Analysis of Lighting Performance in the Hall of the Faculty of Engineering, State University of Gorontalo by using the DIALux Evo 9.0 Simulation

The need for light in the room is something that cannot be negotiated. Meeting these needs can be obtained through natural lighting and artificial lighting or a combination of both. The purpose of this study is to analyze the performance of natural lighting, especially the daylight factor in the Hall of the Faculty of Engineering, State University of Gorontalo, and provide solutions to improve lighting performance in the room. The research method was carried out through a computer simulation (computer simulation) with DIALux Evo 9.0 software by comparing the existing model and the engineering design model. The latter was carried out by changing the handrail material into transparent material such as glass, adding windows on both sides, and adding light shelves outside and inside the building. The FT Hall room simulation was conducted on September 21 with clear sky conditions within the significant lecture period from 07.00 to 17.00. The simulation results show that the engineering design can increase natural light intensity on the left and right edges compared to the existing conditions, with an average increase of 18%. However, this engineering has not reached the middle of the stands, so that additional engineering is needed to optimize natural lighting. Interestingly, this engineering design reduced excessive light intensity at points A1 and A3 with an average of 847 lux at the existing A1 point, down to 709 lux in the engineering design. Meanwhile, A3, with an average of 653 lux for the existing one, drops to 569 lux in the engineering design. The result shows that the engineering design can optimize the direction of light according to the target point and reduce glare, although additional engineering is still needed.