| 脉冲热负荷下相变蓄热对蒸发循环制冷性能的影响 |
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| 引用本文： | 张镜洋,李文通,张若骥,罗欣洋.脉冲热负荷下相变蓄热对蒸发循环制冷性能的影响[J].宇航学报,2022,43(3):383-392. |
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| 作者姓名： | 张镜洋 李文通 张若骥 罗欣洋 |
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| 作者单位： | 1. 南京航空航天大学航天学院，南京 211106； 2. 南京航空航天大学能源与动力学院，南京 210016；3. 航空机电系统综合航空科技重点实验室，南京 211106 |
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| 基金项目： | 航空基金（201928052008） |
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| 摘 要： | 针对激光器等短时大功率器件的温度控制问题，提出了基于相变蓄热与蒸发循环制冷的热控制方法。以峰值热流密度为10 6 W/m 2 的激光器为控温对象，建立相变蓄热与蒸发循环制冷耦合的仿真模型，通过数值仿真对比研究了有无相变蓄热器及不同相变蓄热器耦合位置、压缩机转速及热负荷占空比情况下热源的温度波动幅度与制冷系统的制冷效率。结果表明，在研究参数范围内，蒸发循环回路的压缩机出口、冷凝器出口、蒸发器出口位置分别耦合相变蓄热器均可使系统的制冷效率提高，热源温度波动幅度降低；压缩机转速越大，相变蓄热对系统控温性能的提升程度越显著，转速为9000 r/min时，温度波动系数最高可降低9.4%；热负荷占空比越大，相变蓄热对系统控温性能与制冷效率的提升程度均更加显著，占空比为1/2时，温度波动系数最高可降低11.7%，制冷系数COP平均值最高可提升18.1%；同一工况下，相变蓄热器耦合在冷凝器出口时制冷效率最高，耦合在蒸发器出口时控温性能最好。
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| 关 键 词： | 相变蓄热 蒸发循环制冷 脉冲热负荷 激光器 |
| 收稿时间： | 2021-03-16 |
Influence of Phase Change Thermal Storage on Performance of Vapor cycle Refrigeration under Pulsed Heat Load |
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| ZHANG Jing yang,LI Wen tong,ZHANG Ruo ji,LUO Xin yang.Influence of Phase Change Thermal Storage on Performance of Vapor cycle Refrigeration under Pulsed Heat Load[J].Journal of Astronautics,2022,43(3):383-392. |
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| Authors: | ZHANG Jing yang LI Wen tong ZHANG Ruo ji LUO Xin yang |
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| Affiliation: | 1. College of Astronautics, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China;2. College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;3. Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration, Nanjing 211106, China |
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| Abstract: | Aiming at the temperature control problem of laser and other high power devices, a thermal control method based on phase change heat storage and vapor cycle refrigeration is proposed. A laser with peak heat flux of 10 6 W/mn2 is taken as the temperature control object, and the coupled simulation model of phase change heat storage and vapor cycle refrigeration is established. The temperature fluctuation amplitude of heat source and refrigeration efficiency of refrigeration system under different working conditions are compared by numerical simulation. The results show that within the range of parameters studied in this paper, the refrigeration efficiency of refrigeration system can be improved and the fluctuation range of heat source temperature can be reduced by coupling phase change regenerator at the outlet of the compressor, the condenser, and the evaporator, respectively. The larger the compressor speed, the more significant the improvement effect of phase change heat storage on temperature control performance, when the compressor speed is 9000 r/min, the temperature fluctuation coefficient can be reduced by up to 9.4%. The larger the duty cycle of heat load, the more significant the improvement effect of phase change heat storage on the temperature control performance and refrigeration efficiency, when the duty cycle of heat load is 1/2, the temperature fluctuation coefficient can be reduced by up to 11.7%, and the average coefficient of performance (COP) can be increased by up to 18.1%. Under the same working condition, the highest refrigeration efficiency will be obtained by coupling phase change regenerator at the outlet of the condenser, and the best temperature control performance will be obtained by coupling phase change regenerator at the outlet of the evaporator. |
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| Keywords: | Phase change thermal storage Vapor cycle refrigeration Pulsed heat load Laser |
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