-polytropic efficiency approach was adopted, as detailed in Fong and Lee [8]. The formulation of the air saturator was based on the works of Saghafifar and Gadalla [7], except that both the dew-point and wet-bulb effectiveness were calculated in this study (rather than using specific values). The details of the models of the heat recuperator, the combustion chamber as well as the complete cycle calculation can be found in Fong and Lee [8].…”

Section: System Description and Formulationmentioning

confidence: 99%

“…Prior to the start of system performance evaluation, the model of the MCTC has to be first validated. To achieve this, a reference case [7] from Saghafifar and Gadalla was chosen, and our simulated results based on the present model were compared with the published data. Accordingly, the comparison results are shown in Table 1.…”

Section: Mctc Model Validationmentioning

confidence: 99%

“…The suitable PM's designed for such an operation scale are the gas turbine, steam turbine, or their combined cycles [6]. Among these options, the Maisotsenko combustion turbine cycle (MCTC), which is available as an advanced humidified gas turbine cycle, can offer higher electrical efficiency than the conventional simple gas turbine with recuperator (SGTR) [7]. So far the research on using MCTC as the PM in tri-generation was seldom conducted and reported.…”

Section: Introductionmentioning

confidence: 99%

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System optimization of innovative tri-generation system for distributed power application

2019

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The building sector is one major primary energy consumer and pollutant emission source. In recent years, the building-related research studies on the potential use of Maisotsenko-cycle in energy systems have been increasing in recent years. The growing interest lies in its expanded applications beyond the air-conditioning systems (the main “energy consumers” in buildings) into the prime movers (the key players in power generation). In order to evaluate its application merits in the practical tri-generation system of the urban districts, an extensive computer simulation platform has been developed. Based on a case study, this paper describes the techniques in the mixed use of numerical tools in performing system optimization studies for distributed power application on a university campus site. The practicality of the methodology is demonstrated through a hypothetical tri-generation system primed with Maisotsenko combustion turbine cycle. The findings are very much interesting.

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Section: Results Analysismentioning

confidence: 70%

Section: System Description and Formulationmentioning

confidence: 99%

Section: Mctc Model Validationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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System optimization of innovative tri-generation system for distributed power application

2019

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“…Another important design variable for the MBC configuration is the air saturator degree of humidification (ASDH) . ASDH is the ratio of the desired injected water over the maximum possible water that can be added in the upper section of the air saturator as follows:

Air saturator degree of humidification = \frac{{\dot{m}}_{w_{italicinU}}}{{\dot{m}}_{w_{i {italicnU}_{m}}}} .

…”

Section: Mathematical Formulationmentioning

confidence: 99%

A critical assessment of thermo‐economic analyses of different air bottoming cycles for waste heat recovery

Saghafifar

Gadalla

2018

Int J Energy Res

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Summary Steam turbine cycle's low operating temperature makes it suitable for waste heat recovery applications. Even though conventional combined cycles, ie, topping gas turbine and bottoming steam turbine cycles, are thermodynamically efficient, they are not the most economical alternatives for power generation with capacities less than 50 MWe. A recently proposed alternative is to utilize a bottoming gas turbine cycle in form of an air bottoming cycle. In this study, an overview of air bottoming cycle is presented. Based on the discussed studies, it is decided to further evaluate the merits of water injection in the bottoming cycle air stream by using either a humidifier or an air saturator. Thermo‐economic analysis and optimization are performed to evaluate simple and water injected air bottoming cycles against steam bottoming cycles. Results indicate that conventional combined cycles can achieve the highest thermal efficiency of about 48%. While water injected air bottoming cycle with air saturator is the most cost effective combined cycle configuration and most efficient air bottoming cycle with levelized cost of electricity and energy efficiency of 64.41 US$/MWh and 39%–40%, respectively, followed by the water injected air bottoming cycle with humidifier and simple air bottoming cycle with reported levelized cost of electricity of 65.75 US$/MWh, 66.36 US$/MWh, respectively. Steam bottoming cycle has the highest levelized cost of electricity of 68.88 US$/MWh.

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Maisotsenko Cycle for Heat Recovery in Gas Turbines: A Fundamental Thermodynamic Assessment

Tariq,

Caliskan,

Sheikh

2023

Global Challenges

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This paper reports the Maisotsenko's cycle‐based waste heat recovery system with enhanced humidification to exploit the maximum waste heat recovery potential of the gas turbine. This research uses an integrated methodology coupling thermodynamic balances with heat transfer model of air saturator. The performance of the system is deduced which are assisted with sensitivity analysis indicating the optimal mass flow rate ratio (0.7–0.8) and pressure ratio (4.5–5.0) between the topping and bottoming cycles, and the air saturator split (extraction) ratio (0.5). The net‐work output, energy, and exergy efficiencies of the system are found to be ≈58.39 MW, ≈55.85%, and ≈52.79%, respectively. The maximum exergy destruction ratios are found as 68.2% for the combustion chamber, 16.0% for the topping turbine, 5.7% for topping compressor, 4.9% air saturator. The integration of Maisotsenko's cycle‐based waste heat recovery system with a comprehensive thermodynamic model, as demonstrated in this research, offers valuable insights into enhancing the efficiency, cost‐effectiveness, and environmental impact of gas turbines. By presenting fundamental equations related to thermodynamic balances, this work serves as an invaluable educational resource, equipping future researchers and students with the knowledge and skills needed to advance the study of thermodynamics and sustainable energy solutions.

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Analysis of Maisotsenko open gas turbine power cycle with a detailed air saturator model

Cited by 63 publications

References 26 publications

System optimization of innovative tri-generation system for distributed power application

System optimization of innovative tri-generation system for distributed power application

A critical assessment of thermo‐economic analyses of different air bottoming cycles for waste heat recovery

Maisotsenko Cycle for Heat Recovery in Gas Turbines: A Fundamental Thermodynamic Assessment

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