Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 31 for “"exergy analysis"”.
-
Exergy analysis of a Stirling cycle
In this dissertation the analysis of the Stirling engine is presented, this research topic falls within the category of thermal energy conversion. The research that was conducted is presented in three chapters of which the topics are: the effects of allocation of volume on engine performance, the …
-
Exergy Analysis of Pulverized Coal-Fired Ultra Supercritical Power Plants
… particulate matter, like CO2, to the atmosphere. Analysis of the power generation systems is an expansive concept involving the efficient use of the energy resources. In the present scenario, it is important to focus on the stability of the power generation process. A study performed to analyze …
-
Energy ans exergy analysis of biomass co-firing in pulverized coal power generation
… the near future. In the present work, energy and exergy analyses are carried out for a co-firing based power generation system to investigate the impacts of biomass cofiring on system performance and gaseous emissions of CO2, NOx, and SOx. The power generation system considered is a typical …
-
A Study of Morphing Wing Effectiveness in Fighter Aircraft using Exergy Analysis and Global Optimization Techniques
… results of the application of energy- and exergy-based methods to the integrated synthesis/design of an Air-to-Air Fighter (AAF) aircraft with and without wing-morphing capability. In particular, a morphing-wing AAF is compared to a traditional fixed-wing AAF by applying large-scale …
-
Novel configuration of a hybrid sustainable water desalination system (RO-HDH) power by solar energy. Modeling and exergy analysis
La falta de acceso al agua potable es un problema en muchas regiones del planeta. Existe una creciente crisis en todo el mundo debido al rápido agotamiento de las fuentes de agua dulce, incluidos los ríos y las aguas subterráneas. A medida que crezca la población mundial, mejore el nivel de vida de …
-
A detailed study of desalination exergy models and their application to a semi-conductor ultra-pure water plant
… focus in terms of energy consumption mitigation. Exergy analysis is perhaps the most powerful tool available in the search for industrial energy efficiency. The objective of this research was to develop an approach for the exergy analysis of Semiconductor UPW plants in an effort to characterise …
-
Resource Efficiency in the Chemical Industry
… these approaches are often pursued separately. Exergy analysis is a powerful assessment tool that can combine material and energy efficiency approaches into one, while also accounting for resource quality as well as quantity. This thesis investigates how exergy analysis can be applied in …
-
Exergetic Analysis Of Hydrogen Combustion Involving Electronically Excited Species
… reaction mechanisms and chemical kinetics. Exergy analysis of combustion devices focuses on combustion irreversibility, including mixing, internal heat transfer, and oxidation. This novel research project merges these two branches of research.</p> <p> The focus of this work is the …
-
Improving seawater desalination and seawater desalination brine management
… least work of desalination and seawater flow exergy analysis have been developed.
-
Environmental impact of various kayak core materials
… an input - output model and performing an exergy analysis. The environmental impact of kayak core material construction on the over impact of kayak construction is nominal. Beyond that, the comparison of core materials results in a qualitative ranking from least to most impact, which is …
-
Assessment of compressed air energy storage system (CAES)
… system, which include the results of the exergy analysis for the components of the system and its performance and related economic issues compared to that of the PHES. The results show that CAES with energy recovery unit can provide roundtrip efficiency close to 71 percent compared to the …
-
Exergy Based SI Engine Model Optimisation. Exergy Based Simulation and Modelling of Bi-fuel SI Engine for Optimisation of Equivalence Ratio and Ignition Time Using Artificial Neural Network (ANN) Emulation and Particle Swarm Optimisation (PSO).
In this thesis, exergy based SI engine model optimisation (EBSIEMO) is studied and evaluated. A four-stroke bi-fuel spark ignition (SI) engine is modelled for optimisation of engine performance based upon exergy analysis. An artificial neural network (ANN) is used as an emulator to speed up the …
-
Thermodynamic analysis of molten carbonate fuel cell systems
This study deals with the thermodynamic analysis of a molten carbonate fuel cell (MCFC) hybrid system to determine its efficiencies, irreversibilities and performance.The analysis includes a performance investigation of a typical molten carbonate fuel cell stack, an industrial MCFC hybrid system, …
-
Thermodynamic anaysis of an integrated photovoltaic system for hydrogen and methanol production
… methanol production is investigated. Energy and exergy analyses of a hydrogen production plant, thermodynamic assessment of methanol synthesis plant, and exergy analysis of the integrated solar based system for hydrogen and methanol production are performed. The analysis of hydrogen production is …
-
A thermodynamics based analysis of exergy destruction in vapor compression cycle systems
… of these components through the use of exergy analysis. Despite many studies varying across different types of refrigerants, different physical components, and different cooling capacities, there has been no effort made to analyze the exergy destruction caused by combinations of the …
-
Mission-Integrated Synthesis/Design Optimization of Aerospace Subsystems under Transient Conditions
… electric aircraft (MEA), this research utilizes exergy analysis and mission-integrated synthesis/design optimization to investigate the potential for improvement in tip-to-tail design/performance. Additionally, this thesis describes the development and integration of higher fidelity transient …
-
Second law analysis and optimization of humidification-dehumidification desalination cycles
… cycles. This thesis applies irreversibility analysis to characterize HD desalination cycles and to identify how to further improve cycles and components. It is shown that minimizing the specific entropy generation of the cycle maximizes the gained output ratio (GOR). It is also shown that …
-
Investigations on Solar Powered Direct Contact Membrane Distillation
… (DCMD) system from the view point of yield and exergy. The insights from exergy analysis are used in a design study, which is used for performance optimization. The first part concludes with a design procedure and design windows for large scale DCMD construction. In the second part of the …
-
Engineering fundamentals of energy efficiency
… are calculated for conversion devices using exergy analysis, and show a 89% potential reduction in energy use. Efforts should be focused on improving the efficiency of, in relative order: biomass burners, refrigeration systems, gas burners and petrol engines. For passive systems, practical …
-
Design And Optimization Of Organic Rankine Cycle For Low Temperature Geothermal Power Plant
… working fluid and the efficiency for the cycle. Exergy analysis of the cycle revealed that the highest exergy destruction occurs in evaporator followed by condenser, turbine and working fluid pump for the base case scenarios.</p> <p>Performance of ORC was studied using twelve working fluids in …
Page 1 of 2