89 publication(s) trouvée(s)
Article scientifique
Predicting clear-sky global horizontal irradiance at eight locations in South Africa using four models
Solar radiation under clear-sky conditions provides information about the maximum possible magnitude of the solar resource available at a location …
Article scientifique
An assessment of crop residues as potential renewable energy source for cement industry in Malawi
Crop residues have been undervalued as a source of renewable energy to displace coal in the national energy mix for …
Article scientifique
Forecasting medium-term electricity demand in a South African electric power supply system
The paper discusses an application of generalised additive models (GAMs) in predicting medium-term hourly electricity demand using South African data …
Article scientifique
Program-assisted sizing of a photovoltaic-powered water pumping system
Climate change has had perhaps the most adverse effect on African rural communities where we witness persistent droughts and erratic …
Article scientifique
Energy consumption and real GDP: Panel co-integration and causality tests for sub-Saharan African countries
This paper investigates the causal relationship between energy consumption and real GDP in 14 Sub-Saharan African countries over the period …
Article scientifique
Bagasse-based co-generation at Hippo Valley Estates sugar factory in Zimbabwe
The paper reports on the assessment of the use of bagasse for cogeneration purposes at Hippo Valley Estates (HVE), a …
Article scientifique
Measuring the indirect costs associated with the establishment of a wind farm: An application of the contingent valuation method
Although a green energy source, the location of electrical generating wind turbines may cause a disamenity effect (negative externality). The …
Article scientifique
Energy management of commercial buildings – A case study from a POET perspective of energy efficiency
This paper aims at analyzing the energy management activities for commercial buildings of a financial service company in South Africa …
Article scientifique
Optimising thermal photovoltaic energy system for green and sustainable energy generation
Electricity generated from a concentrated thermal photovoltaic system can be improved upon for optimum output. This investigation considered the various …
Article scientifique
Numerical optimisation of a small-scale wind turbine through the use of surrogate modelling
Wind conditions in South Africa are suitable for small-scale wind turbines, with wind speeds below 7 m.s−1. This investigation is …
Article scientifique
Characteristics of selected non-woody invasive alien plants in South Africa and an evaluation of their potential for electricity generation
Alien invasive plants (AIPs) pose a threat to the existence of plant and animal biodiversity in the ecosystems they invade. …
Article scientifique
What role can African cities play in low-carbon development? A multilevel governance perspective of Ghana, Uganda and South Africa
Cities’ ability to mainstream climate goals into their activities is, to a large extent, influenced by the vertical divisions of …
Article scientifique
Long-term temperature measurement: Biogas digesters fermenting slurry
This paper reports the results of the temperature profile of the unheated and unstirred continuous fermenting bio-slurry in a fixed-dome …
Article scientifique
Knowledge, attitudes and perceptions of stakeholders on biofuels as an enabler in a South African bio-based economy
This study investigates stakeholder knowledge, attitudes, and public perception concerning biofuels as an enabler towards a bio-based economy. In innovation …
Article scientifique
Bioethanol production from lignocellulosic sugarcane leaves and tops
Bioethanol production is one of the most promising possible substitutes for fossil-based fuels, but there is a need to make …
Article scientifique
Power calculation accuracy as a function of wind data resolution
Wind power calculations are usually based on average wind data taken over one-hour intervals. The effect of the wind data …
Article scientifique
Legislation governing the implementation of small-scale hydropower projects for rural electrification in South Africa
The Department of Energy’s ‘new household electrification strategy’ allows for any appropriate and affordable technology option to be applied towards …
Article scientifique
Is the summer season losing potential for solar energy applications in South Africa?
Seasonal trends using in situ sunshine duration (SD) and satellite, incoming shortwave solar radiation (SIS) data for South Africa over …
Article scientifique
Influence of coal properties on the performance of fixed-bed coal-burning braziers
Informal fixed-bed coal-burning braziers are used extensively in low-income communities of South Africa for space-heating and cooking needs. An investigation …
Article scientifique
Solar resource classification in South Africa using a new index
This paper introduces a solar resource index that responds to site-specific sky conditions resulting from stochastic movement and evolution of …