摘要
文中对比研究了电晕、介质阻挡以及辉光放电对空气-金属之间对流传热系数的影响作用。通过对加热器功率以及铜板电极温度测量,计算获得在自然对流以及电极间发生放电两种情况下对流传热系数。在气体放电强化传热的作用下对流传热系数获得数倍的增加。在直流电晕放电实验中,当均匀的直流辉光放电产生时,空气-金属之间传热速率获得最大幅度的提高。采用介质阻挡放电在提高空气-金属之间传热速率的同时,放电间隙击穿电压发生显著提高,也使放电在实际应用中更易于控制。
The effects of corona, dielectric barrier discharge and glow discharge on the heat transfer coefficients with a heated copperplate are compared. Heat transfer coefficients for the heated copperplate under free convection conditions with and without gas discharges are obtained by measuring the temperature and the heating power of copperplate. It has been proved that the convection heat transfer coefficients increased by several times with gas discharges. With uniform DC glow discharge at atmosphere pressure, the heat transfer coefficient with the heated copperplate is farthest enhanced compared with those with corona discharge or dielectric barrier discharge. And with the use of dielectric barrier discharge, breakdown voltage is increased largely by the increase of heat transfer rate, which is helpful to avoid breakdown in application.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2006年第3期91-95,共5页
Proceedings of the CSEE
基金
国家自然科学基金项目(50477027)~~
关键词
强化传热
电晕放电
介质阻挡放电
辉光放电
Heat transfer enhancement
Corona discharge
Dielectric barrier discharge
DC glow discharge
