Browsing Conference Publications by Impact Area "Energy Supply and Demand"

Now showing items 1-14 of 14

Cross-dataset performance evaluation of deep learning distracted driver detection algorithms

Author: Zandamela, Frank ; Ratshidaho, Terence ; Nicolls, F ; Stoltz, George G Date: Nov 2022 Deep learning has gained traction due its supremacy in terms of accuracy and ability to automatically learn features from input data. However, deep learning algorithms can sometimes be flawed due to many factors such as training dataset, ... Read more
Experimental analysis of a zeolite heat storage system

Author: Sheik, Muhammed ; Klein, Peter ; Segakweng, Tshiamo Date: Nov 2021 Solar energy supply does not always match demand and it is therefore necessary to investigate efficient ways of storing thermal energy. Sorption based thermochemical heat storage provides high energy densities as well as an exceptional advantage ... Read more
Impact of measured spectrum variation on solar photovoltaic efficiencies worldwide

Author: Kinsey, GS ; Riedel-Lyngskær, NC ; Miguel, A ; Boyd, M ; Braga, M ; Shou, C ; Cordero, RR ; Duck, BC ; Maweza, Elijah L ; Pratt, Lawrence E Date: Aug 2022 In photovoltaic power ratings, a single solar spectrum, AM1.5, is the de facto standard for record laboratory efficiencies, commercial module specifications, and performance ratios of solar power plants. More detailed energy analysis that ... Read more
Magnetite thermal energy storage for CSP plants

Author: Sheik, Muhammed ; Segakweng, Tshiamo ; Sekhuthe, Karabelo L Date: Nov 2023 The Department of Mineral Resources and Energy estimates that the industrial sector is the largest consumer of energy in South Africa. Approximately 66% of energy end-use in industry is for heat generation during manufacturing. South African ... Read more
Modelling of solar photovoltaic module performance

Author: Mkasi, Hlaluku W ; Lawrence, Pratt ; Ayanna, Manjunath B ; Roro, Kittessa T Date: Nov 2021 The high demand for low carbon energy and rapidly decreasing solar panel prices have led to a surge in solar photovoltaic (PV) plants across the globe, more than at any other time since the industry began. Combined with geographic variations ... Read more
The numerical aerodynamic investigation of swirling inlet flow in a vaporizer tube micro-gas turbine combustor

Author: Meyers, Bronwyn C ; Grobler, Jan-Hendrik ; Snedden, GC Date: Sep 2022 A combustor was designed for a 200N micro-gas turbine for the model aircraft industry using the NREC design method. Multiple designs resulted which varied in terms of annular area split configuration, hole area splits and relative hole ... Read more
Power output predictions of photovoltaic system using machine learning

Author: May, Siyasanga I ; Pratt, Lawrence E ; Roro, Kittessa T ; Bokoro, P Date: Nov 2021 This work focuses on developing prediction models for the power output of multiple PV technologies installed at the outdoor test facility on the Pretoria campus of the Council for Scientific and Industrial Research. Random Forest (RF) and ... Read more
Solar PV inverter characterization in indoor laboratory

Author: Basappa Ayanna, Manjunath ; Pratt, Lawrence E ; Roro, Kittessa T Date: Nov 2021 A commercial 3ph 25 kW inverter is characterised at the Smart Grid Laboratory, CEA-INES in accordance with IEC/EN 61727 and EN50530. The minimum, nominal and maximum power point tracking power conversion efficiency for normalized power levels ... Read more
Spectral analysis using a multi-bin method for photovoltaic sites

Author: Maweza, Elijah L ; Pratt, Lawrence E ; Roro, Kittessa T Date: Nov 2021 The high demand for low carbon energy and rapidly decreasing solar panel prices have led to a surge in solar photovoltaic (PV) plants across the globe, more than at any other time since the industry began. Combined with geographic variations ... Read more
Statistics of utility-scale power generation in South Africa in 2021

Author: Pierce, Warrick T ; Ferreira, Bianca A Date: Apr 2022 Summary of 2021 statistics: Coal still dominates and provides about 80% of electricity generated, record high diesel usage, and renewables (excluding hydro) accounted for 6.7%. Read more
Statistics of utility-scale power generation in South Africa in 2021

Author: Ferreira, Bianca A ; Pierce, Warrick T Date: Apr 2022 This presentation discusses the statistics derived from utility-scale power generation in South Africa in 2021. Read more
Systems based CFD modelling of package steam boilers

Author: Klein, Peter ; Potgieter, M ; Ferreira, Bianca A Date: Aug 2021 Dynamic thermo-fluid models of fire-tube steam boilers can be used to optimise the design and operation of equipment, resulting in possible energy and emissions savings. This work presents the development of a dynamic boiler model of a 4-pass ... Read more
Towards improved solar PV module characterisation: Correlating electroluminescence image defects with I-V curve characteristics using a semantic segmentation based multi-defect detection algorithm

Author: Zandamela, Frank ; Pratt, Lawrence E ; May, Siyasanga I ; Mkasi, Hlaluku W ; Mabeo, Reuben T Date: Nov 2023 There has been significant research on the relationship between current-voltage (I-V) curve characteristics and electroluminescence (EL) module defects. Current methods use EL image pixels to develop features, which are then correlated with ... Read more
Wind speed trend analysis and inter-annual variability in South Africa

Author: Chauke, Mamello D ; Prinsloo, L ; Pratt, Lawrence E ; Roro, Kittessa T Date: Nov 2021 Precise projections of long-term linear wind speed patterns provide a useful predictor of shifts in air circulation. Additionally, they are vital for the planning and financing of sectors such as wind power. Trend analysis and inter-annul ... Read more

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Browsing Conference Publications by Impact Area "Energy Supply and Demand"

Browsing Conference Publications by Impact Area "Energy Supply and Demand"

Browse

All of ResearchSpace

This Collection

Quick Links

Legislation and compliance

General Enquiries

Social Connect