四种制冷剂重力再循环蒸发器的理论计算与实验研究

本文建立了均相流模型,对四种制冷剂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实验台,在不同工况下对比了实验结果与理论计算结果。以R404A为例,当保温体内空气温度从0℃下降到-25℃时,传热系数的理论值与实验值的偏差从15.91%逐渐减小到3.01%,制冷量的理论值与实验值的偏差从14.43%逐渐减小到2.07%。保温体内空气温度越低,偏差的幅度越小,重力再循环制冷系统的运行状态和理论运行状态较吻合。应用该模型对四种制冷剂运行状态进行预测,预测结果表明：相比于其他三种制冷剂,当液柱高度较低时,R410A的传热系数和制冷量最大。...

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Bibliographic Details
Published in制冷学报 Vol. 38; no. 2; pp. 96 - 101
Main Author 阮建文 臧润清 孙志利 赵东
Format Journal Article
LanguageChinese
Published 天津市制冷技术重点实验室天津商业大学冷冻冷藏技术教育部工程研究中心天津市制冷技术工程中心 天津300134 2017
Subjects
再循环蒸发器
实验研究
对比
理论分析
再循环蒸发器
对比
comparison
gravity recirculation evaporator
experimental research
实验研究
理论分析
theoretical analysis
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ISSN0253-4339
DOI10.3969/j.issn.0253-4339.2017.02.096

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Summary:本文建立了均相流模型,对四种制冷剂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实验台,在不同工况下对比了实验结果与理论计算结果。以R404A为例,当保温体内空气温度从0℃下降到-25℃时,传热系数的理论值与实验值的偏差从15.91%逐渐减小到3.01%,制冷量的理论值与实验值的偏差从14.43%逐渐减小到2.07%。保温体内空气温度越低,偏差的幅度越小,重力再循环制冷系统的运行状态和理论运行状态较吻合。应用该模型对四种制冷剂运行状态进行预测,预测结果表明：相比于其他三种制冷剂,当液柱高度较低时,R410A的传热系数和制冷量最大。
Bibliography:Ruan Jianwen, Zang Runqing, Sun Zhili, Zhao Dong （Tianjin Key Laboratory of Refrigeration Technology, Tianjin University of Commerce, Refrigeration Engineering Research Center of Ministry of Education, Tianjin Refrigeration Engineering Technology Center, Tianjin, 300134, China）
11-2182/TB
gravity recireulation evaporator; comparison ; theoretical analysis ; experimental research
The homogeneous phase flow model was established to analyze gravity recirculating evaporators in the condition that four kinds of refrigerants are used respectively. The experimental device of gravity recirculating refrigeration system was set up, and the experimental results were compared with the theoretical calculation results under different working conditions. Taking R404A as an example, when the air temperature in heat insulation decreased from 0 ℃ to - 25℃, the deviation of the experimental value from the theoretical value of the heat transfer coefficient lowers from 15.91% to 3.01% gradually. The deviation of the experimental val
ISSN:0253-4339
DOI:10.3969/j.issn.0253-4339.2017.02.096