Abstract
AbstractThe purpose of this research is the application of a passive design strategy for office buildings, the wall-window-ratio optimization under moderate climate. A simplified thermal and lighting simulation model of an office research building served as reference testbed for thermal comfort, daylight factor and illuminance as well as heating, cooling and lighting energy demand assessment. These six performance types of similarly oriented room groups are evaluated via a self-developed weighting process to determine the orientation dependent optimal wall-window-ratio of all room groups. This multi objective optimization applies in a broad range of office buildings under moderate climate.
Highlights
The worldwide largest share on public building sector comprises office buildings with high energy demand and, as a concomitant phenomenon, indoor visual and thermal discomfort
A simplified thermal and lighting simulation model of an office research building served as reference testbed for thermal comfort, daylight factor and illuminance as well as heating, cooling and lighting energy demand assessment
According to EN 15251 [11], the thermal comfort is assessed as the number of hours in the building with Predicted Mean Vote (PMV), À0.5> PMV
Summary
The worldwide largest share on public building sector comprises office buildings with high energy demand and, as a concomitant phenomenon, indoor visual and thermal discomfort. The cooling demand is decisively high; due to offices’ characteristic it uses high internal heat loads. This effect has further increased by the common high Wall-Window-Ratio (WWR) of the building envelope (e.g., widespread of fully glazed facades). The present problem is an investigation domain of several simulation supported studies, aiming to improve comfort and energy performance with help of the active services systems and/or with application of passive, architectural design strategies. Building envelope investigations concentrate on fenestration WWR, geometry, orientation and form ratio [3,4,5], thermal insulation and thermal performance of glazing [6], transparent insulated facades [7]. Further studies couple thermal mass, under-floor heating, Unauthenticated | Downloaded 11/02/21 12:05 PM UTC
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