Evaluation Of Multi-Year Convection Permitting Climate Model Data For The Assessment Of Overheating In Flemish Office Buildings

The energy performance of a building is to an important extent influenced by the outdoor climate. For this purpose, the outdoor climate data should be accurately represented in building energy models (BEM). Currently, representative years based on observations (e.g. an International Weather for Energy Calculations, IWEC) are commonly used in BEMs. However, one may require multi-decadal periods of weather data better reflecting the range of weather conditions including extremes to which buildings are exposed to. Convection-permitting models (CPM) have a much better spatial coverage and can provide multi-decadal information including climate change scenarios. For Belgium, multi-decadal CPM data have been developed for the current and future climate perspective. This paper is part of a broader research on the integration of CPM data in BEMs and focuses on the added value of the long-term climate model data and the comparison of the CPM data with the IWEC data. Both data formats are compared and applied in a BEM of an office building. In general, both weather files lead towards similar results but the IWEC file tends to overestimate the cooling load.

Publication year:2018

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