Application of a Grasshopper component to estimate NVP:
case study in the Mucuri Valley in MG
DOI:
https://doi.org/10.46421/encac.v17i1.3748Keywords:
natural ventilation potential, Grasshopper plugin, parametric platform, Ladybug toolsAbstract
A high-performance building must meet environmental comfort and energy efficiency requirements. Possible solutions include passive strategies such as natural ventilation (NV), which can provide thermal comfort and energy savings. However, its performance depends on building design and its interaction with local climate. In this study, we evaluate the Natural Ventilation Potential (NVP) of cities in the Mucuri Valley - MG, from available weather files. The NVP calculation was implemented as a component of the Grasshopper plugin, a parameterization platform inside the 3D modeler Rhinoceros. This environment represents a new way of thinking about design, integrating climate analysis and thermo-energy simulations into the graphical representation. The NVP is based on air temperature (dry bulb and dew point) and wind speed data. It can be interpreted as the amount of hours/year in which the external climatic conditions corroborate to the use of NV as a building conditioning strategy. Based on this quantitative data, designers can verify in a generic way if, and when, natural ventilation could be adopted to improve the buildings comfort conditions in each region.
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