混合量热法测定水合物浆体蓄冷密度

Determination of Hydrate Slurry's Cool-storage Density with Mixing Calorimetry Method

蓄冷密度是表征制冷剂水合物蓄冷性能的重要参数。根据能量守恒定律,设计搭建了混合量热装置,提出了测定具体工作温度区间制冷剂水合物浆体蓄冷密度的方法。利用这一方法测得由R141b/H2O粗混合体系和R141b/H2O微乳液体系制得的水合物浆体在4-12℃的蓄冷密度分别为49.6 kJ/kg和99.1 kJ/kg,约为水在此温度区间蓄冷密度的1.5倍和3倍。相对于水蓄冷而言,可有效减少蓄冷槽的占地空间。

Cool-storage density is one of the most important parameters for evaluating the performance of refrigerant hydrate.A calorimetric device was set up and a mixing calorimetry method was established to measure the cool-storage density of hydrate slurry according to the law of energy conservation.The cool-storage densities of hydrate slurries formed from R141b∕H2 O coarse mixture and R141b∕H2 O microe-mulsion were measured within 4 -12 ℃.The results are 49.6 kj ∕kg and 99.1 kj ∕kg, which are about 1.5 times and 3 times of that of water, respectively.Volume of storage tank could be reduced significantly by utilizing refrigerant hydrate slurry instead of water.