摘要
果蔬贮藏保鲜是保持其品质和商品价值的一种重要方法,湿冷保鲜技术有其独特的保鲜优势,具有非常好的应用前景。为此,以湿冷系统中混合换热器内的传热与传质作为研究对象,系统地分析和研究了横流接触式情况下混合换热器的传递性能及流动阻力,通过理论和实验分析,获得了可靠实用的传质系数和过帘压降的数学模型。该数学模型可作为湿冷系统中混合换热器设计的依据。
Storing fruits and vegetables is a very important method for maintaining their qualities and commercial values. The humidicool system has a characteristic superiority for storing high water content and water-losing easily fruits and vegetables, it having a very brilliant future in use. This paper studied on heat and mass transfer in a mixed heat exchanger in the humidicool system. Transfer performance and hydrodynamic resistance in the mixed exchanger were analyzed and researched systemically under the condition of crossflow contact tower. Mathematical models of mass-transfer coefficient and pressure drop of air passing the packings were obtained through experiments, and they can be applied in directing design of a mixed heat exchanger in the humidicool system.
出处
《农机化研究》
北大核心
2007年第3期91-94,共4页
Journal of Agricultural Mechanization Research
基金
国家火炬计划推广项目(1997-)
关键词
食品工程
混合换热器
试验
横流接触
传质系数
压降
数学模型
food industry
humidicool system
experiment
mass-transfer coefficient
packings
mathematical model
