D111 Development of Multipurpose Chemical Heat Pump for Cold-heat Generation and Low Temperature Condensation using Hydration Reaction

Here, we propose a chemical heat pump chiller with a SrBr 2 hydration reaction system for utilization of waste heat. The SrBr 2 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 SrBr 2 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 SrBr 2 hydration reached 1.0 within 300 sec. By analyzing the hydration reaction rate with the unreacted-core shell model, the SrBr 2 hydration rate was successfully applied to intra particle diffusion controlled. And the activation energy for vapor diffusion in SrBr 2 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.

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Reaction rate analysis with unreacted-core shell model for chemical heat pump cooling mode with SrBr<sub>2</sub> hydration

Esaki

Kuwata

Ichinose

et al. 2017

Transactions of the JSME (In Japanese)

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D111 Development of Multipurpose Chemical Heat Pump for Cold-heat Generation and Low Temperature Condensation using Hydration Reaction

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Reaction rate analysis with unreacted-core shell model for chemical heat pump cooling mode with SrBr<sub>2</sub> hydration

Reaction rate analysis with unreacted-core shell model for chemical heat pump cooling mode with SrBr<sub>2</sub> hydration

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