DAYLIGHTING PERFORMANCE OF HORIZONTAL LIGHT PIPE BRANCHING ON OPEN PLAN OFFICE SPACE

Authors

  • Feny ELSIANA Department of Architecture, Petra Christian University, Siwalankerto 121-131, Surabaya 60236
  • Sri Nastiti EKASIWI Department of Architecture, Sepuluh November Institute of Technology, Campus ITS Sukolilo, Surabaya 60111
  • I Gusti Ngurah ANTARYAMA Department of Architecture, Sepuluh November Institute of Technology, Campus ITS Sukolilo, Surabaya 60111

:

https://doi.org/10.9744/dimensi.42.2.43-50

Keywords:

Daylighting performance, open plan office space, horizontal light pipe, branching.

Abstract

For daylighting purpose, office buildings should have a shallow plan and increase the ratio of surface to building’s volume. However, intensive use of air-conditioning drives office building’s plan to be deep with a minimum surface to volume ratio. This leads to the presence of areas that have insufficient daylight level at the work plane. Considering limitations of some daylighting methods in distributing daylight to these areas, Horizontal Light Pipe (HLP) was selected. The aim of this research was to evaluate and explain the effect of HLP branching on daylight quantity and distribution inside open plan office space. Experimental with simulation as a tool was used as the research method. HLP branching’s uniformity ratio, illuminance and Daylight Factor were compared with unbranching HLP, simultaneously with daylighting standards. Results showed that office space with HLP-L branching had higher daylight level than HLP-T branching, 296 lux and 295 lux, HLP-L and HLP-T, respectively. However, HLP-T branching distributed daylight more evenly than HLP-L branching, with uniformity ratio as 1.49:1 and 1.50:1, HLP-T and HLP-L, respectively. Both of them met the illuminance target value and uniformity at work plane. Light’s deflection and improvement amount of opening distribution decreased average illuminance and Daylight Factor up to 3.59%. Those also decreased uniformity of daylight inside the space.

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Published

2016-05-01

How to Cite

ELSIANA, F., EKASIWI, S. N., & ANTARYAMA, I. G. N. (2016). DAYLIGHTING PERFORMANCE OF HORIZONTAL LIGHT PIPE BRANCHING ON OPEN PLAN OFFICE SPACE. Dimensi: Journal of Architecture and Built Environment, 42(2), 43-50. https://doi.org/10.9744/dimensi.42.2.43-50

Issue

Vol. 42 No. 2 (2015): DECEMBER 2015

Section

Articles

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