高温高湿环境下机载蒸发循环系统动态特性
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(1.南京航空航天大学飞行器环境控制与生命保障工业和信息化部实验室,南京 210016; 2.航空机电系统综合航空科技重点实验室,南京 211106)

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V245.3

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Dynamic Characteristics of Airborne Vapor Cycle System Under Hot and Humid Environment
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(1. Key Laboratory of Aircraft Environment Control and Life Support MIIT, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;2. Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration, Nanjing 211106, China)

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    摘要:

    为探究高温高湿环境对机载蒸发循环系统的影响,基于 AMESim平台构建了系统仿真模型,并结合直升机典型飞行剖面,通过比例积分方法控制压缩机转速,实现此环境下系统性能的动态仿真。结果表明,环境温度或湿度越高,系统制冷量越大、COP越小、座舱达到设定温度所需时间越长。高湿环境还会显著增加蒸发器的制冷剂侧压力损失并降低其换热效率。此外,飞行剖面对系统性能的影响较大。地面待飞阶段和爬升阶段,各特性变化较剧烈;巡航阶段,变化均较小;下降阶段,除 COP持续下降外,其他特性由于飞行速度和环境温度对座舱热负荷的耦合作用先升后降,飞行阶段内存在明显的峰值;地面停车阶段各参数均趋于稳定。

    Abstract:

    In order to explore the influence of hot and humid environment on the airborne vapor cycle system, a simulation model was established based on the AMESim platform. The compressor rotation speed was controlled by the proportional-integral method, and the system characteristics were dynamically simulated under a typical helicopter flight profile. The re?sults show that the ambient temperature and relative humidity have significant influence on the system characteristics. The higher the ambient temperature is or the relative humidity is, the greater the refrigerating capacity is, the smaller the COP is, and the longer it takes to reach the setting temperature. High relative humidity significantly increase the pressure loss of the evaporator and reduce its heat exchange efficiency. Moreover, the flight profile has great influence onsystem characteristics. The system characteristics change dramatically in the ground standby phase and climbing phase,but a little in the cruising phase. In the descending phase, all characteristics increase first and then decrease due to thecoupling effect of flight velocity and ambient temperature on the cabin thermal load, except the COP which keeps declin?ing. Thus, peaks of some characteristics appear in this phase. All characteristics tend to be stable in the ground parkingphase.

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朱子航,许玉,郑文远,孟繁鑫,夏文庆.高温高湿环境下机载蒸发循环系统动态特性[J].海军航空大学学报,2020,35(3):277-284
ZHU Zihang, XU Yu, ZHENG Wenyuan, MENG Fanxin, XIA Wenqing. Dynamic Characteristics of Airborne Vapor Cycle System Under Hot and Humid Environment[J]. JOURNAL OF NAVAL AVIATION UNIVERSITY,2020,35(3):277-284

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  • 在线发布日期: 2020-09-09
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