This study used an indoor plant system to improve the indoor air quality, and discussed the correlation between the CO2 derived 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 CO2 at the CO2 concentration of 4000 ppm was 2.4847E-5 m3/h according to the experiment of CO2 absorptivity of peace lily. The theory and method of computational fluid dynamics were applied for simulating the CO2 concentration 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 CO2 change curve of the simulation result. Lastly, simulation was conducted using vertical garden to improve the CO2 concentration in the environment.
Key words: indoor plant, environmental control, computational fluid dynamics.
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