混合制冷剂气体水合物生成及融解过程实验研究

In this study, the formation and decomposition of the simple and mixed gas hydrates of CFC alternatives HFC134a, HFC152a and HCFC141b as well as their mixtures were tested with an enclosed cell, which was cooled within a low-temperature water bath. The results show that the formation temperature, pressure and speed of mixed gas hydrates are much better than those of simple gas hydrates. This means that one can get a phase-change cool-storage material which has superior thermodynamic and kinetic properties by using mixed gas hydrate formed by high-and low-pressure (active and inactive) refrigerant blends. HFC134a/HCFC141b and HFC152a/HCFC141b mixed gas hydrates has been found to be good cool storage materials which can be formed and decomposed at moderate pressure and appropriate temperature.