Kiln drying of para rubber wood lumbers is a complex transport phenomena for realistic modelling and simulation. To decouple this complexity, researchers normally divide their research into two parts, namely: one-lumber drying kinetics to describe how a wood lumber response to its surface conditions, and then combine this drying kinetic with lumped transport model or dispersion model or computational fluid dynamics. The mathematical models are then solved numerically to predict the industrial kiln drying behaviours. This work focuses on the drying kinetic of para rubber wood lumber using hot air having different %RH (6 – 67% RH) and different air temperatures (60-100°C). It was found that the drying kinetics follows conventional drying theory where there are two distinct drying periods, namely: constant and falling rate period. From the drying data analysis, it was not easy to predict the fibre saturation point because it was greatly influenced by wood microstructure which was not uniform. However, in general drying rate and overall moisture transfer coefficient increase with increasing drying temperature. RH directly affects the driving force of moisture transfer rate such that high RH reduced mass transfer rate and so do the EMC. A simple drying model was also developed which can describe the drying kinetics satisfactory. Furthermore, it can be used to predict the overall mass transfer coefficient in the falling rate period. These transport parameters will be used in more complex models in future research. Apart from the analysis of kiln drying kinetics of para rubber wood lumber, this work attempts to describe the mechanisms and dynamics of batch industrial drying processes using the engineering principles, including the laws of mass and energy conservation, heat and mass transfer as well as the phenomenon of dispersion in moisture in air. Both lumped-parameter and dispersive distributed models will be developed in this work. One unique feature of this work is the development and application of the so-called “the volumetric dispersion model (VDM)” to describe and predict the moisture distribution in wood lumber and air at various positions in kiln dryer when lumped-parameter (well-mixed) models are not applicable. This model is expected to simplify the model formulation, numerical computation and interpretation of three-dimensional nature of the chamber space inside the kiln dryers. Finally, the model will be used to predict the effect of air recycle ratio, temperature-humidity and the process interruption during kiln drying process.