The Thermal Uniformity Performance Analysis of the Cold Shield in the LOX/LCH4 Common Bulkhead and Zero Boil-off Storage System
The common bulkhead tank is one of the most efficient forms for cryogenic propellants,and the non-loss storage technology in the common bulkhead tank is the key issue.A cold shield model designed for the common bulkhead and zero boil-off storage is built based on the liquid oxy-gen/liquid methane common bulkhead and zero boil-off storage experiment system.The coefficient of temperature variation that considers the location variation characteristic and time variation charac-teristic of the temperature during the transient heat transfer and flow process is proposed.Compared with the nonuniformity coefficient,the coefficient of temperature variation is more suitable to eval-uate the thermal uniformity of the cold shield.The results show that the cold shield with coiler performs an excellent thermal uniformity,the maximum coefficient of temperature variation of the cold shield is 3.85％.
cryogenic propellantscommon bulkhead tankthermal uniformitycoefficient of tem-perature variation
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