TY - JOUR
T1 - Thermal energy storage in porous materials with adsorption and desorption of moisture
AU - Pal, Souvik
AU - Hajj, Muhammad R.
AU - Wong, William P.
AU - Puri, Ishwar K.
PY - 2014
Y1 - 2014
N2 - Sensible and latent heat that is stored in materials cannot be typically used over long periods, such as seasons, due to heat losses. Storing thermal energy in the form of chemical potential circumvents this issue. We present a numerical model capable of simulating adsorption/desorption based energy release/storage processes for given input material properties, operating conditions and geometric configurations. Since an analysis of flow in porous media can involve a multitude of empirical constants, making the design tool less general, our approach is more fundamental. The model is based on the species transport equation to characterize the adsorption and desorption in a porous solid and is validated against an experimental study. Without requiring microscopic details of pore structure, it provides the spatial and temporal variations in moisture concentration and temperature during the adsorption and desorption processes in the porous material. Through parametric variations of input conditions, the proposed model/tool can be used to identify adsorbent-adsorbate pairs for optimal performance.
AB - Sensible and latent heat that is stored in materials cannot be typically used over long periods, such as seasons, due to heat losses. Storing thermal energy in the form of chemical potential circumvents this issue. We present a numerical model capable of simulating adsorption/desorption based energy release/storage processes for given input material properties, operating conditions and geometric configurations. Since an analysis of flow in porous media can involve a multitude of empirical constants, making the design tool less general, our approach is more fundamental. The model is based on the species transport equation to characterize the adsorption and desorption in a porous solid and is validated against an experimental study. Without requiring microscopic details of pore structure, it provides the spatial and temporal variations in moisture concentration and temperature during the adsorption and desorption processes in the porous material. Through parametric variations of input conditions, the proposed model/tool can be used to identify adsorbent-adsorbate pairs for optimal performance.
KW - Moisture adsorption and desorption
KW - Species transport model
KW - Thermal energy storage
KW - Thermochemical energy
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U2 - 10.1016/j.ijheatmasstransfer.2013.10.023
DO - 10.1016/j.ijheatmasstransfer.2013.10.023
M3 - Article
AN - SCOPUS:84887758972
SN - 0017-9310
VL - 69
SP - 285
EP - 292
JO - International Journal of Heat and Mass Transfer
JF - International Journal of Heat and Mass Transfer
ER -