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多温区冰箱中采用并联双蒸发器可以有效地提高各间室的温度控制精度和冰箱的能效。冰箱并联双蒸发器运行模式复杂,现有的蒸发器模型不能直接用于并联双蒸发器的动态仿真,需要开发并联双蒸发器动态性能的算法。本文总结了并联双蒸发器所有的运行模式以及模式转换方式;分析不同运行模式下蒸发器中制冷剂的分布状态,建立不同分布状态下质量、能量及其他状态参数的计算公式以及各模式光滑转换准则;基于以上分析开发了用于并联双蒸发器所有运行模式下动态性能的计算方法。最后将本文提出的方法嵌入到成熟的仿真软件中,仿真计算结果与实验数据相对偏差均在10%以内。
Multi-temperature refrigerator with double parallel evaporator can effectively improve the temperature control accuracy of each room and refrigerator energy efficiency. Refrigerator parallel dual evaporator operating mode is complex, the existing evaporator model can not be directly used for parallel dual evaporator dynamic simulation, the need to develop parallel dual evaporator dynamic performance algorithm. This paper summarizes all the operating modes and mode switching modes of the parallel dual evaporator. Analyzes the distribution status of the refrigerant in the evaporator under different operating modes and establishes the formulas for calculating the mass, energy and other status parameters under different operating modes and the smooth transition of each mode Guidelines; based on the above analysis developed for the parallel dual evaporator all the operating modes of the dynamic performance of the calculation. Finally, the method proposed in this paper is embedded into the mature simulation software. The relative deviation between simulation results and experimental data is within 10%.