Calculating Algorithm to Estimate the Hygrothermal Performance of Vegetation for Green Screen Façades
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Date
2023
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Abstract
Using plants as sun protection is of increasing interest because of the many benefits of vegetal material, in contrast to conventional sunscreens. However, its application and studies are currently limited by the complexity of considering organic variables as part of its performance in relation to a climate context. These limitations are evident in digital simulation softwares, which does not allow quantifying the thermal benefits that distinguish this protection from conventional ones in energy balance simulations. This work presents a method for evaluating the cooling potential of green screen façades that allows the model to differentiate and measure the effect of green screen façades as a shading device and as an evaporative cooling strategy. For this, a hygrothermal model is developed integrating calculation models provided by various authors within the Grasshopper platform using the EnergyPlus simulation engines. The results portray it is possible to simulate the virtual thermal behavior of the vegetal material, incorporating the evapotranspiration of the plant and its properties in the calculation of the air conditioning demands of buildings.
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Green screen façade, Evapotranspiration, Simulation, Thermal comfort, Plants