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 10 of 10 for “"Exergy loss"”.
-
End-of-life analysis of nanotechnology products
… As opposed to the energy analysis result, the exergy analysis showed that the chemical reactions that occur during the reduction and smelting processes are the primary sources of exergy loss. If the smelting temperature is increased to fully melt down nanomaterials with unusually high melting …
-
Design, Testing And Controls For Air Source Heat Pump System In Cold Climates Using Natural & Conventional Refrigerants
… analysis were performed along with comprehensive exergy analysis of the systems. Comparative performances of the R410A and R744 systems were investigated in terms of coefficient of performance (COP), 2<sup>nd</sup> law efficiency and exergy loss with the variation of outdoor temperatures from 32°F …
-
Exergy Analysis of Pulverized Coal-Fired Ultra Supercritical Power Plants
… analysis. This research deals mainly with the exergy analysis of coal-fired power plants operating in ultra supercritical conditions. The main steam conditions used for the model development are 750oC temperature and 35 MPa pressure. The primary objective of this study is to analyze the various …
-
Biocatalytic conversion of cellulose towards itaconic acid
… its high selectivity, mild conditions, and low exergy loss. However, such biocatalytic processes are still seldom applied at the industrial scale since the single conversion steps (pretreatment, hydrolysis, and fermentation) exhibit low efficiencies or high costs. To allow a knowledge-based …
-
Exergy Methods for the Generic Analysis and Optimization of Hypersonic Vehicle Concepts
… presents detailed results of the application of exergy-based methods to highly dynamic, integrated aerospace systems such as hypersonic vehicle concepts. In particular, an exergy-based methodology is compared to a more traditional based measure by applying both to the synthesis/design and …
-
Exergy Methods for the Mission-Level Analysis and Optimization of Generic Hypersonic Vehicles
… and turn mission segments. An exergy approach to the vehicle synthesis/design, in which trade-offs between dissimilar technologies are observed, is proposed and measured against traditional methods of assessing highly integrated systems. A quasi one-dimensional hypersonic …
-
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 …
-
Tools for efficient design of multicomponent separation processes
… search space to be ranklisted in order of the exergy loss occurring within the configuration. Examining these results shows that this objective function favors configurations which move their reboiler and condenser duties to milder temperature exchangers. ^ A graphical interface is presented …
-
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 …
-
A comparative analysis and optimisation of thermo-mechanical energy storage technologies
… performance (e.g., efficiency and unit cost). Loss and cost distributions are given for the representative cases, and the detailed explanation and potential improvement are also provided. After that, thermoeconomic optimizations are carried out for each individual system, and the trade-off …