【摘要】 为研究各种物理因素对高压电场干燥速度的影响,提高干燥效率,选用豆腐为干燥物进行高压电场干燥实验.考察了电源电压、温度、上下电极间距、针间距等物理因素对高压电场干燥速度的影响.结果表明:干燥电压与干燥速度具有一定的正相关性,上下电极间距和针电极间距均对干燥速度有一定影响,且存在一最佳的间距;在上下电极间距9 cm、针间距8 cm、干燥电压45 kV时,干燥速度最快;温度的增加可提高干燥速度.更多还原

【Abstract】 Drying experiments on tofu were made with high voltage electric field(HVEF)to study the effects of various physical factors on drying speed of HVEF to improve the drying efficiency.The effects of voltage,tempreture and the distance between the two electrodes as well as the gap between the two neighboring needles were investigated.The results indicate that there is a positive correlation between drying speed and voltage,and the distance between two electrodes and two neighboring needle electrodes have some influence on drying speed,and there exists optimum distance.The drying speed is the fastest with the distance between the two electrodes 9 cm,the distance between the two neighboring needles 8cm and drying voltage 45 kV.Increasing tempreture can improve drying speed.更多还原