전열교환형 환기시스템을 이용한 학교건물의 나이트 퍼지 적용 효과 분석

• Published in: 설비공학 논문집, 28(11) Vol. 28; no. 11; pp. 421 - 427
• Main Authors: 김수연(Su-Yeon Kim), 원정관(Jung-kwan Won), 김재형(Jae-Hyung Kim), 송두삼(Doo-Sam Song)
• Format: Journal Article
• Language: Korean
• Published: 대한설비공학회 2016
• Subjects: 기계공학; Night purge(나이트 퍼지); ERV(전열교환형 환기시스템); Thermal storage(축열); Energy saving(에너지 절감); TRNSYS simulation(트랜시스 시뮬레이션)
• ISSN: 1229-6422; 2465-7611
• DOI: 10.6110/KJACR.2016.28.11.421

The indoor temperature of a building increases during the day due to solar radiation. This behavior is significant in school buildings that are finished with high thermal capacity materials. Moreover, in school buildings, windows cannot be opened until the class has finished owing to the security policy of schools. Consequently, classrooms maintain a high temperature throughout the morning. It is thus important to remove the indoor heat before the commencement of classes in order to reduce the cooling energy needed. The Energy Recovery Ventilator (ERV) system is currently being installed in school buildings for ventilating the classrooms. Night-purge control using ERV can be a good strategy to cool the classroom in advance of the operation of the cooling system. However, the optimal operation method of the ERV for night-purge control has not yet been reported. In this study, the effect of night-purge control with ERV in school buildings is analyzed by simulation method. The results of this study showed that the energy saving effect of night-purge control with ERV is most effective in the case of 2 hours operation prior to the commencement of the first lass and when enthalpy based outdoor air cooling is used.