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Browsing by UP Author "Craig, K.J. (Kenneth)"
Now showing items 1-20 of 40
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Moghimi Ardekani, Mohammad; Craig, K.J. (Kenneth); Meyer, Josua P. (American Institute of Physics, 2018-11-08)This study presents a simulation based optimization study of a multi-tube trapezoidal cavity receiver of a Linear Fresnel Collector plant in Pretoria, South Africa. A comprehensive optimization study - an optical, thermal ...
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Erasmus, Derwalt J.; Lubkoll, Matti; Craig, K.J. (Kenneth); Von Backström, Theodor W. (American Institute of Physics, 2020-12)CSP receivers are designed to permit higher outlet temperatures in order to enable higher theoretical efficiencies of the associated thermodynamic cycles. For pressurized air receivers, it is attempted to increase the ...
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Craig, K.J. (Kenneth) (American Institute of Physics, 2019-07-26)A new central receiver concept is being developed that attempts to trap solar rays and limit the re-radiation view factor. It has an array of hexagonal pyramid-like structures that form the absorbing surface facing the ...
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Marsberg, J.; Craig, K.J. (Kenneth); Meyer, Josua P. (3rd Southern African Solar Energy Conference, South Africa, 11-13 May, 2015., 2015)Paper presented to the 3rd Southern African Solar Energy Conference, South Africa, 11-13 May, 2015.
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Craig, K.J. (Kenneth); Gauche, P.; Kretzschmar, H. (Elsevier, 2014-12)Solar receivers used for central tower Concentrated Solar Power (CSP) plants use either a surface-based or volumetric heat transfer region. Volumetric receivers are more efficient but require more sophisticated and expensive ...
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Craig, K.J. (Kenneth); Nieuwoudt, M.N.; Niemand, Lukas Jurie (Elsevier, 2013-09)A computational fluid dynamics (CFD) model that evaluates mechanical mixing in a fullscale anaerobic digester was developed to investigate the influence of sewage sludge rheology on the steady-state digester performance. ...
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Rungasamy, A.E.; Craig, K.J. (Kenneth); Meyer, Josua P. (Elsevier, 2022-01)While several studies of multitube and monotube linear Fresnel receivers exist in the literature, comparative studies on different types of receivers are limited. This paper therefore aims to address this gap within ...
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Rungasamy, A.E.; Craig, K.J. (Kenneth); Meyer, Josua P. (Elsevier, 2019-03)This paper presents a comparative performance investigation of three Compact linear Fresnel collectors; a flat collector, a sun-tracking etendue-conserving collector and an off-peak etendue-conserving collector. A Monte ...
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Slootweg, Marcel; Craig, K.J. (Kenneth); Meyer, Josua P. (Elsevier, 2019-07)A novel complex geometry solar tower molten salt cavity receiver is presented and investigated with regard to its optical and thermal performance. The receiver’s design consists of a collector with the goal of limiting the ...
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Craig, K.J. (Kenneth); Meyer, Josua P.; Le Roux, Willem Gabriel (3rd Southern African Solar Energy Conference, South Africa, 11-13 May, 2015., 2015)Paper presented to the 3rd Southern African Solar Energy Conference, South Africa, 11-13 May, 2015.
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Wright, Daniell; Craig, K.J. (Kenneth); Valluri, P.; Meyer, Josua P. (Elsevier, 2023-01)Jet impingement boiling has been studied extensively and has been identified as one of the most promising thermal management techniques for high heat flux applications. Unfortunately, only a few numerical studies have been ...
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Odendaal, Diwan U.; Smith, Lelanie; Craig, K.J. (Kenneth); Sanders, Drewan S. (Emerald, 2024-06)PURPOSE: The purpose of this study is to re-evaluation fuselage design when the main wing’s has the ability to fulfill stability requirements without the need for a tailplane. The aerodynamic requirements of the fuselage ...
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Marais, M.D.; Craig, K.J. (Kenneth); Meyer, Josua P. (3rd Southern African Solar Energy Conference, South Africa, 11-13 May, 2015., 2015)Paper presented to the 3rd Southern African Solar Energy Conference, South Africa, 11-13 May, 2015.
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De Beer, P.G.; Craig, K.J. (Kenneth) (Maney, 2008)Twelve per cent chrome ferritic (non-stabilised) stainless steel cast at the continuous caster at Columbus Stainless exhibited notable differences in the width change between consecutive heats. The reason for these differences ...
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Swart, Milan André; Hockaday, L.; Reynolds, Q.G.; Craig, K.J. (Kenneth) (Southern African Institute of Mining and Metallurgy, 2023-06)A solar reflector soiling study was carried out at a ferromanganese smelter in South Africa to assess the soiling rates at different locations around the plant. Several meteorological parameters were monitored to give ...
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Momberg, Mia; Ryan, Peter G.; Hedding, David William; Schoombie, Janine; Goddard, Kyle Andrew; Craig, K.J. (Kenneth); Le Roux, Peter Christiaan (Wiley, 2023-01)Several factors may drive bird nest-site selection, including predation risk, resource avail-ability, weather conditions and interaction with other individuals. Understanding the drivers affecting where birds nest is ...
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Craig, K.J. (Kenneth); Moghimi, M.A.; Rungasamy, A.E.; Marsberg, J.; Meyer, Josua P. (Elsevier, 2016-12)The modelling of solar irradiation in concentrated solar power (CSP) applications is traditionally done with ray-tracing methods, e.g. the Monte Carlo method. For the evaluation of CSP receivers, the results from ray-tracing ...
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Schoombie, Janine; Schoombie, S.; Connan, Maelle; Jones, C.W.; Risi, M.; Craig, K.J. (Kenneth); Smith, Lelanie; Ryan, P.G.; Shepard, E.L.C. (Inter Research, 2023-11)Albatrosses exploit winds to travel vast distances across the ocean. Their morphology is adapted for low-cost dynamic soaring flight, but these adaptations confer low manoeuvrability, which may be risky when flying over ...
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Erasmus, Derwalt J.; Lubkoll, Matti; Craig, K.J. (Kenneth); Von Backstrom, Theodor W. (Springer, 2022-11)A conventional impinging jet is effective at transferring a large heat flux. However a significant pressure loss is also experienced by the free jet of a jet impingement heat transfer device due to rapid expansion because ...
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Ludick, L.; Craig, K.J. (Kenneth); Valluri, P.; Meyer, Josua P. (Elsevier, 2023-07)Jet impingement combined with phase change in the form of boiling has been proven to enhance heat transfer in thermal management applications. When added to surface enhancement, a further increase in heat transfer can be ...
Now showing items 1-20 of 40