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Mathematical Modelling and Performance Optimization of Gas Turbines and Combined...
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Mathematical Modelling and Performance Optimization of Gas Turbines and Combined Cycle Power Plants

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Energy Science and Technology".

Deadline for manuscript submissions: closed (30 April 2022) | Viewed by 5621

Special Issue Editors

Dr. Marcin Wołowicz

E-Mail Website
Guest Editor
Institute of Heat Engineering, Faculty of Power and Aeronautical Engineering, Warsaw University of Technology, 21/25 Nowowiejska Street, 00-665 Warsaw, Poland
Interests: power engineering; combined heat and power; combined cycle power plant; energy storage; thermal energy storage; mathematical modelling; thermal processes; micro-cogeneration; fuel cells; energy systems
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Krzysztof Badyda

E-Mail Website
Guest Editor
Department of Power Engineering, Institute of Heat Engineering, Faculty of Power and Aeronautical Engineering, Warsaw University of Technology, Warsaw, Poland
Interests: combined cycle power plant; environmental protection; mathematical modelling; thermal processes; gas turbines optimization; steam turbines

Special Issue Information

Dear Colleagues,

Due to the growing demand to reduce emissions of carbon dioxide and other substances into the atmosphere, new methods of effective generation of electricity and heat are continually being sought. Recently, there has been substantial investment in renewable energy sources, but non-renewable sources, connected to national grid units, such as gas turbines, combined cycle power plants and coal-fired power plants still have a large share of electricity production. Combined cycle systems can be treated as highly efficient sources of electricity generation. Modern technologies enable the construction of units with an efficiency of over 62%, which makes them one of the most efficient installations in the energy sector.

There are more and more concepts of cooperation between gas turbines and combined cycle systems with other sources of energy generation, such as fuel cells and renewable sources. Hybrid systems configured in this can possibly achieve even higher efficiencies than those operating separately.

Large-scale energy and heat storage is also a challenge. Combined cycle power plants operate most efficiently when they operate at their nominal power parameters. Notably, the demand for electricity and heat varies over time. Therefore, an in-depth analysis of the cooperation of gas turbines and combined cycle systems with heat and electricity storage is pertinent.

This Special Issue entitled “Mathematical Modelling and Performance Optimization of Gas Turbines and Combined Cycle Power Plants” will present various aspects of the most recent advancements related to gas turbines and combined cycle technology.

Authors are invited to submit papers dealing with all aspects of mathematical modelling of thermal cycles, model validation, analysis of operation and optimization of gas turbines and combined cycles, environmental impact, cooperation of different energy sources with gas turbines and combined cycles (so-called hybrid cycles), energy storage in relation to gas turbines and combined cycles and energy and exergy analysis.

Dr. Marcin Wołowicz
Prof. Dr. Krzysztof Badyda
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Applied Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Mathematical modelling
  • Combined cycles
  • Gas turbines
  • Steam turbines
  • Optimization
  • Performance analysis
  • Hybrid cycles
  • Environmental protection
  • Emission reduction
  • Energy systems
  • High capacity energy storage
  • Combustion
  • Thermal cycles
  • Thermodynamic analysis
  • Energy and exergy analysis

Published Papers (3 papers)

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Research

21 pages, 1537 KiB  
Article
Economic Analysis and Optimal Control Strategy of Micro Gas-Turbine with Batteries and Water Tank: German Case Study
by Daniele Cirigliano, Felix Grimm, Peter Kutne and Manfred Aigner
Appl. Sci. 2022, 12(12), 6069; https://doi.org/10.3390/app12126069 - 15 Jun 2022
Cited by 2 | Viewed by 1214
Abstract
Currently, Micro Gas Turbines (MGTs) are widely used in small buildings, such as offices, hospitals, or households, in which electricity and thermal energy are needed. Their reliability, flexibility, and compactness allow these devices to operate in different regimes to fulfill the power demand. [...] Read more.
Currently, Micro Gas Turbines (MGTs) are widely used in small buildings, such as offices, hospitals, or households, in which electricity and thermal energy are needed. Their reliability, flexibility, and compactness allow these devices to operate in different regimes to fulfill the power demand. The opportunity to operate at partial-load is deeply investigated in this paper. To cope with the fast, unpredictable demand of energy, thermal storage and batteries are most commonly installed. The potential of these two components for the operating cost is also investigated in this paper in order to provide guidelines on their sizing. Moreover, the thermal and electrical energy demands depend on different factors such as building size, weather, day of the week, and location, all modeled in this work; the possibility to buy and feed electricity into the grid adds a further variable to the economic analysis. All these factors were considered in this study and led to the creation of an optimization algorithm, which was able to determine the optimal operating profile of the system for every single scenario. The operational optimization of a micro gas turbine, the MTT Enertwin, is presented. Data from experimental measurements were implemented in the algorithm in order to characterize the system performance. Concerning the input power demands, data for Germany according to the norm VDI 4655 were considered; hence, the results are formally limited to this region. However, considerations of batteries and thermal storage were broadly valid; also, the results can be of international interest in countries with a similar climate and habits. With this study, it is shown that the optimal operational strategy is in the vast majority of cases the full-load, with savings up to 20% with respect to partial-load. Furthermore, batteries between 1.5 and 2 kWh constitute the best compromise between installation costs and savings; the investment can be generally paid off in less than 3 years. Finally, a threshold of 400 L for thermal storage was identified. Full article
(This article belongs to the Special Issue Mathematical Modelling and Performance Optimization of Gas Turbines and Combined Cycle Power Plants)
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29 pages, 15372 KiB  
Article
Exergoeconomic and Environmental Analysis and Multi-Objective Optimization of a New Regenerative Gas Turbine Combined Cycle
by Ali Baghernejad and Amjad Anvari-Moghaddam
Appl. Sci. 2021, 11(23), 11554; https://doi.org/10.3390/app112311554 - 06 Dec 2021
Cited by 8 | Viewed by 2172
Abstract
Combined cycle systems have an important role in power generation. In the present study, three different configurations of combined Brayton and Rankine cycle system are studied from the perspective of energy, exergy, exergoeconomic and environmental perspectives. Results indicate that it depends on the [...] Read more.
Combined cycle systems have an important role in power generation. In the present study, three different configurations of combined Brayton and Rankine cycle system are studied from the perspective of energy, exergy, exergoeconomic and environmental perspectives. Results indicate that it depends on the preferences and criteria of each decision maker to select the best configuration among the three proposed configurations as the final configuration. For the purpose of parametric analysis, the effect of changing various parameters such as compressor pressure ratio, gas turbine inlet temperature on the output work, exergy efficiency, exergy-economic and environmental parameters is studied. In addition, an attempt is made to optimize the performance of combined cycle systems considering three objective functions of exergy efficiency, total cost rate and exergy unit cost of produced electricity. Full article
(This article belongs to the Special Issue Mathematical Modelling and Performance Optimization of Gas Turbines and Combined Cycle Power Plants)
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17 pages, 4885 KiB  
Article
Application of a Two-Stage Steam Jet Injector Unit for Latent Heat Recovery of a Marine Steam Turbine Propulsion Plant
by Szymon Grzesiak and Andrzej Adamkiewicz
Appl. Sci. 2021, 11(12), 5511; https://doi.org/10.3390/app11125511 - 14 Jun 2021
Cited by 1 | Viewed by 1438
Abstract
The paper presents the results of the numerical research of the steam jet injector applications for the regenerative feed water heating systems of marine steam turbine propulsion plants. The analysis shows that the use of a single injector for a single heat exchanger [...] Read more.
The paper presents the results of the numerical research of the steam jet injector applications for the regenerative feed water heating systems of marine steam turbine propulsion plants. The analysis shows that the use of a single injector for a single heat exchanger results in a relative increase in the thermal efficiency of the plant by 0.6–0.9%. The analysis also indicates the legitimacy of the usage of multistage feed water heating systems, which would enable the operating parameters optimization of the injectors. The obtained steam pressure up to the value of 1.8 barA allows for the heating of the feed water up to 110 °C. For higher degrees of feed water heating in the heat exchangers, it is necessary to supply heating steam of higher pressure. Therefore, the usage of two-stage steam jet injector units was considered advisable for the analyses. Full article
(This article belongs to the Special Issue Mathematical Modelling and Performance Optimization of Gas Turbines and Combined Cycle Power Plants)
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