In this study, a method to evaluate the environmental effects of household refrigerators is newly developed in terms of life cycle climate performance (LCCP). The energy consumption model of the refrigerator is developed with three types of typical single evaporator refrigerators. The operation ratio of the evaporators, which is critical for calculating the energy consumption of dual evaporator refrigerators, is determined using experimental results of serial, bypass, and parallel-circuit cycle refrigerators. The LCCP results show that the system performance and equipment manufacturing emissions are dominant factors in lifetime CO₂ emissions. Therefore, energy- and material-related factors, such as refrigerator cycle options, refrigerator material, insulation, and power sources, are primarily investigated. For cycle options, CO₂ emissions can be reduced by 14.7% using a two-stage cycle. For condenser materials, CO₂ emissions can be reduced by 2% to 2.5% using aluminum instead of steel. For insulation, the total emissions can be reduced by up to 7.7% by applying vacuum insulation panels on each side of the refrigerator. When 20% renewable energy is supplied, the total emissions are expected to be reduced by 13% in the baseline, 19.9% in the parallel-circuit cycle, and 26% in the two-stage cycle.

在这项研究中，根据生命周期气候性能（LCCP），新开发了一种评估家用冰箱对环境的影响的方法。冰箱的能耗模型是用三种典型的单蒸发器冰箱开发的。蒸发器的运行率对于计算双蒸发器制冷机的能耗至关重要，它是根据串联，旁路和并联循环制冷机的实验结果确定的。LCCP结果表明，系统性能和设备制造排放是生命周期内CO _2的主要因素排放。因此，主要研究与能源和材料相关的因素，例如冰箱循环选项，冰箱材料，绝缘和电源。对于循环选项，使用两阶段循环可以将CO ₂排放量减少14.7％。对于冷凝器材料，使用铝代替钢可以将CO ₂排放降低2％至2.5％。对于绝热，通过在冰箱的每一侧上安装真空绝热板，可以将总排放量减少多达7.7％。当提供20％的可再生能源时，预计总排放量将在基准线减少13％，在并联电路循环中减少19.9％，在两级循环中减少26％。