Numerical investigation on transient thermodynamic characteristics of liquid oxygen and liquid methane isothermal common bulkhead storage
A model that combines transient heat transfer,vacuum multilayer insulation,and a zero boil-off system is developed.The thermodynamic characteristics of the multilayer insulation and the storage state in a common bulkhead tank designed for liquid oxygen and liquid methane are examined under self-pressurization and zero boil-off conditions.The impact of an aluminum al-loy common bulkhead on the thermal behavior of liquid oxygen/liquid methane is analyzed.The results demonstrate that the thermal heat leakage is reduced by the board cooling shield with a cryocooler scheme.Furthermore,the aluminum alloy common bulkhead shows excellent perform-ance in stabilizing the storage state of liquid oxygen and liquid methane,which achieves the thermal equilibrium within 20 h,and the temperature and pressure fluctuations in the common bulkhead tank during the zero boil-off process are less than 0.2 K and 2.46 kPa respectively.
zero boil-offliquid oxygenliquid methanecommon bulkhead storagether-modynamic characteristics
万方数据
维普
