식생기반 바이오필터의 미세먼지, 이산화탄소 개선효과와실내쾌적지수 분석
Particulate Matter and CO2 Improvement Effects by Vegetation-based Bio-filters and the Indoor Comfort Index Analysis
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BACKGROUND: In the month of January 2018, fine dust alerts and warnings were issued 36 times for PM10 and 81 times for PM2.5. Air quality is becoming a serious issue nation-wide. Although interest in air-purifying plants is growing due to the controversy over the risk of chemical substances of regular air-purifying solutions, industrial spread of the plants has been limited due to their efficiency in air-conditioning perspective. METHODS AND RESULTS: This study aims to propose a vegetation-based bio-filter system that can assure total indoor air volume for the efficient application of air-purifying plants. In order to evaluate the quantitative performance of the system, time-series analysis was conducted on air-conditioning performance, indoor air quality, and comfort index improvement effects in a lecture room-style laboratory with 16 persons present in the room. The system provided 4.24 ACH ventilation rate and reduced indoor temperature by 1.6℃ and black bulb temperature by 1.0℃. Relative humidity increased by 24.4% and deteriorated comfort index. However, this seemed to be offset by turbulent flow created from the operation of air blowers. While PM10 was reduced by 39.5% to 22.11㎍/m 3 , CO2 increased up to 1,329ppm. It is interpreted that released CO2 could not be processed because light compensation point was not reached. As for the indoor comfort index, PMV was reduced by 83.6 % and PPD was reduced by 47.0% on average, indicating that indoor space in a comfort range could be created by operating vegetation-based bio-filters. CONCLUSION: The study confirmed that the vegetationbased bio-filter system is effective in lowering indoor temperature and PM10 and has positive effects on creating comfortable indoor space in terms of PMV and PPD.
Abstract
BACKGROUND: In the month of January 2018, fine dust alerts and warnings were issued 36 times for PM10 and 81 times for PM2.5. Air quality is becoming a serious issue nation-wide. Although interest in air-purifying plants is growing due to the controversy over the risk of chemical substances of regular air-purifying solutions, industrial spread of the plants has been limited due to their efficiency in air-conditioning perspective. METHODS AND RESULTS: This study aims to propose a vegetation-based bio-filter system that can assure total indoor air volume for the efficient application of air-purifying plants. In order to evaluate the quantitative performance of the system, time-series analysis was conducted on air-conditioning performance, indoor air quality, and comfort index improvement effects in a lecture room-style laboratory with 16 persons present in the room. The system provided 4.24 ACH ventilation rate and reduced indoor temperature by 1.6℃ and black bulb temperature by 1.0℃. Relative humidity increased by 24.4% and deteriorated comfort index. However, this seemed to be offset by turbulent flow created from the operation of air blowers. While PM10 was reduced by 39.5% to 22.11㎍/m 3 , CO2 increased up to 1,329ppm. It is interpreted that released CO2 could not be processed because light compensation point was not reached. As for the indoor comfort index, PMV was reduced by 83.6 % and PPD was reduced by 47.0% on average, indicating that indoor space in a comfort range could be created by operating vegetation-based bio-filters. CONCLUSION: The study confirmed that the vegetationbased bio-filter system is effective in lowering indoor temperature and PM10 and has positive effects on creating comfortable indoor space in terms of PMV and PPD.
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