Dynamic Simulation Modelling

Dynamic Simulation Modelling is a requirement for the energy assessment of complex commercial buildings and is increasingly being used for residential buildings to provide highly accurate thermal models

Dynamic Simulation Modelling (DSM) is typically used to model large and complex commercial buildings. We use Design Builder software for all of our DSM calculations, ensuring highly accurate results. 

Design Builder is based on Energy Plus building simulation which allows us to model both commercial and domestic buildings, along with calculating the overheating risk and daylighting factors. 

Dynamic Simulation Modelling Criteria

As standard, most commercial properties will be modelled with an SBEM calculation. However, some buildings are deemed too complex to be assessed under SBEM. These are classed as Level 5 and require Dynamic Simulation Modelling (DSM) to be undertaken. 

If a property meets one or more of the following criteria, a DSM assessment is required:

  • Ventilation with enhanced thermal coupling to the structure
  • Automatic blind control
  • Atria

DSM can also be used to model Level 3 or 4 properties and often results in a better performing building due to the increased accuracy of the calculation.

  • Hourly weather data with time step control
  • Building & PV orientation & inclination modelled in 1° increments
  • More precise geometry modelling
  • Includes internal openings
  • Improved solar shading
  • Inter-zone heat transfer
Dynamic Simulation Modelling

All of our thermal modelling is undertaken using Design Builder software, ensuring precise models with accurate results. More information on the software we use can be found here

Frequently Asked Questions

DSM uses a much more precise level of modelling than SBEM. Models are based on hourly weather data, solar shading gain is modelled more precisely  and orientations and inclinations are at one degree increments instead of the simple 8 compass orientations that SBEM uses. This means that even if DSM is not a requirement on your building, it is often a better option and can provide a better result. 

If a property meets one or more of the following criteria, a DSM assessment is required:

  • Ventilation with enhanced thermal coupling to the structure
  • Automatic blind control
  • Atria

DSM is largely used on developments in London where overheating analysis can also be carried out with the same model to comply with The London Plan.

Yes, we are increasingly seeing this being the case. DSM can model overheating very accurately. It is more commonly used on developments in London however it is also used by self builders and high end developers to ensure highly glazed dwellings are not at a high risk of overheating