Refrigerators are the most energy demanding household devices since they are working 7/24. Improving insulation material is crucial for reducing this demand. One of the promising ways to improve insulation materials is to develop better-blowing agents. In this study, the effects of Liquid Blowing Agent (LBA) and Pentane Blowing Agent (PBA) on whole refrigerator insulation were investigated by experimental and numerical methods. The thermal conductivities of the insulation materials were measured by the hot-wire method. The experimental results show that LBA has a 32.08% lower thermal conductivity regarding conventional polyurethane with PBA. These experimental results utilized as boundary conditions for CFD model of the refrigerator. The numerical analysis suggests that LBA can decrease the refrigerators' heat loss between 5.52% and 19.34%.

冰箱是最耗能的家用设备，因为它们 7/24 全天候工作。改进绝缘材料对于减少这种需求至关重要。改进绝缘材料的一种有前途的方法是开发更好的发泡剂。在这项研究中，液体发泡剂 (LBA) 和戊烷发泡剂 (PBA) 对整个冰箱隔热的影响通过实验和数值方法进行了研究。绝缘材料的导热系数采用热丝法测量。实验结果表明，LBA 的热导率比使用 PBA 的常规聚氨酯低 32.08%。这些实验结果用作冰箱 CFD 模型的边界条件。数值分析表明，LBA 可将冰箱的热损失降低 5.52% 至 19.34%。