Numerical simulation and construction of using indoor plants to improve indoor air quality

摘要

This study used an indoor plant system to improve the indoor air quality, and discussed the correlation between the CO2derived from human breathing and the photosynthesis of plants. This study took peace lily (Spathiphyllum kochii) as the experimental target. The absorptivity of peace lily to CO2at the CO2concentration of 4000 ppm was 2.4847E-5 m3/h according to the experiment of CO2absorptivity of peace lily. The theory and method of computational fluid dynamics were applied for simulating the CO2concentration changes in a confined space with and without indoor plants. The constructed experimental environment and numerical simulation were used for validation and comparison. The obtained experimental data matched the CO2change curve of the simulation result. Lastly, simulation was conducted usingvertical garden to improve the CO2concentration in the environment.