Transient Cooling Load Simulation of aMechanical Workshop at UTP Using TRNSYS

One of the major energy consumers in any commercial building, in hot and humid area is the air conditioning system.Therefore matching between air conditioning (AC) systems strategies with the cooling load characteristic is crucial to ensure effectiveness. Previous researches have been done to determine cooling load characteristic for office and residential building. However, same research for mechanical workshop is rare and still need further development. Due to that the paper aims to provide transient cooling load characteristic for mechanical workshop with large window glazing area through simulation using TRNSYS. The transient cooling load characteristics in the workshop during off-peak and peak period were presented. The results showed that the major contributor to the cooling load was heat gain from building envelope which was counted up to 58.54%% of the total cooling load in a year. The result also implied that cooling energy wasted during peak and off-peak period was approximately 50% of the total cooling load. Solutions to reduce the cooling load and cooling energy wasted using shading devices, thermal mass, and adjustable room temperature set point were also discussed and presented. The result showed that the AC system with adjustable room temperature set point reduced the cooling load by 42.2%.