Thermodynamic optimization tools for power tracking in a multistage concentrated solar power Rankine plant
- Nwosu, P. N., Nurick, A., Akinlabi, Esther Titilayo
- Authors: Nwosu, P. N. , Nurick, A. , Akinlabi, Esther Titilayo
- Date: 2016
- Subjects: Thermal efficiency , Thermodynamics analysis , Energy recovery , Solar power plants
- Language: English
- Type: Article
- Identifier: http://hdl.handle.net/10210/217182 , uj:21608 , Citation: Nwosu, P.N., Nurick, A. & Akinlabi, E.T. 2016. Thermodynamic optimization tools for power tracking in a multistage concentrated solar power Rankine plant. DOI: 10.1061/(ASCE)EY.1943-7897.0000367.
- Description: Abstract: The object of the study is to present a method of thermodynamic optimization of power generating plants, in a mode that consolidates and simplifies the analysis of data on heat-work interaction of the plant components. The optimization scheme identifies the technical and process parameters that can improve the thermodynamic performance of the plant with respect to an objective variable, and further, the required thermodynamic measures necessary to improve the operating condition of the plant. Simple but effective tools are used to evaluate the optimal and suboptimal power generating capacities vis-à-vis the fundamental variables—namely, the thermodynamic quantity ratio (TQR) and the power-energy quantity ratio (PQR)—without routing optimization procedures. Beyond the optimal value of the objective variable, the power generation capacity of the plant is affected. The determination of the optimal value of the objective variable can also be approached by computerization; for fixed prescriptions of the boiler, superheater, and turbine parameters, variables such as boiler pressure and temperature can be optimally selected. DOI: 10.1061/(ASCE)EY.1943-7897.0000367. © 2016 American Society of Civil Engineers.
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- Authors: Nwosu, P. N. , Nurick, A. , Akinlabi, Esther Titilayo
- Date: 2016
- Subjects: Thermal efficiency , Thermodynamics analysis , Energy recovery , Solar power plants
- Language: English
- Type: Article
- Identifier: http://hdl.handle.net/10210/217182 , uj:21608 , Citation: Nwosu, P.N., Nurick, A. & Akinlabi, E.T. 2016. Thermodynamic optimization tools for power tracking in a multistage concentrated solar power Rankine plant. DOI: 10.1061/(ASCE)EY.1943-7897.0000367.
- Description: Abstract: The object of the study is to present a method of thermodynamic optimization of power generating plants, in a mode that consolidates and simplifies the analysis of data on heat-work interaction of the plant components. The optimization scheme identifies the technical and process parameters that can improve the thermodynamic performance of the plant with respect to an objective variable, and further, the required thermodynamic measures necessary to improve the operating condition of the plant. Simple but effective tools are used to evaluate the optimal and suboptimal power generating capacities vis-à-vis the fundamental variables—namely, the thermodynamic quantity ratio (TQR) and the power-energy quantity ratio (PQR)—without routing optimization procedures. Beyond the optimal value of the objective variable, the power generation capacity of the plant is affected. The determination of the optimal value of the objective variable can also be approached by computerization; for fixed prescriptions of the boiler, superheater, and turbine parameters, variables such as boiler pressure and temperature can be optimally selected. DOI: 10.1061/(ASCE)EY.1943-7897.0000367. © 2016 American Society of Civil Engineers.
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An experimental and computational investigation of swirl generators in a solar thermal cell
- Authors: Kaymakci, Abdullah
- Date: 2017
- Subjects: Solar power plants , Renewable energy sources - Technological innovations , Photovoltaic power generation
- Language: English
- Type: Masters (Thesis)
- Identifier: http://hdl.handle.net/10210/269643 , uj:28646
- Description: Abstract: Please refer to full text to view abstract. , M.Ing. (Mechanical Engineering)
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- Authors: Kaymakci, Abdullah
- Date: 2017
- Subjects: Solar power plants , Renewable energy sources - Technological innovations , Photovoltaic power generation
- Language: English
- Type: Masters (Thesis)
- Identifier: http://hdl.handle.net/10210/269643 , uj:28646
- Description: Abstract: Please refer to full text to view abstract. , M.Ing. (Mechanical Engineering)
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Calculating the optimum solar panel orientation for Gauteng Province
- Nethwadzi, Lutendo Christopher
- Authors: Nethwadzi, Lutendo Christopher
- Date: 2019
- Subjects: Solar power plants , Solar thermal energy , Photovoltaic power generation , Solar system
- Language: English
- Type: Masters (Thesis)
- Identifier: http://hdl.handle.net/10210/403573 , uj:33825
- Description: Abstract : This thesis presents the calculation of optimum solar panel orientation for Gauteng Province by adapting known sky transparency models to actual irradiance data. Solar irradiance losses in the atmosphere are traditionally quantified by the Linke turbidity factor. This study analyses the global irradiance measured in Gauteng and attempts to reproduce the data in terms of irradiance models, such as Aras et al (2006) model, Tsubo et al (2003) model, Scharmer and Greif (2000) model and the Slob Algorithm (2006) model. Some of these models were adapted for local atmospheric conditions, except for the Aras et al (2006) model and the Scharmer and Greif (2000) model. The irradiance energy yields of a solar panel were mod- elled taking into account orientation, season, time of day, and atmospheric losses. The analysis models the irradiance using the Linke turbidity factor. This considers the estimation of the direct component and the diffuse component, which are then summed with an effort to match the measured irradiance and modelled irradiance yield. The Linke turbidities determined in this manner are then compared with corresponding values given in an online solar irradiance calculation tool called PVGIS... , M.Sc. (Physics)
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- Authors: Nethwadzi, Lutendo Christopher
- Date: 2019
- Subjects: Solar power plants , Solar thermal energy , Photovoltaic power generation , Solar system
- Language: English
- Type: Masters (Thesis)
- Identifier: http://hdl.handle.net/10210/403573 , uj:33825
- Description: Abstract : This thesis presents the calculation of optimum solar panel orientation for Gauteng Province by adapting known sky transparency models to actual irradiance data. Solar irradiance losses in the atmosphere are traditionally quantified by the Linke turbidity factor. This study analyses the global irradiance measured in Gauteng and attempts to reproduce the data in terms of irradiance models, such as Aras et al (2006) model, Tsubo et al (2003) model, Scharmer and Greif (2000) model and the Slob Algorithm (2006) model. Some of these models were adapted for local atmospheric conditions, except for the Aras et al (2006) model and the Scharmer and Greif (2000) model. The irradiance energy yields of a solar panel were mod- elled taking into account orientation, season, time of day, and atmospheric losses. The analysis models the irradiance using the Linke turbidity factor. This considers the estimation of the direct component and the diffuse component, which are then summed with an effort to match the measured irradiance and modelled irradiance yield. The Linke turbidities determined in this manner are then compared with corresponding values given in an online solar irradiance calculation tool called PVGIS... , M.Sc. (Physics)
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