R134a气体水合物蓄冷实验  

Experimental Study on R134a Gas Hydrate as a Cool Storage Medium

作　　者：李夔宁[1] 刘玉东[1] 吴治娟[1] 唐娟[1] 

机构地区：[1]重庆大学动力工程学院,重庆400030

出　　处：《重庆大学学报（自然科学版）》2007年第1期58-60,共3页Journal of Chongqing University

摘　　要：空调蓄冷是实现电网“移峰填谷”的重要手段．为缩短蓄放冷时间，以R134a为工质，在气体水合物蓄冷循环中加入引射器，研究结果表明：引射器增强了水和R134a气体的混合，在引射器内生成了部分水合物晶核．与无引射循环相比，水合物的成核过冷度降低约2-4℃，水合物的生成时间缩短13％～25％，获得了较好的蓄冷效果．并提出“热势”理论对实验现象进行解释，采用引射器后，水合物形成需要的“热势”降低，从而使水合物的成核过冷度和形成时间有明显降低．Cooling storage is an important method in ＂cut peak demand and fill valley demand＂ of power grid. In this experimental research, R134a gas hyrate is used as a cool storage medium and jet pump is added to the cooling storage circulation of gas hydrates to shorten the cooling storage time. The research result shows that： Jet pump strengthened the mixture of water and R134a refrigerant and formed the hyrate nucleus in jet pump. Compared with the circling without jet, the sub-cooled nucleation temperature reduced by 2 -4 ℃, the mixture time of hyrates shortened by 13% -25%. And also, the researcher advances the concept of ＂thermo-potential＂ to analyze the experimental results：the ＂thermo- potential＂ needed for forming gas hyrates was reduced, which caused the sub-cooled temperature and its forming time reduced obviously.

关 键 词：气体水合物 蓄冷 引射器 热势 

分 类 号：TK124[动力工程及工程热物理—工程热物理]