基于 Python-AMESim 的机载蒸发循环系统仿真与特性分析

To investigate the coupling characteristics of key components in airborne evaporation cycle refrigeration systems and the influence of interface parameters on system performance, a model of airborne evaporation cycle systems was developed based on an Python-AMESim co-simulation platform, with open-loop characteristic studies conducted. Under rated operating conditions, the effects of varying compressor speed, expansion valve opening, low-temperature Polyalphaolefin (PAO) parameters, and high-temperature PAO parameters on critical system parameters such as evaporation pressure and heat exchange capacity were analyzed. Results show that increasing compressor speed leads to higher refrigerant flow rate, reduced evaporation pressure, and decreased coefficient of performance (COP); the system reaches peak heat exchange capacity at expansion valve opening of 40%, with incomplete evaporation occurring when the opening exceeds 50%; the influence of low-temperature PAO flow rate on the system stabilizes after reaching 150 L / min, while inlet temperature elevation significantly enhances performance of the system; the inlet temperature of high-temperature PAO significantly impacts system parameters, where temperature increase causes sharp condensation pressure rise and COP decline. The established co-simulation model integrates AMESim's advantages in physical mechanism modeling accuracy with Python's flexibility in algorithm integration and interactive design, obtaining system characteristics and influence patterns under selected component parameters and operating conditions. This provides theoretical support for optimizing the design and developing the control strategies of airborne thermal management systems.