CAJ | 학술논문

R32以其良好的热力性能和环保特性成为了极具潜力的替代制冷剂，然而其可燃性制约了它的广泛应用。从可燃性冷媒R32的泄漏扩散对室内安全性影响的角度出发，采用实验研究的方法，探索空调运行条件下制冷剂泄漏规律及空调送风速度和送风角度对室内R32浓度分布的影响。分析结果表明，空调运行时制冷剂泄漏速率随时间逐渐降低，泄漏过程可以分为高速泄漏阶段和低速泄漏阶段；分析空调送风速度和送风角度对室内R32浓度分布的影响，得到不同送风工况下室内R32的浓度分布规律；对制冷剂泄漏条件下室内环境安全性进行评价，结果表明在R32开始泄漏的很短时间内，泄漏口附近出现可燃区域，但可燃区域滞留时间很短，危险性较小。
R32이기량호적열력성능화배보특성성위료겁구잠력적체대제랭제，연이기가연성제약료타적엄범응용。종가연성냉매R32적설루확산대실내안전성영향적각도출발，채용실험연구적방법，탐색공조운행조건하제랭제설루규률급공조송풍속도화송풍각도대실내R32농도분포적영향。분석결과표명，공조운행시제랭제설루속솔수시간축점강저，설루과정가이분위고속설루계단화저속설루계단；분석공조송풍속도화송풍각도대실내R32농도분포적영향，득도불동송풍공황하실내R32적농도분포규률；대제랭제설루조건하실내배경안전성진행평개，결과표명재R32개시설루적흔단시간내，설루구부근출현가연구역，단가연구역체류시간흔단，위험성교소。
With good thermal performance and environmental characteristics, R32 is a candidate for replacement of R22, but it is not adopted because of its slight flammability. This paper, in the view of indoor security, analyzes the leakage variation and the effect of supply air velocity and angle on the concentration distribution when the refrigerant leaks from the indoor unit with the air conditioner operating. The experimental results show that the refrigerant leakage rate decreases with time when the air-conditioning system works. The refrigerant leakage can be classified into two stages, fast leak and slow leak. Indoor environment security is evaluated and the results show that the combustible zone only appears near the leakage hole and its residence time is very short. Thus the risk level of using R32 as the refrigerant of air conditioner is low with the air conditioner operating.