摘要: |
可装卸式蓄冷保温箱组装、拆卸方便,是蓄冷保温箱发展的趋势。本文实验研究了平菇的冷链运输效果,测定箱内空气温度、平菇中心温度和蓄冷剂温度变化,计算可装卸蓄冷箱冷链运输过程缝隙漏热率,每隔30 h对平菇取样进行感官评定,测定其营养指标变化。结果表明:当环境温度25 ℃时,56 h后蓄冷剂完全液化,比预计时间少8 h,表明蓄冷剂需求量的估算值偏小,可以使用系数修正法予以调整;可装卸式蓄冷保温箱缝隙漏热率达到12.97%,缝隙漏热量占比大,应优化组装工艺;实验60 h与0 h相比,感官评分下降3.53%,可溶性固形物含量下降5.9%;可溶性蛋白质含量下降4.2%;维生素C含量下降9.96%,实验过程平菇商品价值、营养价值变化不大。 |
关键词: 可装卸 蓄冷保温箱 漏热量 冷链运输 |
DOI: |
投稿时间:2016-11-17
|
基金项目:“十二五”国家科技支撑计划重点项目(2015BAD19B02)。 |
|
Effect of Cold Chain Transportation on Assemble-able Cold-storage Incubator |
Zhang Qiuyu1, Zang Runqing1, Liu Sheng2, Li Yan2, Fan Zhongyang2, Sun Lijun2
|
(1.Tianjin University of Commerce, Refrigeration Engineering Research Center of Ministry of Education, Tianjin Refrigeration Engineering Technology Center;2.Vegetable Research Center of Beijing Academy of Agriculture and Forestry Sciences, National Engineering Research Center for Vegetables) |
Abstract: |
Cold-storage incubators that are easy to disassemble and assemble may become the development trend of the future. An experiment on the effect of cold-chain transportation was performed on an assemble-able cold-storage incubator with pleurotus ostreatus (oyster mushrooms). During the experiment, the temperatures of the air, the center of the pleurotus ostreatus, and the cold-storage agent in the incubator were tested; then, the heat-leakage rate from the gaps in the cold-storage incubator assembly was determined. Meanwhile, the pleurotus ostreatus were sampled every 30 hours to make a sensory evaluation and the nutritional indicators were tested to judge the effect of the cold-chain transportation. The results show that, in an ambient temperature of 25 ℃, it takes 56 hours for the coolant to completely liquefy, which is eight hours less than that estimated. This means that the required coolant amount, which can be adjusted by a factor-correction method, was actually larger than the estimation. Moreover, the heat-leakage rate from the gap increased to 12.97%, which was thought to be a bit larger proportion. Thus, it is necessary to improve the assembly process of the assemble-able cold-storage incubator. In addition, the commodity and nutritional value of pleurotus ostreatus are rarely reduced during cold storage. When the values after 60 h were compared with those at the beginning, the sensory evaluation scores, the soluble-solids content, the soluble-protein content and the vitamin C content had dropped by 3.53%, 5.9%, 4.2% and 9.96% respectively. |
Key words: assembly cold storage incubator heat leakage cold chain transportation |