EFFECT OF PARTITIONS ON DAYLIGHT PENETRATION IN OPEN PLAN OFFICE SPACES

摘要

Effective daylight penetrates throughout the space to a point beyond which daylight levels become too low. This penetration is largely affected by interior partitions widely used in office buildings. Recent green building guidelines such as the Leadership in Energy and Environmental Design (LEED) require the documentation of daylight penetration. This documentation assumes an empty space. The objective of this study is to compare daylight levels of an empty open plan office to that with partitions to find a rule of thumb that could relate the two configurations. Computer simulations using Dialux and scaled model field measurement were done using the latitude of 24,2. This latitude provides for very high solar altitudes during the month of June reaching over 89 degrees on June 21st. Three different room configurations were used; a base case which is a room that is empty and two other room configurations each with a different open plan furniture layout. The ratios (RE) of Illuminance values of fifteen points within the space with partitions to the Illuminance values of the empty room were found. We found that a rule of thumb could be developed to relate the empty office Illuminance values to that of the partitioned space based on the position of the point within the space.