In this study, the calorimeter was used to experimentally investigate the cooling characteristics of the variable A/C system according to changes in loading time and outdoor dry bulb temperature. The cooling capacity, COP and compressor discharge temperature were measured while changing the loading time of the compressor. To develop the correlation for compressor discharge temperature, loading time, indoor and outdoor dry bulb temperatures, evaporation and condensation temperatures were considered as operating variables. As the loading time increased, the cooling capacity and COP increased. The cooling capacity increased linearly with the loading time. The COP increased more at low loading times than at high loading times. The change in condensing temperature according to the loading time had a small temperature fluctuation range, and the evaporation temperature decreased linearly. The compressor discharge temperature increased linearly with the loading time and outdoor temperature, and the maximum deviation between the experimental value and the correlation was within about 2℃.

Abstract
1. 서 론
2. 실험방법 및 장치
3. 실험 결과
    3.1 공조시스템 냉방 성능평가
    3.2 냉방운전의 압축기 토출온도 상관식
4. 결 론
References

• 이창수(Department of Mechanical Engineering, Sunmoon University, Graduated student) | Changsoo Lee
• 권영철(Department of Mechanical Engineering, Sunmoon University) | Young-Chul Kwon Corresponding author