制冷学报2011，Vol.32Issue(5)：75-78,4.DOI:10.3969/j.issn.0253-4339.2011.05.075
果蔬差压通风预冷冷却均匀性研究
Study on Cooling Uniformity of Fruits and Vegetables in Pressure Precooling
摘要
Abstract
In pressure precooling, cooling uniformity directly affects the fresh quality of fruits and vegetables besides cooling rate. An index to evaluate cooling uniformity based on standard deviation, uniformitya, is put forward in this paper. Pressure precooling device has been established and experimental investigations on golden-pear precooling process were conducted with different conditions such as airflow rates, vent hole shape and size of carton and array style of fruits and vegetables in carton. The relevant parameters affecting cooling uniformity of golden-pears were analyzed. The results imply that the fluid field was good with straight array style of fruits and vegetables in carton. The uniformityσ is about 0.15 under the conditions of cooling airflow rate 1.5~2m/s, circular vent hole and the vent hole size about 45mm.关键词
食品包装与储藏/采后处理/差压预冷/冷却均匀性/送风速度/开孔形状/开孔大小/排列方式Key words
Package and preservation of food/ Postharvest handling/ Pressure precooling/ Cooling uniformity/ Airflow rate/ Vent hole shape/ Vent hole size/ Array style分类
通用工业技术引用本文复制引用
王强,王伟锋,杨静..果蔬差压通风预冷冷却均匀性研究[J].制冷学报,2011,32(5):75-78,4.基金项目
本文受山东省高等学校优秀骨干教师国际合作培养项目经费资助 （）
