| 摘要: |
| 冷链物流中多存在零担物流，为提高物流经济性，保障果蔬冷藏运输品质，本文设计了两种多温区蓄冷式保温箱，筛选87%C8H16O2 （正辛酸）+13%C14H28O2（肉豆蔻酸）与H2O+0.03 g/ml C6H7KO2（山梨酸钾）为蓄冷保温材料。实验测得两种相变材料相变温度分别为7.1、﹣2.5 ℃，相变潜热分别为146.1、256.2 J/g，导热系数分别为0.283 2、0.942 7 W/(m?K)，且两种相变材料经过100次循环后性能稳定，无过冷，相变平台稳定。结合真空绝热保温技术，构建多温区蓄冷保温箱。利用产品供应规范验证设备建立保温箱温度测试系统。实验结果表明：大型多温区蓄冷保温箱温区2可保冷7~9 ℃约13 h，温区3保冷﹣2~0 ℃约14 h；小型多温区蓄冷保温箱温区1保冷7~8 ℃约19 h；温区2保冷0 ℃约16 h。 |
| 关键词: 冷链物流 多温区 蓄冷保温箱 相变材料 |
| DOI： |
| Received:May 15, 2018Revised:July 19, 2018 |
| 基金项目:上海市科委项目（16040501600）、上海海事大学博士创新基金项目（2017ycx081）资助。 |
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| Design and Experimental Study on the Storage Type Insulation Box with Multi-temperature |
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Xu Xiaofeng1, Zhang Xuelai1, Zhou Sunxi1, Wang Yinghui1, Liu Lu1, Liu Sheng2
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| (1.Institute of Cool Storage Technology, Shanghai Maritime University;2.Vegetable Research Center of Beijing Academy of Agriculture and Forestry Sciences) |
| Abstract: |
| Truck logistics (LTL) receives much attention in cold-chain transportation logistics. To improve the economy of logistics and ensure the quality of the refrigerated transport of fruits and vegetables, two types of multi-temperature-zoned refrigerated incubators were designed. 87% C8H16O2 (n-octanoic acid) + 13% C14H28O2 (myristic acid) and H2O + 0.03 g/ml C6H7KO2 (potassium sorbate) were selected as cold storage and heat preservation materials. The experimental results show that the phase transition temperatures, latent heat and thermal conductivity of the two phase-change materials were 7.1 °C and 2.5 °C, 146.1 J/g and 256.2 J/g, 0.2832 W/(m?K) and 0.9427 W/(m?K), respectively. Additionally, the two phase-change materials showed excellent stability from the point of view of thermophysical properties under 100 freezing/melting cycles. Combined with vacuum insulation technology, the temperature test system of the heat preservation box in the multiple temperature zones was established by using the verification equipment of the product supply specification (good supply practice, GSP). The test results show that the large multi-temperature-zoned refrigerated incubator can maintain the temperature at 7–9 °C for approximately 13 h in Zone 2, and at ?2 to 0 °C for approximately 14 h in Zone 3. The small multi-temperature-zoned cold storage box can maintain the temperature at 7–8 °C for approximately 19 h in Zone 1, and at 0 °C for approximately 16 h in Zone 2. |
| Key words: cold chain logistics multi-temperature zone insulation box phase change material |
