The urban canyon and building energy use: urban density versus daylight and passive solar gains

Jakob Strømann-Andersen; Peter Andreas Sattrup

doi:10.1016/j.enbuild.2011.04.007

The urban canyon and building energy use: urban density versus daylight and passive solar gains

Bidragets oversatte titel: Bymæssig tæthed og bygningers energiforbrug: Højde-afstand profilets indflydelse på bolig- og kontorbyggeris totale energiforbrug i et Nordeuropæisk klima

Jakob Strømann-Andersen, Peter Andreas Sattrup

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › peer review

Abstract

Ved at anvende dynamiske klimabaserede digitale simulationsmodeller undersøges indflydelsen af den bymæssige tæthed på bygningers energiforbrug til belysning, opvarmning og køling som funktion af byrummets højde-afstandsprofil.

Bidragets oversatte titel	Bymæssig tæthed og bygningers energiforbrug: Højde-afstand profilets indflydelse på bolig- og kontorbyggeris totale energiforbrug i et Nordeuropæisk klima
Originalsprog	Engelsk
Tidsskrift	Energy and Buildings
Vol/bind	43
Udgave nummer	8
ISSN	0378-7788
DOI	https://doi.org/10.1016/j.enbuild.2011.04.007
Status	Udgivet - aug. 2011

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Adgang til dokumentet

10.1016/j.enbuild.2011.04.007

http://dx.doi.org/10.1016/j.enbuild.2011.04.007

Citationsformater

@article{26369da2c4ad41068fc9682a34a4f792,

title = "The urban canyon and building energy use: urban density versus daylight and passive solar gains",

abstract = "The link between urban density and building energy use is a complex balance between climatic factors and the spatial, material and use patterns of urban spaces and the buildings that constitute them. This study uses the concept of the urban canyon to investigate the ways that the energy performance of low-energy buildings in a north-European setting is affected by their context.This study uses a comprehensive suite of climate-based dynamic thermal and daylight simulations to describe how these primary factors in the passive energy properties of buildings are affected by increases in urban density.It was found that the geometry of urban canyons has an impact on total energy consumption in the range of up to +30% for offices and +19% for housing, which shows that the geometry of urban canyons is a key factor in energy use in buildings. It was demonstrated how the reflectivity of urban canyons plays an important, previously underestimated role, which needs to be taken into account when designing low-energy buildings in dense cities. Energy optimization of urban and building design requires a detailed understanding of the complex interplay between the temporal and spatial phenomena taking place, merging qualitative and quantitative considerations.",

author = "Jakob Str{\o}mann-Andersen and Sattrup, {Peter Andreas}",

year = "2011",

month = aug,

doi = "10.1016/j.enbuild.2011.04.007",

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T2 - urban density versus daylight and passive solar gains

AU - Strømann-Andersen, Jakob

AU - Sattrup, Peter Andreas

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N2 - The link between urban density and building energy use is a complex balance between climatic factors and the spatial, material and use patterns of urban spaces and the buildings that constitute them. This study uses the concept of the urban canyon to investigate the ways that the energy performance of low-energy buildings in a north-European setting is affected by their context.This study uses a comprehensive suite of climate-based dynamic thermal and daylight simulations to describe how these primary factors in the passive energy properties of buildings are affected by increases in urban density.It was found that the geometry of urban canyons has an impact on total energy consumption in the range of up to +30% for offices and +19% for housing, which shows that the geometry of urban canyons is a key factor in energy use in buildings. It was demonstrated how the reflectivity of urban canyons plays an important, previously underestimated role, which needs to be taken into account when designing low-energy buildings in dense cities. Energy optimization of urban and building design requires a detailed understanding of the complex interplay between the temporal and spatial phenomena taking place, merging qualitative and quantitative considerations.

AB - The link between urban density and building energy use is a complex balance between climatic factors and the spatial, material and use patterns of urban spaces and the buildings that constitute them. This study uses the concept of the urban canyon to investigate the ways that the energy performance of low-energy buildings in a north-European setting is affected by their context.This study uses a comprehensive suite of climate-based dynamic thermal and daylight simulations to describe how these primary factors in the passive energy properties of buildings are affected by increases in urban density.It was found that the geometry of urban canyons has an impact on total energy consumption in the range of up to +30% for offices and +19% for housing, which shows that the geometry of urban canyons is a key factor in energy use in buildings. It was demonstrated how the reflectivity of urban canyons plays an important, previously underestimated role, which needs to be taken into account when designing low-energy buildings in dense cities. Energy optimization of urban and building design requires a detailed understanding of the complex interplay between the temporal and spatial phenomena taking place, merging qualitative and quantitative considerations.

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DO - 10.1016/j.enbuild.2011.04.007

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