Cooling Load Analysis in Asrama Kinanti 1 UGM Using Building Performance Simulation

Abstract

Indonesia is predicted to increase energy needs by 4.1 GW each year until the year 2030. These energy needs are using fossil fuels, which will harm the environment because of air pollution. Based on that fact, the reduction of energy consumption in Indonesia is a must. One of the highest energy demands is in the building sector. The building for both residential and commercial consumes 61.5% of national total energy consumption. Moreover, in the building sector, almost 60% is consumed for air conditioning (AC) systems, and one-third of the total energy consumption is for other electrical equipment. Nevertheless, to maintain thermal comfort in a building, the AC system is crucial, and the intention to remove it reduces occupants' comfort significantly. The AC system that has a lot of energy consumption depends on the cooling load. However, because of the complexity in the calculation, several heat gains in cooling load (namely, people, equipment, lighting, solar, and ventilation) need to simulate. In this study, the simulation software is IES-VE software. Furthermore, a research object in this study is Asrama Kinanti 1 that is known as a kind of residential building in Universitas Gadjah Mada, operating 24 hours a day. The results show that the external heat gains (solar and ventilation) can be minimized during 8:00 A.M. to 3:30 P.M. Meanwhile, the internal heat gains (lighting, people, and equipment) can be reduced during the rest of the day.