刘勖诚¹, 谷波¹(), 曾炜杰¹, 杜仲星¹, 田镇²

1.上海交通大学 制冷与低温工程研究所, 上海 200240
2.上海海事大学 商船学院, 上海 201306

收稿日期:2020-06-01出版日期:2021-09-28发布日期:2021-10-08
通讯作者:谷波E-mail:gubo@sjtu.edu.cn
作者简介:刘勖诚(1997-),男,江西省吉安市人,硕士生,主要研究方向为换热器.
基金资助:国家自然科学基金(51976114);中国博士后科学基金(2019M650084)

Analysis of Frictional Pressure Drop Correlations of Refrigerant Two-Phase Flow in Mini-Channel

LIU Xucheng¹, GU Bo¹(), ZENG Weijie¹, DU Zhongxing¹, TIAN Zhen²

1. Institute of Refrigeration and Cryogenics, Shanghai Jiao Tong University, Shanghai 200240, China
2. Merchant Marine College, Shanghai Maritime University, Shanghai 201306, China

Received:2020-06-01Online:2021-09-28Published:2021-10-08
Contact:GU Bo E-mail:gubo@sjtu.edu.cn

摘要/Abstract

摘要： 针对小通道内两相流动摩擦压降的关联式进行了全面分析,描述关联式之间的继承发展关系,并指出不同关联式之间的创新之处.为了评估各种关联式在小通道中的通用性和精度,建立了一个大型摩擦压降数据库,此数据库在蒸发和冷凝/绝热工况下分别有 1302 和 1576 个数据点.对26种关联式分工况进行评估分析,并发现Sempértegui-Tapia和Kim关联式分别在蒸发工况、冷凝/绝热工况下具有最佳的预测能力,最后提出了关于关联式改进的建议.
关键词: 两相流, 摩擦压降, 关联式, 评估
Abstract: This paper presents a comprehensive analysis of the frictional pressure drop correlations in two-phase flow in mini-channel, describes the relationship of inheritance and development between the correlations, and points out the innovation between different correlations. In order to evaluate the universality and precision of various correlations, it establishes a large frictional pressure drop database, which is specialized for mini-channels. This database includes 1302 and 1576 data points under evaporation and condensation/adiabatic conditions, respectively. Finally, it evaluates and analyzes 26 correlations under different conditions. The results show that the Sempértegui-Tapia and the Kim correlation have the best prediction ability under evaporation conditions and condensation/adiabatic conditions, respectively. This paper provides some advice on the improvement of correlation.
Key words: two-phase flow, frictional pressure drop, correlations, evalution


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