应用于冰浆湿冷差压预冷系统的包装箱开孔结构实验研究  

Experimental Study on Opening Structure of the Packaging Box Applied to Ice Slurry Wet Cooling Differential Pressure Precooling System

作　　者：黄逸宸 武卫东[1] 黄华 李想 张华[1] HUANG Yichen;WU Weidong;HUANG Hua;LI Xiang;ZHANG Hua(School of Energy and Power Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;Shanghai Customs Electromechanical Products Testing Technology Center,Shanghai 200135,China)

机构地区：[1]上海理工大学能源与动力工程学院,上海200093 [2]上海海关机电产品检测技术中心,上海200135

出　　处：《制冷技术》2024年第2期53-60,共8页Chinese Journal of Refrigeration Technology

基　　金：国家科技支撑计划(No.2015BAD19B02)。

摘　　要：针对目前差压预冷冷库内湿度低、干耗大的问题,本文提出将冰浆湿冷系统与差压预冷相结合,设计并搭建了一套新型差压式冰浆湿冷预冷实验台。以西红柿为预冷对象,研究了包装箱开孔结构对系统预冷性能和西红柿失重率的影响。结果表明:开孔个数对西红柿预冷时间和预冷速率的影响较小,而开孔率的增加使得预冷时间缩短、预冷速率增加。开孔个数越多且开孔率越大,西红柿在预冷过程中的温度变异系数峰值越小,即预冷均匀性越好;当开孔个数为9个(开孔率20%)、开孔率为25%(开孔个数4个)时,温度变异系数峰值分别为0.004 6和0.003 6。西红柿的失重率随开孔个数的增加而增加、开孔率的增加而降低,且总体失重率均在0.1%左右,远低于传统差压预冷系统中西红柿的失重率。Aiming at the problems of low humidity and high dry consumption in the present differential pressure precooling room,the combination of the ice slurry wet cooling system with the differential pressure precooling is proposed,and a novel differential pressure ice slurry wet precooling test platform is designed and built in this paper.Taking tomatoes as precooling objects,the effects of opening structure of packaging box on the system and tomatoes are studied.The results showed that the number of openings has little effect on the precooling time and the precooling rate of tomato,while the increase of opening ratios shorten the precooling time and increase the precooling rate.The more the number of openings and the greater the opening ratio,the smaller the peak value of the temperature variation coefficient during the precooling process,that is,the better the precooling uniformity.When the number of openings is 9(the opening rate of 20%)and the opening rate is 25%(the number of openings of 4),the peak values of temperature variation coefficient are 0.0046 and 0.0036,respectively.The weight loss ratio of tomatoes increases with the increase of the number of openings and decrease with the increase of the opening ratios.The overall weight loss ratio is about 0.1%,which is much lower than that of tomatoes in the traditional differential pressure precooling system.

关 键 词：差压预冷 湿冷系统 冰浆 包装箱开孔结构 实验研究 

分 类 号：TB611[一般工业技术—制冷工程] TS255.3[轻工技术与工程—农产品加工及贮藏工程]