Quantifying noise exposure and natural ventilation performance in urban areas



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Figure 5. Contours of noise levels at building façade - (i) Building A in Location A. (ii) Building A in Location B. (iii) Building B in Location A. (iv) Building B in Location B.

    1. Dynamic thermal modelling


The noise exposure patterns calculated previously were transposed into a thermal building model so that ventilation opening patterns are informed by noise exposure. Whole building thermal behavior is now routinely calculated with dynamic thermal building models for applications such as determining whether mechanical cooling is required or to give an early indication of the energy use and comfort consequences of building form decisions. The thermal building software EnergyPlus was used in this paper. EnergyPlus is a mature and well validated thermal modelling software tool14. EnergyPlus was used to calculate the natural ventilation performance and was supported by the use of DesignBuilder software and the EnergyPlus Sketchup plug-in, OpenStudio, for various modelling tasks. Figure 6 shows the façade and internal layout of two building types that were modelled and assessed using EnergyPlus and positioned at the two urban locations shown in Figure 4.




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