Thermo-physical properties measurements of hygroscopic and reactive material (zeolite 13X) for open adsorptive heat storage operation

The determination of the thermo-physical properties (density, specific heat capacity, and thermal conductivity) hygroscopic reactive solid materials, as those applied in sorption thermochemical storage systems, is not trivial. Lack precision measurement contradictory results make it difficult to enter these parameters programs used for simulating functioning operating scenarios devices. For this reason, different techniques have been compared order improve accuracy measurement. In particular, there was a difference conductivity (about 30%) between hot disc experiments others, well higher dispersion experimental data (MAD > 19%). same found capacity ≈14%). Hence, transient disk method suitable estimating type material. Nevertheless, technique enables good estimation effusivity. were investigated by wire TG-DSC, respectively. A slight increase with temperature observed, but range 70–95 °C, value constant at 913 J kg−1 K−1. methodology validated comparing calculated effusivity values.