摘要
为了建立利用自然冷源蓄冰的数学模型,通过对不同条件下槽内水的相变传热过程的测定和分析,得出了冰层厚度与外界气温之间的关系。还通过对模拟自然冷源果蔬贮藏库内制冰过程的测定和分析,确定了库内各点的温度分布,得到了水箱在库内的结冰规律,并对整个库的热平衡进行了计算。对试验装置的特性进行了测定和评价。
To set up a mathematical model of storing cooling to make ice by utiliz- ing natural cooling resource,this experiment studies on finding out the law of rela- tionship between ice thickness and outside temperture by means of surveging and analyzing the phase change and heat transfer process of water in the trough under different conditions;by way of surveying and analyzing making ice process in ice- shelter in storage by utilizing natural cooling resource,define the distribation of in- side temperature,and the law of being frozen process of water in box.Moreover, heat transfer of the storage is calculated and properties of experimental facilities are surveyed and evaluated.
基金
国家自然科学基金
关键词
自然冷源
相变传热
果蔬贮藏
natural cooling resource
phase change and heat transfer
fruits and vegetables storage
