TY - JOUR U1 - Wissenschaftlicher Artikel A1 - Opitz, Florian A1 - Treffinger, Peter T1 - Packed Bed Thermal Energy Storage Model - Generalized Approach and Experimental Validation JF - Applied Thermal Engineering N2 - 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. KW - Festbett KW - Energiespeicher Y1 - 2014 SN - 1359-4311 SS - 1359-4311 U6 - https://doi.org/10.1016/j.applthermaleng.2014.07.057 DO - https://doi.org/10.1016/j.applthermaleng.2014.07.057 VL - 73 IS - 1 SP - 245 EP - 252 PB - Elsevier ER -