De- and rehydration of Ca(OH)2 in a reactor with direct heat transfer for thermo-chemical heat storage. Part A: Experimental results

The influence of gas–solid reaction kinetics in models of thermochemical heat storage under monotonic and cyclic loading

“…Thermochemical reactions can be used for heat storage devices [5][6][7]15,9,24,25]. The choice of reactive material pairs depends, among others, on the temperature range in which the storage system is desired to operate.…”

“…They were kept constant for the entire process duration. All values were based on a standard lab experiment similar to the ones described in [24].…”

“…In order to investigate the influence of the various kinetic models, a lab scale reactor described previously [10,24,8] was modelled. The reactive bed in the cylindrical reactor had a diameter of 0.055 m and a length in the gas flow direction of 0.08 m. To limit computing time, only the reactor midline was represented using a 1D model.…”

Multi-physical continuum models of thermochemical heat storage and transformation in porous media and powder beds—A review

“…Validation of a numerical model similar to the previous one [98] was presented in Schaube et al [87] based on an extensive experimental characterisation of a laboratory scale (60 g of material) CaO/Ca(OH) 2 reactor [177]. The comparison to experimental data concentrated on heat transfer, integral reaction rate and maximum temperatures during the exothermic hydration reaction.…”

“…Based on the model and numerical implementation developed in Nagel et al [88], an open and direct CaO/Ca(OH) 2 reactor was simulated in Shao et al [179] using a one-dimensional model. Constitutive specifications of the model from its general state [88] were included based on experimental data and combined numerical-experimental work of a similar modelling approach [98,87,177]. Both the charging and discharging of the reactor was simulated.…”