High humidity air flow in Minor Operation Theatre (MOT) is undesired as it will cause discomfort to the occupant. Acceptable humidity air flow is important as it will affect the pureness of the indoor environment as well. The objective of this research work is to construct a realistic Computational Fluid Dynamics (CFD) model of MOT for investigation. The MOT which is occupied with one unit of Air Conditioner has been selected for this study. The RH of air is analysed. The experimental data is collected by applying a digital air flow anemometer with USB interface and the channels digital handheld temperature thermometer meter data loggers for validation purpose. CFD simulation is conducted by applying ANSYS Fluent software. The experimental result and simulation is compared and validated. Based on the simulation and experiment findings, it reveals that ANSYS Fluent can be used for RH in MOT.
