ABSTRACT

While storing cryogens at atmospheric pressure, the key parameters governing the ullage space temperature profile are the heat leak rate, the rate of evaporation of liquid and release of vapor to maintain an isobaric state, and the initial fill-level. An analytical model, based on the basic thermodynamic laws, is proposed. The model is capable of predicting the spatial and temporal variations of temperature in the ullage space. An experimental test rig is designed exclusively to record the vapor space temperature profile with the evaporating liquid nitrogen maintained at atmospheric pressure. Experimental data and the simulated results are in excellent agreement.

中文翻译：

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开放式储罐中冷冻剂的蒸发：实验和分析研究

摘要

在大气压下储存冷冻剂时，控制缺量空间温度曲线的关键参数是热泄漏率、液体蒸发速率和保持等压状态的蒸汽释放速率以及初始填充水平。提出了一种基于基本热力学定律的分析模型。该模型能够预测空缺空间温度的时空变化。专门设计了一个实验测试台，用于记录蒸发液氮保持在大气压下的蒸汽空间温度曲线。实验数据和模拟结果非常吻合。