The O2 and CO2 concentrations in controlled atmosphere (CA) rooms are determined by the respiration of produce like apples and the airtightness of the CA room, with gas in the CA room controlled by O2 and CO2 removal as well as respiration (CO2 increase and O2 decrease). The purpose of this study was to evaluate the validity of the gas exchange model for O2 removal, CO2 removal, the rate of O2 decrease and CO2 increase by respiration of apples, and airtightness of the CA room. It took 17.5 hours to reduce O2 concentration from 20.9% to 2.0% after loading 4.3 tons of Fuji apples into the CA room, which was 4.2 hours longer than the 13.3 hours of the model formula. After the CO2 concentration rose to 0.5% due to respiration, it took 4.7 hours to lower the CO2 concentration to 0.2%, which was 0.6 hours longer than that of the model equation. The rate of CO2 increase by respiration was 0.021%/ h, which was similar to the model equation (0.017%/h). Also after 4.7 hours, the O2 concentration decreased by 0.1% which was also in line with the model equation (0.13%/h).

Abstract
 서 론
 재료 및 방법
  CA저장고
  CA저장 사과시료
  CA저장고 기밀시험
  CA저장고 공기백 설계
  CA저장고의 O2및 CO2변화 예측식
 결과 및 고찰
  CA저장고의 내부 환경변화에 따른 기밀성능
  CA저장고의 O2가스 제거
  CA저장고의 CO2가스 제거
  CA저장고의 O2농도 변화
  CA저장고의 CO2농도 변화
 요 약
 감사의 글
 References

• 박석호(농촌진흥청 국립농업과학원 농업공학부, Department of Agricultural Engineering, National Institute of Agricultural Sciences) | Seok Ho Park Corresponding author
• 박천완(농촌진흥청 국립농업과학원 농업공학부, Department of Agricultural Engineering, National Institute of Agricultural Sciences) | Cheon Wan Park
• 김미나(농촌진흥청 국립농업과학원 농업공학부, Department of Agricultural Engineering, National Institute of Agricultural Sciences) | Mi Na Kim
• 최승영(농촌진흥청 국립농업과학원 농업공학부, Department of Agricultural Engineering, National Institute of Agricultural Sciences) | Seung Young Choi
• 최동수(농촌진흥청 국립농업과학원 농업공학부, Department of Agricultural Engineering, National Institute of Agricultural Sciences) | Dong Soo Choi
• 김진세(농촌진흥청 국립농업과학원 농업공학부, Department of Agricultural Engineering, National Institute of Agricultural Sciences) | Jin Se Kim
• 김용훈(농촌진흥청 국립농업과학원 농업공학부, Department of Agricultural Engineering, National Institute of Agricultural Sciences) | Yong Hun Kim
• 이수장(농촌진흥청 국립농업과학원 농업공학부, Department of Agricultural Engineering, National Institute of Agricultural Sciences) | Su Jang Lee