- Title
- The development of boiler control models for the optimization of boiler efficiency
- Creator
- Kellerman, Andre
- Subject
- Boilers Boiler-making industry
- Subject
- Steam-boilers Mechatronics Power electronics
- Date Issued
- 2016
- Date
- 2016
- Type
- Thesis
- Type
- Masters
- Type
- MEng
- Identifier
- http://hdl.handle.net/10948/48014
- Identifier
- vital:40463
- Description
- With Eskom’s fleet rapidly reaching end of life and maintenance outages becoming more frequent, it has become more critical to be able to determine transient effects of auxiliary losses and system responses due to instabilities. A low mono-nitrogen oxide (low-NOx) burner replacement project has recently been completed at Camden power station in Ermelo. It has thus deemed itself as a perfect candidate for a model which can be used to understand the new systems’ response during transient scenarios. The aim is to develop a boiler control model to be used for simulation of various process conditions and failure scenarios in order to predict the boiler plants’ behaviour and improve its availability. Research was done on common boiler control practices and modelling of boiler control. A theoretical boiler control model was developed based on the Camden power station’s control system specification. The computational model of the boiler control was implemented in Flownex® simulation environment, which was found to be particular useful for modelling industrial applications. A number of simulations with the computational model were performed and the results were compared against the historic plant data showing good correlation. In parallel, a thermo-fluid model of the boiler was developed using Flownex® by a Masters student at the University of Cape Town, which was then integrated with the control model. The combined Flownex model was used for simulation of the following important cases: a mill trip, a Forced Draught fan trip and load changes. The obtained results show good correlation with the real plant data, indicating that the developed computational model can be considered accurate for Camden’s particular type of boiler and its control. Hence, it is envisaged that the developed combined Flownex model can be applied for simulation of the boilers of the Camden power station.
- Format
- xi, 147 leaves
- Format
- Publisher
- Nelson Mandela Metropolitan University
- Publisher
- Faculty of Engineering, the Built Environment and Technology
- Language
- English
- Rights
- Nelson Mandela Metropolitan University
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| Thumbnail | File | Description | Size | Format | |||
|---|---|---|---|---|---|---|---|
| View Details Download | SOURCE1 | M.Eng dissertation Andre Kellerman Final submission.pdf | 7 MB | Adobe Acrobat PDF | View Details Download |