摘要
为了探索高压静电场解冻机理,优化解冻工艺,提高解冻效率,通过采用针电极、线电极和板电极在不同的电压下对冰进行了解冻速度对比试验,同时进行了针电极下冰加玻璃罩与不加罩的解冻速度对比试验和线电极下电极间距(电压)、线间距对解冻速度的影响试验。试验结果表明:采用板电极解冻效果不明显,而采用线电极和针电极能获得较大的解冻速度,加玻璃罩后冰的解冻速度明显低于未加罩冰的解冻速度,上下电极间距(电压)和线间距也都对解冻速度有一定影响,最后分析了解冻机理,认为离子风对冰的冲击作用是导致解冻速度增加的主要原因。
In order to explore the thawing mechanism of high voltage electrostatic field,and improve the thawing technique as well as the thawing efficiency of the high voltage electrostatic field,contrast experiments of thawing rate on ice using a needle electrode,a wire electrode and a plate electrode with different voltages had been evaluated in this study,respectively.At the same time,the contrast experiments of thawing rate on ice using a needle electrode with and without glass enclosures and the effects of the wire＇s electrode spacing and the distance between the two neighboring wires on thawing rate were investigated. The results indicated high voltage electrostatic field formed by a plate electrode that couldn＇t improve the thawing rate obviously,while a needle electrode and a wire electrode could improve the thawing rate significantly,the thawing rate of ice with plus glass enclosures was much lower than that without glass enclosures,and the electrode spacing and the distance between the two neighboring wires could effect the thawing rate,and it is thought that corona wind produced by the electrode, which resembles a round jet,impinges and thaws the ice.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2010年第4期347-350,共4页
Transactions of the Chinese Society of Agricultural Engineering
基金
辽宁省教育厅科学研究计划资助(20060188)
大连水产学院科研项目(SY2007044)
关键词
电场
解冻
电极
机理
electric fields
thawing
electrodes
mechanisms
