不同管径再循环蒸发器的理论计算与实验研究

发布时间：2018-05-29 02:40

  本文选题：再循环蒸发器 + 不同管径　； 参考：《低温与超导》2017年05期

【摘要】：建立均相流模型,对不同管径重力再循环蒸发器进行理论分析,并搭建重力再循环制冷系统试验台,在不同工况下进行对比。以R404A为例,在保温体内空气温度从0℃下降到-25℃情况下,16mm管径蒸发器传热系数从31.4W/m~2·K减少到27.9W/m~2·K,12mm管径蒸发器传热系数从27.2W/m~2·K减少到17.7W/m~2·K;16mm管径蒸发器制冷量从3.11k W升高到4.33k W,12mm管径蒸发器制冷量从2.01k W升高到4.62k W,两者的偏差从33.6%降低到-6.7%,库内温度越低,两者制冷量差距越大。对比结果表明,在低温工况下16mm管径的蒸发器相比12mm管径的蒸发器更适合重力再循环蒸发器。
[Abstract]:A homogeneous phase flow model was established to analyze the gravity recirculation evaporator with different diameter theoretically. The test bench of gravity recirculation refrigeration system was built and compared under different working conditions. Take R404A, for example, The heat transfer coefficient of 16mm tube diameter evaporator decreases from 31.4W/m~2 K to 27.9W/m~2 K 12mm tube diameter evaporator from 0 鈩，

本文编号：1949182