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近几年来,农村果品冷藏库迅速发展,对果品保鲜、调节市场供应起了积极作用。但也存在不足之处,其中值得提出的是在贮藏工作中,对果品“预冷”这一环节的功能及作用重视不够,而由此引起的损失在贮藏后期明显发生,想要补救为时已晚。为此,我们对某些库作了调查:现今的果品冷藏库绝大部分没有专门的预冷设施,来了货直接送大库冷却。由于大库的冷却通风设备为均匀喷布,不可能集中风量进行预冷,为了加快冷却速度,只有采取加大送风量和送风温差的办法,这必然造成能耗大、干耗大、蒸发器严重结霜、冲霜频繁等现象发生。再因每天货量频繁进入,库内温度上下波动,一般需要半
In recent years, the rapid development of cold storage in rural areas has played an active role in keeping fresh fruits and regulating market supply. However, there are also some shortcomings. Among them, it is worth mentioning that in the storage work, the function and effect of the “precooling” of fruits are not sufficiently emphasized in the storage work, and the losses resulting therefrom obviously occur in the late storage period. It is too late To this end, we conducted a survey of some of the libraries: Most of today’s fruit refrigerators do not have a dedicated pre-cooling facility, and are shipped directly to a large library for cooling. Due to the large library of cooling ventilation equipment for uniform distribution, it is impossible to focus on the amount of air precooling, in order to speed up the cooling rate, only to increase the amount of air supply and air temperature difference approach, which inevitably lead to large energy consumption, Evaporator serious frost, red cream and other phenomena occur frequently. Due to the daily volume of frequent entry, the temperature fluctuations in the warehouse, the general need for half