摘要
热风干燥是农产品加工中的重要单元操作,但目前其能效利用低。近年来干燥领域向节能、高效,并能进一步提高产品质量的高标准要求方向发展。功率超声具有传播方向性强、介质质点振动加速度大等特点,可作为能量的一种有效载体,在强化传热和传质方面表现出突出的优势。论文介绍了气介式大功率超声的设计原理,阐述了超声强化热风干燥设备的系统构成及类型,综述了近年来气介式大功率超声强化热风干燥在含湿物料方面的研究进展,探讨了当前存在问题及今后发展方向。
Hot -air drying is an important unit operation in agriculture products processing, whereas the energy efficiency utilization rate is low currently. Recently, there is growing development trend in hot - air drying towards high standards like energy conservation, high efficiency and further improvement of the product quality. As an effective medium of energy, power ultrasound can be used to enhance mass and heat transfer with outstanding advantages, due toits good propagation directivity and high acceleration of medium principle of high power ultrasound for gas media design,illustrated the system types and composition of enhanced ultrasound hot - air dryers, summarized the study and progress of the enhanced high power ultrasound for gas media ap- plied for drying wet materials, and discussed some existing problems during the research and the future development trends
出处
《中国粮油学报》
EI
CAS
CSCD
北大核心
2013年第3期123-128,共6页
Journal of the Chinese Cereals and Oils Association
基金
国家自然科学基金(11004049)
