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Structural analysis of chars generated from South African inertinite coals in a pipe-reactor combustion unit
(Elsevier Science, 2011)
An inertinite-rich medium rank C bituminous South African coal was utilized to generate chars in a pipe-reactor combustion unit. This unit generates chars at atmospheric pressures and temperature was controlled with N2 to ...
An integral CFD approach for the thermal simulation of the PBMR reactor unit
(Elsevier, 2011)
A CFD method was developed to conduct integral thermal reactor analysis for the complete Reactor Unit of the Pebble Bed Modular Reactor (Pty) Ltd (PBMR). The requirement was however also to include very detailed aspects ...
The random pore model with intraparticle diffusion for the description of combustion of char particles derived from mineral- and inertinite rich coal
(Elsevier Science, 2011)
An investigation was undertaken to determine the applicability of the random pore model with intraparticle diffusion for the determination of the reaction kinetics for the combustion of chars particles derived from coals ...
Assessing the catalytic effect of coal ash constituents on the CO2 gasification rate of high ash, South African coal
(Elsevier, 2011)
The catalytic effect of inorganic species, within the ash, on the CO2 gasification of three South African coals containing similar carbon-structural properties (elemental, structural and petrographical properties) was ...
Revival of unsuccessful chemotherapeutics for highly glycolytic cancers?
(Elsevier, 2011)
Around 90% of cancer deaths can be ascribed to metastases , usually highly glycolytic. Rodent models are used when developing drugs to attack these cancers
An integrated self-sensing approach for active magnetic bearings
(IEEE, 2011)
Self-sensing permits active magnetic bearings (AMBs) to consolidate the actuation and sensing functions into a single electromagnetic transducer. Eliminating the position sensing device as well as interfacing reduce potential ...
Self-sensing for electromagnetic actuators. Part 2. Position estimation
(Elsevier, 2011)
The second paper in a two part series presents the position estimation scheme for an 8-pole heteropolar active magnetic bearing (AMB). The integrated self-sensing assembly comprises a nonlinear MIMO parameter estimator ...
Investigating leakage and bypass flows in an HTR using a CFD methodology
(Elsevier, 2011)
An area that has been identified as significantly important in the development of a high temperature reactor (HTR) is the prediction of leakage and bypass flows. It is therefore essential to understand the influence of ...
Volatile trace element behaviour in the Sasol® fixed-bed dry-bottom (FBDB)™ gasifier treating coals of different rank
(Elsevier, 2011)
Trace element simulation and validation of model predictions for the elements Hg, As, Se, Cd and Pb have recently been undertaken for the Sasol® FBDB™ gasification process operating on lump coal. The validation was conducted ...
Self-sensing for electromagnetic actuators. Part 1. A coupled reluctance network model approach
(Elsevier, 2011)
A self-sensing arrangement in active magnetic bearings (AMBs) comprises a single electromagnetic transducer to realize the actuation and sensing functions concurrently. Minimizing the number of sensing devices and associated ...