De Vaal, P.

The University of Pretoria, Pretoria, South Africa

Philip De Vaal graduated from the Department of Chemical Engineering, University of Pretoria, with a BS degree in chemical engineering in 1976, followed by an MS degree and PhD. Dr. de Vaal is now an Emeritus professor of chemical engineering and previously served as the Head of this department from 2004–2020.

Integral vs. proportional gap for averaging level control

Gous, G., De Vaal, P., The University of Pretoria

In process plants, many instances of level control are required to keep the material balance of the plant from integrating to undesired operating conditions.