Prediction of Cooling Load of a Glazed Building under Malaysia Weather Conditions

Air conditioning systems in the buildings are essential for the occupants comfort. Good estimation of the cooling load result in a better design of the HVAC system. Moreover, direct solar radiation into the office for buildings that face the east affects the occupants comfort leading to less productivity and might cause illness. This project is aimed to predict the cooling load for a glazed building (Block 16, lecturers’ offices at UTP) under Malaysia weather conditions using cooling load temperature difference (CLTD) method and Hourly Analysis Program. Cooling capacity estimations undertake many variables in order to have optimum air conditioning unit and satisfy the occupant’s needs. Some of these parameters are occupant gains, gains of heat via infiltration, lightening and ventilation and gains through windows and doors. The cooling load results have been compared against the cooling capacity of the system. The project studied the effect of tinted film on glazed wall and the temperature set point. The results show that there is 17.8% overdesign on the cooling capacity of the air handling unit compared to Hourly Analysis Program results.