Optimal Indoor Plant Layout for Purifying Indoor Air

Indoor pollutants include CO2, CO, HCHO, TVOC, bacteria, fungi, PM10, PM2.5, and O-3 (Environmental Protection Administration, Executive Yuan, R.O.C. [Taiwan]). Because people spend approximately 80%-90% of their time indoors, indoor environment quality has a major effect on people's work quality, work efficiency, and even physical and mental health. Staying indoors for an extended period of time also induces the onset of sick building syndrome. Factors influencing indoor air quality include temperature, humidity, and air flow. CO2 content is the most critical chemical indicator of indoor air quality and a crucial indicator determining whether staff density is too high and whether the air change rate is appropriate. Studies have noted that plant evapotranspiration and photosynthesis can induce indoor air flow, remove pollutants, and purify indoor air, which results in an indoor environment comfortable for its occupants. According to the experiment results of Lin et al. [2], which reported that bird nest ferns undergo the most evapotranspiration, this study selected these plants for experimentation. Then, this study referenced the literature and introduced four plant layouts (Type A-D). The size of the experiment space and number of participants were determined. Based on the results, the effects of plant evapotranspiration.