摘要
把由蒸馏水制成的 - 18℃的冰放在针 -盘组成的不均匀电场中 ,在室温条件下进行了融化对比实验 ,结果表明 :施加电场后冰的融化速度高于对照的 ,冰全部融化成水的时间也少于对照的。在融化过程中 ,冰的形状出现明显的差异 :施加电场后冰块的上表面出现下凹 ,并且冰块贮存了负电荷。初步探讨了其原因 ,但机理有待于进一步研究。
Putting ice made of the distilled water which temperature was -18℃ in the nonuniform high electric field composed of a single point to plate, the experiment of ice melting was completed under the condition of the room temperature. The results of the experiments indicated that the rate of the ice melting by supplying the high voltage electric field was higher than that of the control and the time spent in changing the ice into the water was shorter than that of the control. In the melting process, the shape of the unmelted ice showed obvious difference, the top of the ice in the high voltage electric field was concave and this ice was electricized with negative charges. The reasons was briefly analyzed, however, the principal mechanism needs to be studied further in the future.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2001年第5期131-134,共4页
Transactions of the Chinese Society of Agricultural Engineering
基金
国家自然科学基金资助课题 ( 396 70 5 2 4)部分内容
关键词
高压电场
冰
融化
食品加工
high voltage electric field
ice melting
