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Energies 2014, 7(4), 2362-2376; doi:10.3390/en7042362
Article

Window Material Daylighting Performance Assessment Algorithm: Comparing Radiosity and Split-Flux Methods

,
 and
*
Department of Architectural Engineering, Hanbat National University, San 16-1, Dukmyung-Dong, Yuseong-Gu, Daejeon 305-719, Korea
* Author to whom correspondence should be addressed.
Received: 2 March 2014 / Revised: 2 April 2014 / Accepted: 8 April 2014 / Published: 14 April 2014
(This article belongs to the Special Issue Energy Efficient Building Design and Operation 2014)
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Abstract

Windows are the primary aperture to introduce solar radiation to the interior space of a building. This experiment explores the use of EnergyPlus software for analyzing the illuminance level on the floor of a room with reference to its distance from the window. For this experiment, a double clear glass window has been used. The preliminary modelling in EnergyPlus showed a consistent result with the experimentally monitored data in real time. EnergyPlus has two mainly used daylighting algorithms: DElight method employing radiosity technique and Detailed method employing split-flux technique. Further analysis for illuminance using DElight and Detailed methods showed significant difference in the results. Finally, we compared the algorithms of the two analysis methods in EnergyPlus.
Keywords: EnergyPlus; DElight; Detailed; illuminance; radiosity; split-flux EnergyPlus; DElight; Detailed; illuminance; radiosity; split-flux
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
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Yoon, Y.B.; Jeong, W.R.; Lee, K.H. Window Material Daylighting Performance Assessment Algorithm: Comparing Radiosity and Split-Flux Methods. Energies 2014, 7, 2362-2376.

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