Optimization Design of Light Shelf for Visual Comfort and Energy Savings in a Office Space

Panel: 5. Buildings and construction technologies and systems

This is a peer-reviewed paper.

Author:
Yaseri Dahlia Apritasari, Podomoro University, Indonesia

Abstract

Visual comfort is important for the building occupants wellbeing. Visual comfort can be filled with natural lighting (daylighting) and artificial lighting. Efforts to optimize natural lighting can be achieved through façade design, and percentage area of window. However, the problem of the visual comfort is high light intensity at a some place and glare. Light shelf is a passive strategy to minimize glare, expanding the area of daylighting and increase the time that meet the visual comfort.

This paper discuss the light shelf design that can fulfill the optimal visual comfort and lighting energy savings for an office space with the case studies Prasetiya Mulya office. The methodology of research used is quantitative research with simulation modeling (DIALUX 4.13, 2016). Through following steps; (1) Making a model of office space based on case studies: Prasetiya Mulya office, Jakarta; (2). Making three models with different light shelf dimension; (3) Simulating and analyzing the light intensity value for each models that meet office visual comfort standard: 350 lux (Indonesia National Standard, 2010), glare value and optimal energy saving.

The result show that light shelf design can meet optimal visual comfort and save energy for artificial lighting. With right design of light shelves, we can expand daylighting area that meet visual comfort, minimize glare and increasing energy saving in the office.