| Citation: | ZHOU Zhenjun，LIU Xin，LIU Chen，et al.Analysis of JT refrigeration influence on temperature control of mainstream liquid in cryogenic storage tank［J］.Journal of Aerospace Power，2022，37（9）：2001‑2008. doi: 10.13224/j.cnki.jasp.20210212
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In order to study the Joule Thomson （JT） characteristics of cryogenic liquid and the influence of the introduction of cooling capacity on the temperature control of the mainstream in tank，the mechanism of the throttling dryness and volume void fraction on the heat transfer of the fluid was analyzed，which showed that the gas with small mass occupied most of the space volume；The test platform of throttling performance was established，and the experiment of refrigeration was carried out with liquid nitrogen as the working medium when the pressure before throttle ranged from 0.3-0.37 MPa，the temperature drop reached 11.3-14.2 K.In the thermodynamic vent system （TVS），the average temperature drop of the fluid involved in throttling was 6.5 K，and the tank pressure was controlled within 150-160 kPa.The introduction of cooling capacity made the temperature of mainstream decrease in a wavy trend，and the cooling effect at the thermal stratification of the gas‑liquid interface was more obvious.
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