The importance of indoor air quality has significantly increased after the COVID-19 pandemic. This study analyzed the energy consumption of a ventilation system based on various operating methods considering indoor and outdoor conditions. From March to May 2024, experiments were conducted on ventilation systems installed in a hospital in Incheon, comparing the experimental and control groups. The results showed that using the bypass mode in the experimental group reduced total energy consumption by 25.34% compared to the control group. Additionally, utilizing the air-cleaner mode further reduced energy use. This study demonstrates that optimal use of bypass and air-cleaner modes can enhance energy efficiency. Further research is needed to verify long-term applicability under diverse conditions.

Abstract
1. 서 론
2. 연구방법
3. 연구결과
    3.1 실내 · 외 환경에 따른 작동시간 분석
    3.2 실내외 환경에 따른 환기장치 가동으로인한 전기 사용량 분석
4. 논 의
5. 결 론
후 기
References

• 이주원(Research and Development Team, Kweather Co., Ltd.) | Juwon Lee
• 최부헌(Research and Development Team, Kweather Co., Ltd.) | Boohun Choi Corresponding author