CAJ | 학술논문

为了探索高压电场干燥机理,优化干燥工艺,提高干燥效率,通过采用针电极、线电极和板电极在不同的电压下对豆腐进行了干燥速度对比实验,同时进行了针电极下豆腐加玻璃罩与不加罩的干燥速度对比实验和线电极下电极间距、线间距对于燥速度的影响实验及豆腐的高压电场预处理实验.实验结果表明:采用板电极干燥效果不明显,而采用线电极和针电极能获得较大的干燥速度,加玻璃罩后豆腐的干燥速度远低于未加罩豆腐,上下电极间距和线间距也都对干燥速度有一定影响,高压电场预处理并不能提高豆腐的干燥速度,最后分析了高压电场干燥机理,认为离子风对被干燥物料的冲击作用是导致其干燥速度增加的主要原因.
위료탐색고압전장간조궤리,우화간조공예,제고간조효솔,통과채용침전겁、선전겁화판전겁재불동적전압하대두부진행료간조속도대비실험,동시진행료침전겁하두부가파리조여불가조적간조속도대비실험화선전겁하전겁간거、선간거대우조속도적영향실험급두부적고압전장예처리실험.실험결과표명:채용판전겁간조효과불명현,이채용선전겁화침전겁능획득교대적간조속도,가파리조후두부적간조속도원저우미가조두부,상하전겁간거화선간거야도대간조속도유일정영향,고압전장예처리병불능제고두부적간조속도,최후분석료고압전장간조궤리,인위리자풍대피간조물료적충격작용시도치기간조속도증가적주요원인.
In order to explore the drying mechanism and improve the drying efficiency of high voltage electric field, the drying rate of tofu using a needle electrode, a wire electrode and a plate electrode under different voltages was comparatively studied, respectively.At the same time, the drying rate of tofu using needle electrode with glass en-closure and counterpart without it and the effect of the wire's electrode spacing and the distance between the two neighboring wires on drying rate were comparatively investigated.The results indicate that high voltage electric field formed by a plate electrode that cannot improve the drying rate obviously, while a needle electrode and a wire elec-trode can improve the drying rate significantly, the drying rate of tofu with plus glass enclosures is much lower than that without glass enclosures, and the electrode spacing and the distance between the two neighboring wires can af-fect the drying rate, the high electric field pretreatment fails to improve the drying rate of the tofu.At last, the dr-ying mechanism was analyzed.The impact of ion wind on the drying material played a major role in increasing the drying rate.