模拟分析表明，多速压缩机可将稳态运行效率提高4%至14%。通过降低冰箱的循环频率，可以额外节省0.5%到4%的能源。还利用仿真模型对双速压缩机系统毛细管吸入管换热器设计的稳健性的几个方面进行了检验。结果表明，当以高速运行时，针对低速运行进行优化的系统可能具有与原始基本情况下高速系统相同的容量。提出了一种相对简单的控制策略，需要测量循环时间和一个或两个隔间的空气温度。在一定的环境温度范围内，研究了在两种压缩机转速下改变蒸发器或冷凝器风扇转速的影响。确定了一种节能方案: 降低在低环境温度下运行的冰箱的冷凝器风扇速度。通过影响整个系统中制冷剂加注的分配，冷凝器风扇转速的降低降低了蒸发器中的过热，并增加了蒸发器的整体UA。由此产生的蒸发器容量的增加抵消了冷凝器UA的减少，并降低了冰箱的能耗。单位:双关键词:1997年，冰箱，冷冻柜，性能，节能，能耗，计算，变速电机，压缩机引用:研讨会，ASHRAE交易，第103卷，第2部分，波士顿1997

Simulation analyses suggest that a multispeed compressor could increase steady-state operating efficiency by 4% to14%. An additional 0.5% to 4% energy savings might be obtained from the reduction in the cycling frequency of the refrigerator. Several aspects of the robustness of the capillary tube suction line heat exchanger design for the two-speed compressor system were also examined with the simulation model. It was shown that a system optimised for low-speed operation, when operating at the high speed, could have as much capacity as the original base case high-speed system. A relatively simple control strategy was proposed, one that requires measurement of on-cycle time and one or two compartment air temperatures. The effects of varying the speed of the evaporator or condenser fans at both compressor speeds were examined over a range of ambient temperatures. One energy-saving scenario was identified: decreasing the condenser fan speed for refrigerators operating at low ambient temperatures. By affecting the distribution of refrigerant charge throughout the system, the decrease in condenser fan speed reduces the superheat in the evaporator and increases the overall UA of the evaporator. The resulting increase in evaporator capacity more than offsets the decrease in condenser UA and the energy use of the refrigerator is decreased.Units: DualKEYWORDS: year 1997, Refrigerators, freezers, performance, energy conservation, energy consumption, calculating, variable speed motors, compressors