Full Text Available
Note: Clicking the button above will open the full text document at the original institutional repository in a new window.
A thermo-hydraulic model that represents the current configuration of the SAFARI-1 secondary cooling system
Dissertation (MEng)--University of Pretoria, 2015.
Saved in:
| Other Authors: | |
|---|---|
| Format: | Thesis |
| Language: | English |
| Published: |
University of Pretoria
2018
|
| Subjects: | |
| Tags: |
No Tags, Be the first to tag this record!
|
| _version_ | 1867613729546305536 |
|---|---|
| access_status_str | Open Access |
| author2 | Slabber, Johan F.M. |
| author_browse | Slabber, Johan F.M. |
| author_facet | Slabber, Johan F.M. |
| collection | Thesis |
| dc_rights_str_mv | © 2018 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, 2015. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/66205 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:40:46.593Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| 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:2263/66205 A thermo-hydraulic model that represents the current configuration of the SAFARI-1 secondary cooling system Slabber, Johan F.M. ewan.huisamen@yahoo.com Meyer, Josua P. Huisamen, Ewan UCTD Thermohydraulic model Nuclear One-dimensional modelling Computational fluid dynamics Engineering, built environment and information technology theses SDG-07 Engineering, built environment and information technology theses SDG-09 Engineering, built environment and information technology theses SDG-12 Engineering, built environment and information technology theses SDG-13 Dissertation (MEng)--University of Pretoria, 2015. This document focuses on the procedure and results of creating a thermohydraulic model of the secondary cooling system of the SAFARI-1 research reactor at the Pelindaba facility of the South African Nuclear Energy Corporation (Necsa) to the west of Pretoria, South Africa. The secondary cooling system is an open recirculating cooling system that comprises an array of parallel-coupled heat exchangers between the primary systems and the main heat sink system, which consists of multiple counterflow-induced draught cooling towers. The original construction of the reactor was a turnkey installation, with no theoretical/technical support or verifiability. The design baseline is therefore not available and it is necessary to reverse-engineer a system that could be modelled and characterised. For the nuclear operator, it is essential to be able to make predictions and systematically implement modifications to improve system performance, such as to understand and modify the control system. Another objective is to identify the critical performance areas of the thermohydraulic system or to determine whether the cooling capacity of the secondary system meets the optimum original design characteristics. The approach was to perform a comprehensive one-dimensional modelling of all the available physical components, which was followed by using existing performance data to verify the accuracy and validity of the developed model. Where performance data is not available, separate analysis through computational fluid dynamics (CFD) modelling is performed to generate the required inputs. The results yielded a model that is accurate within 10%. This is acceptable when compared to the variation within the supplied data, generated and assumed alternatives, and when considering the compounding effect of the large amount of interdependent components, each with their own characteristics and associated performance uncertainties. The model pointed to potential problems within the current system, which comprised either an obstruction in a certain component or faulty measuring equipment. Furthermore, it was found that the current spray nozzles in the cooling towers are underutilised. It should be possible to use the current cooling tower arrangement to support a similar second reactor, although slight modifications would be required to ensure that the current system is not operated beyond its current limits. The interdependent nature of two parallel systems and the variability of the conditions that currently exist would require a similar analysis as the current model to determine the viability of using the existing cooling towers for an additional reactor. mi2026 Mechanical and Aeronautical Engineering MEng Unrestricted SDG-07: Affordable and clean energy SDG-09: Industry, innovation and infrastructure SDG-12: Responsible consumption and production SDG-13: Climate action 2018-08-17T09:42:40Z 2018-08-17T09:42:40Z 2005/03/18 2015 Dissertation Huisamen, E 2015, A thermo-hydraulic model that represents the current configuration of the SAFARI-1 secondary cooling system, MEng Dissertation, University of Pretoria, Pretoria, viewed yymmdd <http://hdl.handle.net/2263/66205> A2018 http://hdl.handle.net/2263/66205 en © 2018 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 application/pdf application/pdf University of Pretoria |
| spellingShingle | UCTD Thermohydraulic model Nuclear One-dimensional modelling Computational fluid dynamics Engineering, built environment and information technology theses SDG-07 Engineering, built environment and information technology theses SDG-09 Engineering, built environment and information technology theses SDG-12 Engineering, built environment and information technology theses SDG-13 A thermo-hydraulic model that represents the current configuration of the SAFARI-1 secondary cooling system |
| title | A thermo-hydraulic model that represents the current configuration of the SAFARI-1 secondary cooling system |
| title_full | A thermo-hydraulic model that represents the current configuration of the SAFARI-1 secondary cooling system |
| title_fullStr | A thermo-hydraulic model that represents the current configuration of the SAFARI-1 secondary cooling system |
| title_full_unstemmed | A thermo-hydraulic model that represents the current configuration of the SAFARI-1 secondary cooling system |
| title_short | A thermo-hydraulic model that represents the current configuration of the SAFARI-1 secondary cooling system |
| title_sort | thermo hydraulic model that represents the current configuration of the safari 1 secondary cooling system |
| topic | UCTD Thermohydraulic model Nuclear One-dimensional modelling Computational fluid dynamics Engineering, built environment and information technology theses SDG-07 Engineering, built environment and information technology theses SDG-09 Engineering, built environment and information technology theses SDG-12 Engineering, built environment and information technology theses SDG-13 |
| url | http://hdl.handle.net/2263/66205 |