@article{OpitzTreffinger2014, author = {Florian Opitz and Peter Treffinger}, title = {Packed Bed Thermal Energy Storage Model - Generalized Approach and Experimental Validation}, series = {Applied Thermal Engineering}, volume = {73}, number = {1}, publisher = {Elsevier}, issn = {1359-4311}, doi = {10.1016/j.applthermaleng.2014.07.057}, pages = {245 -- 252}, year = {2014}, abstract = {Packed beds serve as thermal energy storages (TES) and heat exchangers (HEX) in different technological applications. In this paper, a general heterogeneous model of heat transfer in packed beds is developed. It is implemented by lumped element formulation in object-oriented modeling language Modelica and is successful validated with data sets taken from two different experiments reported in literature. The main advantages of the introduced model are the general, theory-based approach and the lumped element formulation in Modelica. The first point mentioned above should allow to simulate a packed bed TES/HEX without the necessity applying measured data for model calibration or to apply specific heat transfer correlations with restricted application. The second point establishes the possibility to integrate the TES/HEX model within plant models of larger scale without increasing the simulation time drastically.}, language = {en} }