CAJ | 학술논문

建立了使用 R1234yf 制冷剂的微通道平行流冷凝器分布参数模型，采用e-NTU 法对单元体的换热量进行计算。对四种不同的两相流冷凝传热关联式进行比较，同时对冷凝器模型进行实验验证。结果表明，Cavallini等人的两相流冷凝传热关联式应用于R1234yf冷凝器模型可以获得最好的仿真精度，在不同工况下换热量的仿真结果与实验结果的平均误差仅为2.9%，为R1234yf微通道平行流冷凝器的设计及优化提供了理论依据。
건립료사용 R1234yf 제랭제적미통도평행류냉응기분포삼수모형，채용e-NTU 법대단원체적환열량진행계산。대사충불동적량상류냉응전열관련식진행비교，동시대냉응기모형진행실험험증。결과표명，Cavallini등인적량상류냉응전열관련식응용우R1234yf냉응기모형가이획득최호적방진정도，재불동공황하환열량적방진결과여실험결과적평균오차부위2.9%，위R1234yf미통도평행류냉응기적설계급우화제공료이론의거。
A distributed parameter model for the micro-channel parallel flow condenser using R1234yf as working fluid was developed, and theε-NTU method was used to calculate the heat transfer rate. Four two phase flow condensing heat transfer correlations were compared and the model was verified by tests. The results shown that the model using Cavallini’s correlation has the highest precision, and the calculated mean deviation is 2.9%. The model is an effective analytical method for the micro-channel parallel flow condenser development.