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| Coolant Flow Measurement of Aircraft Liquid Cooling System Based on Differential Pressure Method |
| FENG Wei-zhong |
| Chinese Flight Test Establishment, Xi′an, Shaanxi 710089, China |
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Abstract The coolant flow in the aircraft liquid cooling system is usually regarded as an important parameter of the assessment of the system performance. With the aid of utilizing the diameter-variable ducts in the liquid cooling system as a throttling element, the coolant flow can be measured by using the differential pressure method. By applying data fitting to the experimental findings obtained from the groud calibration system, the characteristic curves of the coolant flow versus differential pressure for different temperature and pressure values were obtained. Furthermore, the formulate for the correction of calculated coolant flow were gained through linear interpolation. The flight test results indicate that the method is feasible for the measurement of the coolant flow of the aircraft liquid cooling system and, therefore, the problem of inconvenient refitting of flowmeter for the liquid cooling system has been solved.
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［1］ 朱春玲, 宁献文. 用于大功率电子设备的新型液冷环控系统的研究［J］. 南京航空航天大学学报,2005, 37(2): 203-207.
［2］ SAE. AIR1811 Liquid Cooling System［S］. 1997.
［3］ 牛福河, 夏洪儒, 刘国权, 等. 差压式流量计的流量计算及节流件计算(Ⅰ)［J］. 河北轻化工学院学报,1996, 17(4): 40-49.
［4］ 苏彦勋, 梁国伟, 盛健. 流量计量与测试［M］. 北京:机械工业出版社, 2007:129-132.
［5］ 谢代梁, 杨康, 陶姗, 等. 均速管流量计流量系数数值校验方法研究［J］. 实验流体力学, 2010, 24(4): 89-94.
［6］ 吕红涛. 电子设备散热技术探讨［J］. 电子机械工程, 2011, 27(5): 8-11.
［7］ 梁国伟. 流量计量与测试［M］. 北京: 中国计量出版社, 2007: 129-132. |
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2014, Vol. 35 
