含油金刚石纳米制冷剂的核态池沸腾换热特性

上海交通大学学报（自然版） ›› 2011, Vol. 45 ›› Issue (06): 861-865.

含油金刚石纳米制冷剂的核态池沸腾换热特性

庄大伟1，彭浩2，胡海涛1，丁国良1，朱禹1

（1.上海交通大学制冷与低温工程研究所，上海 200240； 2. 中国科学院微重力重点实验室（国家微重力实验室），北京 100190）

收稿日期:2010-10-13 出版日期:2011-06-29 发布日期:2011-06-29
基金资助:
国家自然科学基金资助项目（50976065）

Nucleate Pool Boiling Heat Transfer Characteristics of Refrigerant/Oil Mixture with Diamond Nanoparticles

ZHUANG Da-Wei-1, PENG Hao-2, HU Hai-Tao-1, DING Guo-Liang-1, ZHU Yu-1

(1. Institute of Refrigeration and Cryogenics Engineering, Shanghai Jiaotong University, Shanghai 200240, China; 2. Key Laboratory of Microgravity (National Microgravity Laboratory), Chinese Academy of Sciences, Beijing 100190, China)

Received:2010-10-13 Online:2011-06-29 Published:2011-06-29

摘要/Abstract

摘要： 研究了含油金刚石纳米制冷剂（即由制冷剂R113、润滑油VG68和金刚石纳米颗粒组成的纳米流体）的核态池沸腾换热特性，分析了金刚石纳米颗粒对含油制冷剂核态池沸腾换热的影响.实验中饱和压力为101.3 kPa；热流密度为10~80 kW/m2；纳米油(纳米颗粒和润滑油的混合物)的质量分数为0~5%；在纳米油中金刚石纳米颗粒的质量分数为0~15%.实验结果表明：金刚石纳米颗粒增强了含油制冷剂的池沸腾换热，在测试工况下换热系数最大可增加63.4%，并且增加幅度随纳米油中纳米颗粒质量分数的增加而增加，随纳米油质量分数的降低而增加.开发了含油纳米制冷剂池沸腾换热关联式，关联式预测值与94%的实验数据偏差在±20%以内.

关键词: 核态池沸腾, 润滑油, 纳米颗粒, 制冷剂, 关联式

Abstract: Nucleate pool boiling heat transfer characteristics of refrigerant/oil mixture with diamond nanoparticles were investigated experimentally. The refrigerant is R113 and the oil is VG68. The experimental conditions include a saturation pressure of 101.3 kPa, heat fluxes from 10 to 80 kW·m-2, nanoparticles concentrations in the nanoparticles/oil suspension from 0 to 15 %, and nanoparticles/oil suspension concentrations from 0 to 5 %. The experimental results indicate that the nucleate pool boiling heat transfer coefficient of R113/oil mixture with diamond nanoparticles is larger than that of R113/oil mixture by maximum of 63.4% under the present experimental conditions, and the enhancement increases with the increase of nanoparticles concentration in the nanoparticles/oil suspension and decreases with the increase of nanoparticles/oil suspension concentration. A correlation for predicting the nucleate pool boiling heat transfer coefficient of refrigerant/oil mixture with nanoparticles was proposed. The predicted values of the new correlation can agree with 94% of the experimental data of R113/oil mixture with diamond nanoparticles in the present study within the deviation of ±20%.

Key words: nucleate pool boiling, oil, nano-particle, refrigerant, correlation

中图分类号:

TK124

庄大伟1, 彭浩2, 胡海涛1, 丁国良1, 朱禹1. 含油金刚石纳米制冷剂的核态池沸腾换热特性[J]. 上海交通大学学报（自然版）, 2011, 45(06): 861-865.

ZHUANG Da-Wei-1, PENG Hao-2, HU Hai-Tao-1, DING Guo-Liang-1, ZHU Yu-1. Nucleate Pool Boiling Heat Transfer Characteristics of Refrigerant/Oil Mixture with Diamond Nanoparticles[J]. Journal of Shanghai Jiaotong University, 2011, 45(06): 861-865.

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