Full Text Available
Note: Clicking the button above will open the full text document at the original institutional repository in a new window.
Thermodynamic optimisation of an open - air solar thermal Brayton cycle with fixed temperature constraints
Dissertation (MEng)--University of Pretoria, 2014.
Saved in:
| Other Authors: | |
|---|---|
| Format: | Thesis |
| Language: | English |
| Published: |
University of Pretoria
2015
|
| Subjects: | |
| Tags: |
No Tags, Be the first to tag this record!
|
| _version_ | 1867613571395878912 |
|---|---|
| access_status_str | Open Access |
| author2 | Bello-Ochende, Tunde |
| author_browse | Bello-Ochende, Tunde |
| author_facet | Bello-Ochende, Tunde |
| collection | Thesis |
| dc_rights_str_mv | © 2014 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Dissertation (MEng)--University of Pretoria, 2014. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/43360 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:38:15.902Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2015 |
| publishDateRange | 2015 |
| publishDateSort | 2015 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/43360 Thermodynamic optimisation of an open - air solar thermal Brayton cycle with fixed temperature constraints Bello-Ochende, Tunde eugene.jansen11@gmail.com Jansen, Eugene UCTD Dissertation (MEng)--University of Pretoria, 2014. This project mainly focused on the implementation of the second law of thermodynamics relating to the design of heat-exchanging components in an open-air solar thermal Brayton cycle. These components include one or more regenerators (in the form of cross-flow heat exchangers) and the receiver of the parabolic dish where the system heat was absorbed. The generation of entropy is under close investigation since the generation of entropy goes hand in hand with the destruction of exergy, or available work. This phenomenon is caused by two factors, namely the transfer of heat across a finite temperature difference and also the friction that is caused by the flow of a working fluid in a system consisting of components and ducts. The dimensions of some components were used to optimise the cycles under investigation. Entropy Generation Minimisation (EGM) was employed to optimise the system parameters by considering their influence on the total generation of entropy. Various assumptions and constraints were considered and discussed to aid in the solution process, making it simpler in some cases and more feasible in others. The total entropy generation rate and irreversibilities were determined by considering all of the individual components and ducts of the system, and their respective inlet and outlet conditions such as temperature and pressure. The major system parameters were evaluated as functions of the mass flow rate to allow for proper discussion of the system performance. Ultimately, conclusions and recommendations were made, which state the optimum system to be used in this type of solar application, where the amount of net power output is the main driving factor. lk2014 Mechanical and Aeronautical Engineering MEng Unrestricted 2015-01-19T12:13:34Z 2015-01-19T12:13:34Z 2014/12/12 2014 Dissertation Jansen, E 2014, Thermodynamic optimisation of an open - air solar thermal Brayton cycle with fixed temperature constraints, MEng Dissertation, University of Pretoria, Pretoria, viewed yymmdd <http://hdl.handle.net/2263/43360> M14/9/432 http://hdl.handle.net/2263/43360 en © 2014 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | UCTD Thermodynamic optimisation of an open - air solar thermal Brayton cycle with fixed temperature constraints |
| title | Thermodynamic optimisation of an open - air solar thermal Brayton cycle with fixed temperature constraints |
| title_full | Thermodynamic optimisation of an open - air solar thermal Brayton cycle with fixed temperature constraints |
| title_fullStr | Thermodynamic optimisation of an open - air solar thermal Brayton cycle with fixed temperature constraints |
| title_full_unstemmed | Thermodynamic optimisation of an open - air solar thermal Brayton cycle with fixed temperature constraints |
| title_short | Thermodynamic optimisation of an open - air solar thermal Brayton cycle with fixed temperature constraints |
| title_sort | thermodynamic optimisation of an open air solar thermal brayton cycle with fixed temperature constraints |
| topic | UCTD |
| url | http://hdl.handle.net/2263/43360 |