竖直肋柱通道氟碳工质过冷沸腾实验研究
Experimental Study on Subcooled Boiling of Fluorocarbon Coolant in the Vertical Pin-Finned Channel
王爽 1齐迪 1林梅1
作者信息
- 1. 西安交通大学能源与动力工程学院,西安 710049
- 折叠
摘要
为改进大功率电子设备冷却系统,对竖直五边形肋柱通道进行了氟碳工质过冷沸腾实验,热流密度、进口流速、过冷度分别为50～400kW·m-2、0.1～0.9m·S-1、14～29℃.研究发现:随着热流密度的增大,平均传热系数和压降总体上增大,传热因子在进口流速大于0.5 m·s-1时增大;随着进口流速的增大,平均传热系数在中高热流密度下先减小后增大,传热因子均减小;随着过冷度的增大,加热壁面均温总体上降低,平均传热系数均减小,传热因子在进口流速大于0.5 m·s-1时减小.
Abstract
In order to improve the cooling system of high-power electronic equipment,the subcooled boiling experiments of fluorocarbon coolant in the vertical channel with staggered pentagon pin fins are carried out.The heat flux,inlet velocity and subcooled degree are 50～400 kW·m-2,0.1～0.9 m·s-1 and 14～29℃,respectively.The results show that the average heat transfer coefficient and pressure drop generally increase with the increase of heat flux,and the heat transfer factor increases when the inlet velocity is greater than 0.5 m·s-1.With the increase of inlet velocity,the average heat transfer coefficient decreases at first and then increases at middle and high heat fluxes,and the heat transfer factor obviously decreases in the range of heat flux studied.As the subcooled degree increases,both the average wall temperature and average heat transfer coefficient decrease,and the heat transfer factor decreases when the inlet velocity is greater than 0.5 m.s-1.
关键词
过冷沸腾实验/竖直通道/双直角五边形肋柱/传热与压降Key words
subcooled boiling experiment/vertical channel/minute pin-fin/heat transfer and pres-sure drop引用本文复制引用
基金项目
国家自然科学基金资助项目(51876146)
南方电网公司科技项目(ZBKJXM20170058)
出版年
2024
NETL
NSTL
万方数据