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Analysing the impact of changes in the urban climate, urban form and fabric on building energy use and greenhouse gas emissions.

Number: pap. 410

Author(s) : SOEBARTO V., GUAN H.

Summary

This paper addresses the impact of changes in urban climate and urban forms on building energy use and greenhouse gas (GHG) emissions. As increasing population in cities demands more buildings to be constructed on open or green spaces, urban climate changes and tends to become warmer. Besides this phenomenon, it has also been predicted that temperatures globally will only be increasing overtime due to changes in macroclimate. In this paper, the impact of increasing urban temperatures, more frequent occurrence of heat waves and higher building density on building energy use and GHG emission will be presented. The relationships between these factors are investigated through building performance simulations. Three multi-storey office buildings located in Adelaide CBD, Australia, are used as case studies. The study finds that the total GHG emission from these buildings would increase with the rise of urban temperatures due to the increase in fuel used for space cooling. A period of heat waves during summer would significantly increase the peak electricity demand by up to 17%. On the other hand, with increasing building density which results in constructing taller buildings surrounding the case study buildings, GHG emissions from these buildings would decrease. As buildings become taller and shade each other, solar heat gains would be reduced thus decreasing cooling energy. The paper concludes with remarks on aspects to be considered in urban planning and design.

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Pages: 10 p.

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Details

  • Original title: Analysing the impact of changes in the urban climate, urban form and fabric on building energy use and greenhouse gas emissions.
  • Record ID : 30009008
  • Languages: English
  • Source: Clima 2013. 11th REHVA World Congress and 8th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings.
  • Publication date: 2013/06/16

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