Search Results - "Engelbrecht, J.A.A."

An assessment of some theoretical models used for the calculation of the refractive index of In X Ga 1−x As by Engelbrecht, J.A.A.

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Motion planning for a hexapod robot over uneven terrain by Di Leva, J.A., Engelbrecht, J.A.A.

“…This paper explores the motion planning of a hexagonal-based hexapod robot (Hexapod) for executing complex motions. The system utilized the Denavit-Hartenberg…”
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How much energy can optimal control of domestic water heating save? by Booysen, M.J., Engelbrecht, J.A.A., Ritchie, M.J., Apperley, M., Cloete, A.H.

“…Scheduled control of domestic electric water heaters, designed to cut energy use while minimising the impact on users' comfort and convenience, has been fairly…”
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Dataset for the characterisation of thermal stratification in horizontally configured electric water heaters by van Schalkwyk, P.D., Engelbrecht, J.A.A., Booysen, M.J.

“…A test station was designed and built to measure the thermal stratification (vertical thermal gradients) in a horizontal 150 L electric water heater storage…”
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Impact of dielectric parameters on the reflectivity of 3C–SiC wafers with a rough surface morphology in the reststrahlen region by Engelbrecht, J.A.A., Janzén, E., Henry, A., van Rooyen, I.J.

“…A layer-on-substrate model is used to obtain the infrared reflectance for 3C–SiC with a rough surface morphology. The effect of varying dielectric parameters…”
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The influence of neutron-irradiation at low temperatures on the dielectric parameters of 3C-SiC by Engelbrecht, J.A.A., Deyzel, G., Minnaar, E.G., Goosen, W.E., van Rooyen, I.J.

“…3C-SiC wafers were irradiated with neutrons of various fluences and at low (200–400°C) irradiation temperatures. Fourier transform infrared (FTIR) reflectance…”
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Numerical modelling of thermal stratification scenarios in horizontal electric hot water storage tanks by van Schalkwyk, P.D., Meyer, J.P., Engelbrecht, J.A.A., Booysen, M.J.

“…Hot water storage tanks are important in residential and industrial heating systems, ensuring a reliable hot water supply. Despite their importance, there is a…”
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Impact of node count on energy-optimal control of stratified vertical water heaters in smart grid applications by Ritchie, M.J., Engelbrecht, J.A.A., Booysen, M.J.

“…The energy requirements for an Electric Water Heater (EWH) accounts for 40% of a household's total energy consumption and 7% of South Africa's energy…”
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Loadshedding-induced transients due to battery backup systems and electric water heaters by Ritchie, M.J., Engelbrecht, J.A.A., Booysen, M.J.

“…Loadshedding has become the norm in South Africa, with rolling blackouts ranging from Stage 1 to 6. This results in households experiencing disempowerment for…”
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A state-space heating and cooling model for thermal stratification in horizontally configured electric hot water storage cylinders by van Schalkwyk, P.D., Engelbrecht, J.A.A., Meyer, J.P., Booysen, M.J.

“…Domestic water heating significantly impacts global energy demand, with electric hot water storage devices notably contributing to grid load. Efficient…”
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Thermodynamic analysis of stratification in thermal energy storages implemented in cogeneration systems by Thomas, B., van Schalkwyk, P.D., Engelbrecht, J.A.A., Haase, P., Maier, A., Widmann, C., Booysen, M.J.

“…In the course of a more intensive energy generation from regenerative sources, an increased number of energy storages is required. In addition to the…”
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A probabilistic hot water usage model and simulator for use in residential energy management by Ritchie, M.J., Engelbrecht, J.A.A., Booysen, M.J.

“…Water heating contributes up to 40% of a household’s total electricity usage and places a substantial burden on the electricity grid due to high power ratings…”
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A data-driven household electricity synthesiser for South Africa using enveloped sum of Gaussians by Ritchie, M.J., Engelbrecht, J.A.A., Booysen, M.J.

“…Accurate modelling of household electricity on a large scale is a cornerstone for demand management and decarbonisation efforts. This paper introduces a…”
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A sliding mode observer approach to oscillatory fault detection in commercial aircraft by Keijzer, T., Engelbrecht, J.A.A., Goupil, P., Ferrari, R.M.G.

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An assessment of some theoretical models used for the calculation of the refractive index of InXGa1−xAs by Engelbrecht, J.A.A.

“…Theoretical models used for the determination of the refractive index of InXGa1−XAs are reviewed and compared. Attention is drawn to some problems experienced…”
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Optimal schedule and temperature control of stratified water heaters by Engelbrecht, J.A.A., Ritchie, M.J., Booysen, M.J.

“…Water heating is a major component of domestic electrical energy usage, in some countries contributing to 25% of the residential sector energy consumption…”
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Predicting residential water and electricity usage profiles with a temporal histogram model by Ritchie, M.J., Engelbrecht, J.A.A., Booysen, M.J.

“…The temporal histogram model and synthesiser that is presented in this paper statistically models the unique usage behaviour of electricity or hot water usage…”
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Optimal sizing of battery-less domestic rooftop PV systems in South Africa using a probabilistic electricity synthesiser by Ritchie, M.J., Avenant, J., Engelbrecht, J.A.A., Rix, A.J., Booysen, M.J.

“…Solar Photovoltaic, or PV, systems are the topic of conversation that has transpired globally due to their benefits of decelerating the rapid depletion of…”
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Assesment of a model to calculate the refractive index of AlXGa1-XN epilayers using the multi-oscillator model simulation of the infrared reflectance by Engelbrecht, J.A.A., Minnaar, E.G., van Dyk, E.E., Westraadt, J.E., Sephton, B., Lee, M.E., Henry, A.

“…A formula for the calculation of the refractive index of AlXGa1-XN in the infrared region has previously been proposed. In this paper, the validity of the…”
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Comments on a peak of Al x Ga 1 − x N observed by infrared reflectance by Marx, G., Engelbrecht, J.A.A., Lee, M.E., Wagener, M.C., Henry, A.

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