Relevant bibliographies by topics / Exergy efficiency criteria

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Exergy efficiency criteria'

Author: Grafiati
Published: 4 June 2025
Last updated: 1 August 2025

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Journal articles on the topic "Exergy efficiency criteria"

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Shamoushaki, Moein, Mehdi Aliehyaei, and Farhad Taghizadeh-Hesary. "Energy, Exergy, Exergoeconomic, and Exergoenvironmental Assessment of Flash-Binary Geothermal Combined Cooling, Heating and Power Cycle." Energies 14, no. 15 (2021): 4464. http://dx.doi.org/10.3390/en14154464.

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This research presents the energy, exergy, economic, and environmental assessment, and multi-objective optimization of a flash-binary geothermal CCHP cycle. A sensitivity analysis of production well inlet temperature and cooling to power flow ratio on exergetic, economic, and environmental parameters was conducted. Furthermore, the effects of the inflation rate and plant working hours on economic parameters were investigated. Results showed that increasing the production well inlet temperature harms exergy efficiency and exergetic performance criteria and results in a gain in exergo-environmen
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Taslimi Taleghani, Sahar, Mikhail Sorin, and Sébastien Poncet. "Analysis and Optimization of Exergy Flows inside a Transcritical CO2 Ejector for Refrigeration, Air Conditioning and Heat Pump Cycles." Energies 12, no. 9 (2019): 1686. http://dx.doi.org/10.3390/en12091686.

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In this study, the exergy analysis of a CO2 (R744) two-phase ejector was performed using a 1D model for both single and double choking conditions. The impact of the back pressure on the exergy destruction and exergy efficiencies was presented to evaluate the exergy performance under different working conditions. The results of two exergy performance criteria (transiting exergy efficiency and Grassmann exergy efficiency) were compared for three modes of an ejector functioning: Double choking, single choking and at the critical point. The behavior of three thermodynamic metrics: Exergy produced,
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Sejkora, Christoph, Lisa Kühberger, Fabian Radner, Alexander Trattner, and Thomas Kienberger. "Exergy as Criteria for Efficient Energy Systems—A Spatially Resolved Comparison of the Current Exergy Consumption, the Current Useful Exergy Demand and Renewable Exergy Potential." Energies 13, no. 4 (2020): 843. http://dx.doi.org/10.3390/en13040843.

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The energy transition from fossil-based energy sources to renewable energy sources of an industrialized country is a big challenge and needs major systemic changes to the energy supply. Such changes require a holistic view of the energy system, which includes both renewable potentials and consumption. Thereby exergy, which describes the quality of energy, must also be considered. In this work, the determination and analysis of such a holistic view of a country are presented, using Austria as an example. The methodology enables the calculation of the spatially resolved current exergy consumptio
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Le Minh Nhut, Ha Nguyen Minh, and Luan Nguyen Thanh. "The Effective and Exergy Efficiency of Multi-Pass Solar Air Collector with Longitudinal Fins: Analysis and Optimization." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 102, no. 2 (2023): 42–65. http://dx.doi.org/10.37934/arfmts.102.2.4265.

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The present work investigates the exergy and effective efficiency of the multi-pass solar air collector with longitudinal fins by analysis approach and multi-objective optimization. The effect of 0.01-0.02 kg/s air flow rate, 15-35 mm collector depth, 1-3 m collector length, and 24.21-30.67 mm fin pitch was considered. The optimization was analyzed by the Preference Selection Index (PSI) method, with three maximum criteria: thermal efficiency, effective efficiency, and exergy efficiency. Mathematical models were solved by EES software. Results indicated that the multi-pass (TPLF and DPLF) type
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Nataliia, Fialko, Stepanova Alla, Navrodska Raisa, and Shevchuk Svitlana. "Comparative analysis of the exergy efficiency of methods for protecting gas exhaust ducts of boiler plants." Eastern-European Journal of Enterprise Technologies 3, no. 8 (111) (2021): 42–49. https://doi.org/10.15587/1729-4061.2021.234026.

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This paper reports the results of studying the exergy effectiveness of thermal methods for anti-corrosion protection of the gas-draining tracts of boiler plants. These include the method of mixing heated air into flue gases, the method of passing part of the hot gases of the boiler through the bypass chimney, and a flue gas drying method. The research involved the devised comprehensive procedure based on an exergy approach. The dependences of exergy loss E<sub>los</sub>&nbsp;and the heat- exergy criterion &epsilon; on the following parameters of thermal methods have been established: the amoun
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Bou Malham, Zoughaib, Tinoco, and Schuhler. "Hybrid Optimization Methodology (Exergy/Pinch) and Application on a Simple Process." Energies 12, no. 17 (2019): 3324. http://dx.doi.org/10.3390/en12173324.

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In the light of the alarming impending energy scene, energy efficiency and exergy efficiency are unmistakably gathering momentum. Among efficient process design methodologies, literature suggests pinch analysis and exergy analysis as two powerful thermodynamic methods, each showing certain drawbacks, however. In this perspective, this article puts forward a methodology that couples pinch and exergy analysis in a way to surpass their individual limitations in the aim of generating optimal operating conditions and topology for industrial processes. Using new optimizing exergy‐based criteria, exe
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Haroon, Muhammad, Nadeem Ahmed Sheikh, Abubakr Ayub, et al. "Exergetic, Economic and Exergo-Environmental Analysis of Bottoming Power Cycles Operating with CO2-Based Binary Mixture." Energies 13, no. 19 (2020): 5080. http://dx.doi.org/10.3390/en13195080.

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This study focused on investigating the bottoming power cycles operating with CO2-based binary mixture, taking into account exergetic, economic and exergo-environmental impact indices. The main intent is to assess the benefits of employing a CO2-based mixture working fluid in closed Brayton bottoming power cycles in comparison with pure CO2 working fluid. Firstly, selection criteria for the choice of suitable additive compound for CO2-based binary mixture is delineated and the composition of the binary mixture is decided based on required cycle minimum temperature. The decided CO2-C7H8 binary
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Fialko, N., A. Stepanova, R. Navrodskaya, S. Shevchuk, and G. Sbrodova. "Optimization of operating parameters a heat-recovery exchanger of a boiler plant based on the exergy approach." Energy and automation, no. 2(54) (June 22, 2021): 5–16. http://dx.doi.org/10.31548/energiya2021.02.005.

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Abstract. The results of operating parameters optimization of the air-heating heat-recovery exchanger of complex heat recovery system of a gas-fired boiler designed for heating water and blown air are presented. Air heating in this heat-recovery exchanger is realized by deep cooling of the waste exhaust gases, that is, with a change in their moisture content during the heat recovery process. The possibilities of using a complex technique based on the structural-variant method and exergy analysis methods for the optimization of the heat-recovery exchanger are analyzed. The developed structural
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Adeniran, Jamiu Adetayo, Rafiu Olasunkanmi Yusuf, Adeniyi Saheed Aremu, and Temitope Mariam Aareola. "Exergetic analysis and pollutants emission from a rotary kiln system in a major cement manufacturing plant." Energy & Environment 30, no. 4 (2018): 601–16. http://dx.doi.org/10.1177/0958305x18802766.

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The exergy analysis and air pollutants emission estimation from the kiln system of a major cement manufacturing plant located in Nigeria were conducted with a view to improve the level of performance of the production unit and minimize environmental effects. Material balance and exergy analysis were carried out on the system to determine the exergetic efficiency and exergy destruction rate. Pollutants emission was estimated using bottom-up emission factor approach. The physical and chemical exergy output obtained were 9.07×107 and 1.46×08 kJ/h, respectively. The exergy efficiency of the kiln s
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Hasan, Moayed Razoki. "ENTROPY METHOD AS CRITERIA FOR ANALYSIS A STEAM POWER PLANT." Journal of Engineering 15, no. 03 (2009): 4025–40. http://dx.doi.org/10.31026/j.eng.2009.03.15.

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In this paper a theoretical analysis of South Baghdad and Dura power plant is carried out according to second law of thermodynamic depending on entropy (irreversibility coefficient or lost work) method instead of exergy (availability) method. In the used entropy method. The power plant is divided into main blocks ( boiler, turbine, condenser, and feed water heater and pumps ). The irreversibility losses and coefficient for each block are calculated and then the overall irreversibility and thermal efficiency of the plant are calculated. The results of this work are compared with previous result
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Dissertations / Theses on the topic "Exergy efficiency criteria"

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LEONCINI, LORENZO. "Analisi degli scenari energetici europei e sviluppo di un criterio di valutazione exergetica del sistema edificio." Doctoral thesis, 2014. http://hdl.handle.net/2158/869321.

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ITALIANO - La valutazione energetica di un edificio ha lo scopo di quantificare le risorse energetiche impegnate dall’edificio per alimentare i fabbisogni delle utenze, in rapporto a criteri di natura energetica/ambientale/economica. I criteri di valutazione attualmente impiegati sono: energia primaria, emissioni di CO2, costi, energia finale. L’uso di energia a livello di edificio è messo in relazione rispettivamente con le risorse energetiche primarie impegnate, con le emissioni di gas a effetto serra e con gli oneri gestionali. In una visione centrata sulla combinazione tra catena energetic
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Book chapters on the topic "Exergy efficiency criteria"

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Laterre, Antoine, Olivier Dumont, Vincent Lemort, and Francesco Contino. "SYSTEMATIC AND MULTI-CRITERIA OPTIMISATION OF SUBCRITICAL THERMALLY INTEGRATED CARNOT BATTERIES (TI-PTES) IN AN EXTENDED DOMAIN." In Proceedings of the 7th International Seminar on ORC Power System (ORC 2023), 2024th ed. Editorial Universidad de Sevilla, 2024. http://dx.doi.org/10.12795/9788447227457_19.

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Thermally integrated pumped thermal energy storage (TI-PTES) is a flexibility option to recover lowgrade heat (i.e. &lt; 100°C) and to provide overnight storage. Common criteria when optimising such system are the power-to-power efficiency (i.e. electricity recovery), the total exergy efficiency (i.e. combined heat and electricity recovery) and the energy density (i.e. storage size). However, these objectives are generally conflicting and multi-criteria optimisation is therefore required to discuss the trade-offs. Design guidelines have been proposed for some specific case studies but are stil
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Colak, Arife Tugsan Isiacik, Hamid Reza Soltani Motlagh, Gizem Senel, and Cigdem Goksel. "Offshore Wind Turbine Site Selection in the Northern Aegean Sea by Utilizing GIS-Based Maritime Spatial Planning and Exergy Efficiency." In Advances in Environmental Engineering and Green Technologies. IGI Global, 2023. http://dx.doi.org/10.4018/978-1-6684-7303-0.ch005.

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Maritime spatial planning (MSP) is a mechanism of supporting adaptive decision making in response to possible conflicts over offshore wind turbine locations. The main purpose of this study is to determine the location of potential offshore wind turbine sites in the Northern Aegean Sea in Turkey by creating a geographical information systems-based marine spatial planning system for the region. A decision model has been proposed in which GIS and multi-criteria decision-making techniques are used to determine alternative areas. While the analytic hierarchy process (AHP) was utilized to identify v
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Srinivasaraonaik, Banavath, Shishir Sinha, and Lok Pratap Singh. "Phase Change Materials for Renewable Energy Storage Applications." In Energy Storage Devices [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.98914.

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Solar energy is utilizing in diverse thermal storage applications around the world. To store renewable energy, superior thermal properties of advanced materials such as phase change materials are essentially required to enhance maximum utilization of solar energy and for improvement of energy and exergy efficiency of the solar absorbing system. This chapter deals with basics of phase change material which reflects, selection criteria, PCM works, distinguish thermal energy storage system, commercially available PCM, development of PCM thermal properties and durability of PCM. In addition to thi
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Conference papers on the topic "Exergy efficiency criteria"

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Rosen, Marc A. "Impact on Overall Efficiency of Component Efficiency Increases for an Existing Thermal Electrical Generating Station." In ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-33149.

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Most electrical generating utilities are striving to improve the efficiencies of their existing thermal electric generating stations, many of which are old. Exergy methods have been shown to provide meaningful insights that can assist in increasing the efficiency of conventional coal-to-electricity technologies. Here, exergy analysis is used to assess measures for improving the efficiencies of coal-fired electrical generating stations. This scope of the study is limited to minor practical improvements, which can be undertaken with limited effort and cost and are not overly complex. The plant c
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Benčin, Tim, Jurij Avsec, and Urška Novosel. "Energy and Exergy Analysis of a Nuclear Power Plant." In ASME 2022 Power Conference. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/power2022-85619.

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Abstract Nuclear power plant can be a key pillar of a country’s energy supply. In their operation, it is necessary to follow the efficient use of the primary energy source. Using the thermodynamic analysis of energy and exergy flows in a nuclear power plant, we calculated the energy and exergy efficiency. With comparison of final electrical energy and internal energy of nuclear fuel we hand the energy efficiency for chosen power station. This has significant meaning. However, a nuclear power plant is an example of power station, that operates generally on principle of heat transfer. At that ir
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Hodencq, Sacha, Jaume Fitó, François Debray, et al. "Flexible waste heat management and recovery for an electro-intensive industrial process through energy/exergy criteria." In 34th International Conference on Efficiency, Cost, Optimization, Simulation and Environment Impact of Energy Systems. ECOS 2021 Program Organizers, 2022. http://dx.doi.org/10.52202/062738-0075.

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Ray, Tapan K., Pankaj Ekbote, Ranjan Ganguly, and Amitava Gupta. "Second-Law Analysis in a Steam Power Plant for Minimization of Avoidable Exergy Destruction." In ASME 2010 4th International Conference on Energy Sustainability. ASMEDC, 2010. http://dx.doi.org/10.1115/es2010-90144.

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Performance analysis of a 500 MWe steam turbine cycle is performed combining the thermodynamic first and second-law constraints to identify the potential avenues for significant enhancement in efficiency. The efficiency of certain plant components, e.g. condenser, feed water heaters etc., is not readily defined in the gamut of the first law, since their output do not involve any thermodynamic work. Performance criteria for such components are defined in a way which can easily be translated to the overall influence of the cycle input and output, and can be used to assess performances under diff
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Yokoyama, Ryohei, Shinsuke Takeuchi, and Koichi Ito. "Thermoeconomic Analysis and Optimization of a Gas Turbine Cogeneration Unit by a Systems Approach." In ASME Turbo Expo 2005: Power for Land, Sea, and Air. ASMEDC, 2005. http://dx.doi.org/10.1115/gt2005-68392.

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It is important to design and operate energy conversion systems such as gas turbine cogeneration ones optimally from the thermoeconomic viewpoint. However, an energy conversion system has a complex network structure, and it takes much time to create its model for the thermoeconomic analysis and optimization. In this paper, a systems approach is presented for the performance analysis and optimization of mechanical systems with network structures, and it is applied to the thermoeconomic analysis and optimization of a gas turbine cogeneration unit. The system modeling for the performance analysis
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Huang, Jintao, Chen Yue, and Zhenping Feng. "Multi-Objective Optimization and Performance Analysis of BCHP Systems Using Genetic Algorithms." In ASME Turbo Expo 2006: Power for Land, Sea, and Air. ASMEDC, 2006. http://dx.doi.org/10.1115/gt2006-91143.

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The performance assessment criteria of the BCHP (Building Cooling Heating and Power) system include thermodynamic parameters (primary energy rate, exergy efficiency) and economic parameters (economic exergy rate, payback periods) and environmental factors (emission). These criteria are affected by many factors such as the performance of power equipment, unit initial cost, energy demand, primary and second energy price, annual interest rate, operation hours. The scheme with minimum primary energy rate may also have high equipment cost which leads to longer payback periods, so that it is impossi
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McCarty, R., K. P. Hallinan, B. Sanders, and T. Somphone. "Enhancing Thermoelectric Energy Recovery Via Modulations of Source Temperature for Cyclical Heat Loadings." In ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems collocated with the ASME 2005 Heat Transfer Summer Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/ipack2005-73010.

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Very recent thermoelectric (TE) device materials improvements have pushed this technology to the cusp of usefulness in converting waste heat to electricity in a variety of applications — from automotive to aerospace. For applications where the heat loading is cyclical or non-constant, the effect of active control to maintain the source temperature at or near the peak allowable temperature while maximizing the temperature difference across a TE temporally on the overall thermoelectric efficiency is investigated. Efficiencies for constant heat loading applications that are not at near peak allow
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Sadeghi, Ehsan, Hiwa Khaledi, and Mohammad Bagher Ghofrani. "Thermodynamic Analysis of Different Configurations for Microturbine Cycles in Simple and Cogeneration Systems." In ASME Turbo Expo 2006: Power for Land, Sea, and Air. ASMEDC, 2006. http://dx.doi.org/10.1115/gt2006-90237.

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In recent years, the development of distributed power generation has resulted in significant reduction in network losses and transmission costs while it has increased reliability. Microturbine is one of these power generators that has the ability of relatively high power generation in spite of its small volume [1], [2]. In this paper, different layouts for advanced microturbine cycles are analyzed. In order to modify cycle characteristics such as power and efficiency, and reduce exergy destruction, different configurations including intercooler, aftercooler, and heat recovery boiler are separa
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Vogel, Thomas, Philipp Epple, Andreas Hermann, Bettina Willinger, and Antonio Delgado. "CFD Analyses and Design of a Turbocompound System." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-64444.

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In a turbocompound (TC) system a turbocharged engine is coupled with an additional power turbine, which recovers exergy of the exhaust gas after the turbocharger. The gained power is added to the engine power by a gearbox and a hydrodynamic coupling. The benefit of turbocompound is that the efficiency of internal combustion engines is improved substantially.The challenge with turbocompounding is that a high speed turbine is coupled with a slow speed engine. Through the transient requirements in mobile applications the operating points of the engine are variable while the turbo machine is desig
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Wang, Jiangfeng, Yiping Dai, Zhixin Sun, and Shaolin Ma. "Parametric Analysis of a New CCHP System Utilizing Liquefied Natural Gas (LNG)." In ASME Turbo Expo 2010: Power for Land, Sea, and Air. ASMEDC, 2010. http://dx.doi.org/10.1115/gt2010-22319.

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Liquefied natural gas (LNG) contains considerable cold energy because a significant amount of energy is consumed to produce low-temperature LNG. So, finding a good way to utilize the LNG effectively, particularly its cold energy, is an important issue to solve the problem of energy crisis. In the present study, a new CCHP system utilizing liquid natural gas is proposed to provide cooling, heat and electricity output simultaneously to meet user’s different energy requirements. This CCHP system consists of a gas/steam combined cycle and an ejector refrigeration cycle. For cold energy utilization
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