SrBr₂水和反応を用いた冷熱生成型ケミカルヒートポンプの未反応核モデルによる反応速度解析

抄録

Here, we propose a chemical heat pump chiller with a SrBr₂ hydration reaction system for utilization of waste heat. The SrBr₂ hydration reaction could recover waste heat in low temperatures ranging from 373 to 353K, and the system showed good potential in terms of the high cooling thermal-storage density. Previous studies have given little information on the reaction characteristics of the SrBr₂ hydration reaction. In this paper, we developed a measuring method for the reaction rate based on the volumetric method. We analyzed the hydration reaction rate with an unreacted-core shell model. In the experiments, the reaction fraction of the SrBr₂ hydration reached 1.0 within 300 sec. By analyzing the hydration reaction rate with the unreacted-core shell model, the SrBr₂ hydration rate was successfully applied to intra particle diffusion controlled. And the activation energy for vapor diffusion in SrBr₂ particle value was calculated to be 26.8 (kJ/mol). The calculation results showed good agreement with those of the experiment as the reaction fraction reached 0.8.