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정성일(Seongir Cheong),성내리(Naili Sheng),김두현(Doohyun Kim),이재근(Jaekeun Lee),황유진(Yujin Hwang),박종훈(Jonghoon Park),서석장(Seokjang Seo) 대한설비공학회 2009 설비공학 논문집 Vol.21 No.7
In this paper, the effects of ventilation and humidification on thermal comfort and indoor air quality(IAQ) were evaluated in a classroom when a heat pump system was operated in winter. Thermal comfort parameters, such as temperature, relative humidity, globe temperature and air velocity, were measured at 9 points in the classroom. The concentration of CO₂ and total suspended particles(TSP) in the classroom were measured in order to analyze IAQ. Temperature distribution in the classroom was decreased by 2∼5℃ when the ventilation system and the humidifier were operated. When the relative humidity was adjusted to 60% by operating the humidifier and the ventilation system, the predicted mean vote(PMV) in the classroom was within the comfortable range of -0.5~0.5. When the ventilation system was operated, the average concentration of CO₂ and TSP were decreased by 645 ppm and 0.17 mg/㎥, respectively. This paper suggests the humidification and ventilation conditions to maintain the comfortable environment in the school classroom in winter experimentally.