Thermal Effect of ExternalCladding Materials on The Microclimate in Urban Environment

  • Miqdad Haidar Al-Jawadi
  • Ahmed Hani Al-Tamimi
Keywords: Sustainable urbanenvironment, climaticdesign, Cladding Materials, urban design

Abstract

It has been found recently, that many architects are using  new imported materials for external cladding,  which might cause an increase  in air temperature of the urban environment, and  creating new microclimate thermally  differ from other places according to the type of cladding materials used on building façade , especially in commercial streets, which is believed that most people feels changes in  thermal difference   in commercial streets more than the difference  in residential districts, where people are usually  indoors.

   So due to the lack of information about the effect of such material on urban environment, the paper aimed  to contribute  in discovering the effect of thermal  reflectivity and emissivity of number of cladding materials commonly used by local designers, in order that designers can have useful information, so that they will be free to choose the proper and the best suitable materials.

For getting better and more realistic results, an experimental model of  a part of commercial street represents 8 three story buildings  Scale 1:10 has been built on the roof of Department of Architecture, University of Technology , Baghdad, Iraq during August & September 2012.

   The selected scale model  has been chosen because it is suitable for taking measurements with the available infra red image camera (Fluke Came Ti32), the  electronic digital thermometers as well as the suitability for the available thickness of selected cladding materials The skeleton of the commercial street model has designed in a way that it can  help in changing and testing easily any type of cladding material.

   The experiments for six common cladding materials, shows that the material with highest thermal effect on microclimate during day time is the white aluminum composite panels, and the least effect is by using ruff white cement rendering.

   It has to be pointed outher that usingthe experimental modelin this studyis closer to realitythanmathematical calculationseven when reducing  the size ofthe model, due  tothe fact thatmodel factor is influenceddirectly proportionalto the model scale, and because  we could not find commercial streetswith uniform and similarcladding material

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Published
2018-11-19
How to Cite
Al-Jawadi, M. H. and Al-Tamimi, A. H. (2018) “Thermal Effect of ExternalCladding Materials on The Microclimate in Urban Environment”, Iraqi Journal of Architecture and Planning, 13(1). doi: 10.36041/iqjap.v13i1.161.
Section
Environmental & Sustainable Design