Natural air ventilation for green building

What is it?

Natural air ventilation is the process of assessing airflow potential and removal inside buildings to avoid using only mechanical systems. It is worthwhile to take benefit of the wind as a driving force or an element of the buildings ventilation for its refreshment or the indoor air renewal.

Why?

You can refresh buildings with a natural ventilation system and design bioclimatic, passive and high performance buildings.

It’s environmentally friendly with less energy use, healthy thanks to improved air quality, profitable because you have low cost in energy consumption and maintenance of all-mechanical system.

Solution: numerical simulation with Computational Fluid Dynamics (CFD)

URBAWIND is a wind flow modelling software especially developed for buildings in urban areas.

Natural ventilation potential depends on topography, ground roughness and nearby buildings. It makes necessary a quantitative approach, using numerical computation and modelling of the physical phenomena.

  • Computation of all wind characteristics: mean speed, wind directions, turbulence
  • Consideration of the environment (topography, roughness and vegetation)
  • Accurate CFD computations for any architectural forms and dimensions
  • 3D wind visualization
  • Display of all the information the user needs in a clear and user-friendly interface

Meteodyn consulting services

Energy performance of buildings in urban area – Green building design

Mapping of natural air ventilation potential

Pressure field around buildings is analyzed to assess natural air ventilation potential depending on prevailing wind directions.

Air exchange rate computation to optimize indoor thermal comfort

Air exchange rates and air flow are quantified taking into account natural air ventilation assessment of the site, buildings form and orientation, windows / openings and other apertures shape and location.

And more services to design green buildings

Mapping of solar radiation fluxes on buildings walls

Assessment of solar gain on glazed surfaces, on façades/or roofs (building envelope) provides necessary input data to thermal balance for low energy and passive buildings in eco-districts.

Meteodyn also helps you in your passive cooling design building to improve indoor thermal comfort including low energy consumption. We study local climatology and energy potential to be combined with the architectural design led by HVAC (heating, ventilation, and air conditioning) design engineers.


Moderated by : Sylvain Bosquet

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