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气体过冷极限的理论探讨及预测

Theoretical study on and prediction of the supercool limits of gases
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摘要 根据流体的稳定性原理,用化学热力学方法系统探讨了气体的稳定性,发现气体的过冷极限对比温度与对比压力之间存在的普遍规律。结果表明,气体的过冷极限与气体的压力密切相关,压力愈低,气体的液化所需要的温度愈低;液化气体的有效方法是在对气体加压的同时降温。据此发展了预测气体过冷极限的理论方法和应用化工计算的实用方法。 Based on thechemical thermodynamics, the stability of fluid was theoretically studied systematically, and it wasfoundout thatthe universal relation between reduced supercool limit of gas and reduced pressure. The results showed that the supercool limits of gases depended on pressure, the lower the pressure, the lower the supercool limit of gas, and the efficient way to liquefy gas was to increase pressure.A practical method to predict thesupercool limits of gases was proposed.
作者 李勤 王克强
出处 《南都学坛(南阳师专学报)》 1999年第3期62-66,共5页
关键词 过冷气体 气体 预测 稳定性 supercool gas supercool limit metastable state
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