Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
786718 | International Journal of Refrigeration | 2016 | 9 Pages |
•Non-equilibrium Clapeyron curves of chloride–ammonia working pairs are bivariant.•Desorption hysteresis of working pairs is related with desorption enthalpy.•D-A equation and Arrhenius equation are used for simulating sorption performance.•Established models have higher precision for simulating refrigeration performance.
The sorption/desorption characteristics under the non-equilibrium conditions are extremely important for the refrigeration. The experimental test unit is set up, and the p–T–x curves of different working pairs are tested under the non-equilibrium working conditions. The results show that non-equilibrium sorption/desorption processes are related with dual variables rather than a single variable. Then we tested the isobaric sorption/desorption processes of chlorides. Results show that the hysteresis phenomena are related with the desorption enthalpy. Sorption/desorption dynamic models are studied. For sorption process the model is in accord with D-A equation, but for the desorption process both D-A equation and Spinner model should be considered. The Arrhenius equation is used to fit the relation between reaction heat and desorption hysteresis. The results show that the non-equilibrium equations fit the refrigeration performance well, whereas the theoretical equilibrium curves have big error.