Effect of lubricating oil on flow boiling heat transfer of low GWPrefrigerant R-1234yf in a horizontal small-diameter tube

润滑油对低GW预冷剂R-1234yf在水平小直径管内流动沸腾传热的影响

• 批准号: 22560188
• 负责人: SAITOH Shizuo
• 金额: $ 2.5万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22560188/
• 关键词: 低GWP冷媒; 沸騰熱伝達; 冷凍機油; 流動様式

The effects of lubricant oil on flow boiling heat transfer of low GWP refrigerant HFO-1234yf in small-diameter tubes with inner diameter of 2 and 4 mm were experimentally investigated. Experimental results showed that with increasing oil mass fraction, the local heat transfer coefficient increased at lower vapor quality due to intensified foaming phenomena. However, the heat transfer coefficient decreases monotonically with oil mass fraction in high quality region. The forming phenomena and flow patterns at different mass flux and heat flux were illustrated by the visual observation. With increasing oil mass fraction, pressure drop was larger from 1.7 to 4.8 times than that for oil free.

实验研究了润滑油对低GWP值制冷剂HFO-1234yf在内径为2和4mm的小直径管内流动沸腾换热的影响。实验结果表明，随着油质量分数的增加，由于泡沫现象加剧，局部换热系数在蒸气质量较低时增大。而在优质区，传热系数随油质量分数的增加而单调减小。用目测方法说明了不同质量通量和热流密度下的成形现象和流动模式。随着油质量分数的增加，压降比无油时大1.7 ~ 4.8倍。

项目成果

EFFECT OF LUBRICATING OIL ON FLOW BOILING HEAT TRANSFER OF LOW GWP REFRIGERANT HFO-1234yf IN A HORIZONTAL SMALL-DIAMETER TUBE

润滑油对低GWP制冷剂HFO-1234yf在卧式小直径管内流动沸腾传热的影响

• 发表时间: 2012
• 作者: T.Kainuma;S.Sudo;A.Shirai;T.Hayase;Shizuo Saitoh
• 通讯作者: Shizuo Saitoh

低GWP冷媒R-1 234yfの水平細官内沸騰熱伝達における潤滑油の影響

润滑油对低 GWP 制冷剂 R-1 234yf 水平沸腾传热的影响

• 发表时间: 2011
• 作者: S.Sudo;Y.Abe;T.Yano;M.Futamura;斎藤静雄
• 通讯作者: 斎藤静雄

Effect of Lubricating Oil on Flow Boiling Heat Transfer of Low GWP Refrigerant R-1234yf in A HorizontalSmall-Diameter Tube

润滑油对低GWP制冷剂R-1234yf在水平小直径管内流动沸腾传热的影响

• 发表时间: 2012
• 作者: Shizuo Saitoh;Chaobin Dang;Eiji Hihara,
• 通讯作者: Eiji Hihara,

低GWP冷媒 R-1234yf の水平管内沸騰熱伝達における潤滑油の影響

润滑油对低GWP制冷剂R-1234yf水平管道沸腾传热的影响

• 发表时间: 2011
• 作者: 斎藤静雄;党超鋲;飛原英治
• 通讯作者: 飛原英治