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Energies 2016, 9(3), 177; doi:10.3390/en9030177

Impact of Urban Morphology on Infiltration-Induced Building Energy Consumption

Faculty of Civil Engineering and Architecture, Kaunas University of Technology, Studentu str. 48, 51367 Kaunas, Lithuania
School of Mechanical Engineering, National Technical University of Athens, 15780 Zografou, Greece
Author to whom correspondence should be addressed.
Academic Editor: Jukka Heinonen
Received: 12 January 2016 / Revised: 23 February 2016 / Accepted: 2 March 2016 / Published: 9 March 2016
(This article belongs to the Special Issue Energy Efficient City)
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External air movement within built neighborhoods is highly dependent on the morphological parameters of buildings and surroundings, including building height and street cavity ratios. In this paper, computational fluid dynamics (CFD) methods were applied to calculate surface pressure distributions on building surfaces for three city models and two wind directions. Pressure differences and air change rates were derived in order to predict the heating load required to cover heat losses caused by air infiltration. The models were based on typical urban layouts for three cities, and were designed of approximately equal built volumes and equal air permeability parameters. Simulations of the three analyzed building layouts resulted in up to 41% differences in air change rates and heat losses caused by air infiltration. In the present study, wind direction did not have a significant impact on the relative difference between the models, however sideward wind direction caused higher air change rates and heat losses for all simulated layouts. View Full-Text
Keywords: urban airflow; computational fluid dynamics (CFD) predictions; air infiltration; energy performance of buildings urban airflow; computational fluid dynamics (CFD) predictions; air infiltration; energy performance of buildings

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Jurelionis, A.; Bouris, D.G. Impact of Urban Morphology on Infiltration-Induced Building Energy Consumption. Energies 2016, 9, 177.

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