Quantifying Impacts of Urban Microclimate on a Building Energy Consumption—A Case Study

This paper considered an actual neighborhood to quantify impacts of the local urban microclimate on energy consumption for an academic building in College Park, USA. Specifically, this study accounted for solar irradiances on building and ground surfaces to evaluate impacts of the local convective h...

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Bibliographic Details
Published in:Sustainability 2019-09, Vol.11 (18), p.4921
Main Authors: Liu, Jiying, Heidarinejad, Mohammad, Nikkho, Saber Khoshdel, Mattise, Nicholas W., Srebric, Jelena
Format: Article
Language:English
Subjects:
Atmospheric boundary layer
Buildings
Case studies
Climate change
Computational fluid dynamics
Computer applications
Convective heat transfer
Cooling
Cooling loads
Cooling rate
Cooling systems
Data exchange
Energy consumption
Engines
Fluid dynamics
Heat
Heat transfer
Heat transfer coefficients
Heating load
Hydrodynamics
Infiltration rate
Mathematical models
Microclimate
Neighborhoods
Simulation
Temperature
Turbulence models
Variables
Velocity
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Summary:This paper considered an actual neighborhood to quantify impacts of the local urban microclimate on energy consumption for an academic building in College Park, USA. Specifically, this study accounted for solar irradiances on building and ground surfaces to evaluate impacts of the local convective heat transfer coefficient (CHTC), infiltration rate, and coefficient of performance (COP) on building cooling systems. Using computational fluid dynamics (CFD) allowed for the calculation of local temperature and velocity values and implementation of the local variables in the building energy simulation (BES) model. The discrepancies among the cases with different CHTCs showed slight influence of CHTCs on sensible load, in which the maximum variations existed 1.95% for sensible cooling load and 3.82% for sensible heating load. The COP analyses indicated windward wall and upstream roof are the best locations for the installation of these cooling systems. This study used adjusted infiltration rate values that take into account the local temperature and velocity. The results indicated the annual cooling and heating energy increased by 2.67% and decreased by 2.18%, respectively.
ISSN:2071-1050
2071-1050
DOI:10.3390/su11184921