Developing a Digital Workflow to Estimate Green Walls’ Performance for Enhancing Indoor Air Quality

Abstract

Vertical greening systems, or living walls, are increasingly used indoors due to their potential to improve air quality by mitigating excess Carbon Dioxide (CO2) levels (Dominici et al., 2021). This study introduces a parametric workflow that utilizes digital light simulations to estimate the performance of green walls in terms of their ability to perform photosynthesis and subsequently reduce indoor CO2 levels. To accomplish this, the workflow uses the Rhino inside Revit plugin to identify any Revit model and then uses Rhino plugins, Grasshopper and Honeybee to simulate cumulative radiation on a grid of sensors on each leaf, after that the plant leaves' capacity to perform photosynthesis based on the compensation point of light and calculates the amount of CO2 reduction accordingly was tested. The workflow was applied in the study using a sample plant, Epipremnum aureum.