Experimental study on refrigeration performance and fluid thermal stratification of thermodynamic vent
Experimental study on refrigeration performance and fluid thermal stratification of thermodynamic vent
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热力通风口制冷性能及流体热分层实验研究
DOI：
10.1016/j.ijrefrig.2018.02.022
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发表时间：
2018
影响因子：
3.9
通讯作者：
Cui Li
中科院分区：
文献类型：
--
作者：
Zhan Liu;Yanzhong Li;Gang Lei;Siqi Xia;Cui Li
冷冻剂的长期储存对于未来的太空探索具有重要意义。热力学通风口被认为是实现储罐压力控制和低温燃料高效储存的有效方法。本研究搭建了实验装置，研究了R123热力通风口在初始液高、外部热负荷、压力控制带和循环流量影响下的增压和制冷性能。同时，对流体热分层进行了研究，寻找最佳实验条件。研究结果表明，节流孔板的开度与总循环流管尺寸应良好匹配，才能达到TVS的最佳运行效果。此外，循环流量对罐压控制和流体热分层的发展有直接影响。本研究得出的一些有价值的结论可以应用于航天器的低温推进剂。
Long term storage of cryogens is significant to the future space exploration. Thermodynamic vent is treated as an efficient method to realize the tank pressure control and the efficient storage of cryogenic fuels. In the present study, an experimental rig is built to research the pressurization and refrigeration performance of thermodynamic vent with R123, under the influence factors of initial liquid height, external heat load, pressure control band and circulation flow. Meanwhile, the fluid thermal stratification is investigated for the best experiment condition. The results show that the opening of the throttling orifice and the total circulation flow pipe size should be matched well to achieve the best operation of TVS. Moreover, the circulation flow rate has a direct effect on the tank pressure control and the development of the fluid thermal stratification. Some valuable conclusions drawn from the present study could be applied to cryogenic propellants of space vehicle.