天然气水合物孔底冷冻取样器室内冷冻试验能量计算与分析

Energy Calculation and Analysis on Laboratory Freezing Experiment of Freezing Sampler for Gas Hydrate

针对以干冰作为冷冻剂、酒精作为载冷剂的天然气水合物孔底冷冻取样方法,提出干冰与酒精用量的计算方法。计算出在干冰双层保冷的方式下,干冰与酒精的用量。通过实验与计算机模拟分析,验证该计算方法的可行性。针对试验过程中出现的问题,提出对试验装置的改进,为取样器的设计提供参考。

According to freezing sampling method of gas hydrate with dry ice as refrigerant and alcohol as cooling agent, calculation was given for dry ice and alcohol consumption, and the consumption of dry ice and alcohol with the double-layer insulation were calculated out. The feasibility of the calculation method was verified through experiments and computer sim- ulations. Considering the problems in the experiment, some improvement was suggested to the experimental device to pro- vide a reference to sampler design.