| Title |
A Study on the Emission Characteristics of Formaldehyde and Volatile Organic Compounds in Classroom |
| Authors |
Song Jin-Yong ; Hwang Jung-Ha |
| Keywords |
Indoor Air Quality ; Classroom ; HCHO ; VOCs ; Emission ; Air Change Rate ; Plasma Operation Time |
| Abstract |
In this study, we divided schools into several groups based on the year of building completion. We also categorized their classrooms into general classroom [GC] and special classroom [SC], then we compared and analyzed the pollutantdensity distribution of formaldehyde(HCHO) and volatile organic compounds(VOCs) and the emission quantity of pollutants over time through an on-the-spot survey. In addition, we presented the indoor air change rate and the pollution-reducing effect of the plasma operation time as a method to improve indoor air quality.When we compared general classrooms with special classrooms to detect their pollution densities, the density of special classrooms was higher than that of general classrooms, which suggests the fact that the various appliances and surface-finishing materials of special classrooms affected those densities.A method to protect indoor air from pollutants (1) We installed the air-change system [ALT-1] and changed air, which appliedthe air change rate at 1.3 times/h [AH-13] and 2.0 times/h [AH-20]. As a result, the density of HCHO and VOCs decreased over time, which suggests that the ventilator has an effect on the reduction of pollutant density. (2) We also studied the emission density depending on plasma operation time [ALT-2]. It may be safely said that plasma effectively reduced the emission quantity of indoor pollutants in a short time. |