Solar Energy and Building Physics Laboratory LESO-PB – CitySim Software

The new software CitySim is aiming to provide a decision support for urban energy planners and stakeholders to minimize the net use of non-renewable energy sources as well as the associated emissions of greenhouse gases. In developing and testing this software several ambitious aims were reached in order:

  • To support the software users to describe, in an appropriate way, the 3D geometrical buildings forms at the scale of an urban district (comprising several hundreds of buildings) and to attribute these buildings thermo-physical properties in an efficient way;
  • To simulate the energy demand of these buildings, respecting the stochastic nature of occupants’ presence and behaviour and accounting for a range of commonly used heating, ventilation and air conditioning systems (HVAC systems);
  • To determine the energy supplies of these buildings issued from renewable sources, including the radiation exchange driven by the urban environment, generated by a range of commonly used energy conversion systems;
  • To present a range of graphical tools to the software users to support the analysis of energy performance data in order to identify scope for improving upon buildings’ performance.

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