广东工业大学学报 ›› 2020, Vol. 37 ›› Issue (06): 71-77.doi: 10.12052/gdutxb.200014

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水平光滑管内R245fa轴向均匀沸腾传热特性实验研究

涂俊平, 黄计康, 罗向龙, 陈健勇, 杨智, 梁颖宗, 陈颖   

  1. 广东工业大学 材料与能源学院，广东 广州 510006
  • 收稿日期:2020-01-31 出版日期:2020-11-02 发布日期:2020-11-02
  • 通信作者: 罗向龙(1978-)，男，教授，主要研究方向为热力系统集成和优化、传热强化与优化等，E-mail：lxl-det@gdut.edu.cn E-mail:lxl-det@gdut.edu.cn
  • 作者简介:涂俊平(1989-)，男，硕士研究生，主要研究方向为有机工质管内两相流动沸腾传热基础理论研究
  • 基金资助:
    国家自然科学基金资助面上项目（51876043）；国家自然科学基金资助重点项目（51736005）

An Experimental Study of Axial Uniform Boiling Heat Transfer Characteristics of R245fa in Horizontal Smooth Tube

Tu Jun-ping, Huang Ji-kang, Luo Xiang-long, Chen Jian-yong, Yang Zhi, Liang Ying-zong, Chen Ying   

  1. School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
  • Received:2020-01-31 Online:2020-11-02 Published:2020-11-02

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摘要： R245fa是有机朗肯循环系统（Organic Rankine Cycle，ORC）最常用的工质之一，研究其传热流动特性对于指导R245fa的ORC设计和运行有重要价值。搭建了有机工质单管传热流动测试台并开展了水平光滑管内R245fa在90℃下的沸腾传热实验研究。实验获得了平均干度、质量流率对平均流动沸腾传热系数和壁温沿管程分布的影响规律，并分析了原因。将实验结果与3个经典传热关联式预测结果进行了对比，结果显示平均偏差分别为38%、39%、20%。R245fa高温蒸发实验结果可为进一步修正传热关联式提供基础数据库，并用于指导热力循环工程实践。

关键词: 有机朗肯循环, 沸腾传热, 传热关联式, 有机工质

Abstract: R245fa is one of the most commonly working fluids used in organic Rankine cycle (ORC) system. Investigating its heat transfer flow characteristics is of great importance in guiding the design and operation of ORC system. An experimental test rig is established for the test of the in-tube heat transfer and flowing of the organic working fluids. The experimental research for the boiling heat transfer of R245fa in a horizontally smooth tube is conducted. Firstly, the influence of mean quality and mass velocity on the average flow boiling heat transfer coefficient and wall temperature distribution along the tube are obtained and analyzed; then, experimental results are compared with three classical heat transfer correlations prediction results, with an average deviation of 38%, 39%, and 20%. The high temperature evaporation experimental results provide a basic database for the correction of heat transfer correlation and guidance for the engineering design practices.

Key words: organic Rankine cycle, boiling heat transfer, heat transfer correlation, organic working fluids

中图分类号: 

  • TQ021.3
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