Effects of daylighting on the annual heating and cooling energy use in office buildings

Wonuk Kim, Jongug Jeon, Honghee Park, Jooseong Lee, Yongchan Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Daylightable floor area can be determined by the geometries such as window area, perimeter area, and floor area. The daylightable floor area ratio (DFR), which is defined as the ratio of the daylightable floor area to the total floor area, decreases with an increase in the floor area. In this study, the heating and cooling energy consumption of office buildings was simulated by using eQUEST(DOE-2.2). The energy performance of the buildings applying dimming control of lighting with daylight was estimated by varying the floor area (six cases) and window-to-wall ratio (WWR) (four cases). The relationships for the reduction in the annual heating and cooling energy according to daylight and DFR in office buildings were developed by using a multiple regression analysis. As a result, the annual cooling energy in the buildings decreased, but the annual heating energy increased by applying daylight as lighting. The reduction rate in the annual cooling energy of the buildings with large floor area was smaller than that of the buildings with small floor area. The buildings having high WWR showed smaller energy reduction rate due to an increase in infiltration and thermal heat transfer through window. The increasing rate in the annual heating energy of the buildings with large floor area was larger than that of the buildings with small floor area. The buildings having high WWR showed smaller increasing rate of the annual heating energy due to an increase in radiation heat transfer through window.

Original languageEnglish
Title of host publication30th ISES Biennial Solar World Congress 2011, SWC 2011
Pages808-817
Number of pages10
Publication statusPublished - 2011
Event30th ISES Biennial Solar World Congress 2011, SWC 2011 - Kassel, Germany
Duration: 2011 Aug 282011 Sep 2

Publication series

Name30th ISES Biennial Solar World Congress 2011, SWC 2011
Volume1

Other

Other30th ISES Biennial Solar World Congress 2011, SWC 2011
CountryGermany
CityKassel
Period11/8/2811/9/2

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment

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  • Cite this

    Kim, W., Jeon, J., Park, H., Lee, J., & Kim, Y. (2011). Effects of daylighting on the annual heating and cooling energy use in office buildings. In 30th ISES Biennial Solar World Congress 2011, SWC 2011 (pp. 808-817). (30th ISES Biennial Solar World Congress 2011, SWC 2011; Vol. 1).