In this work a fast numerical model for sizing calculations
of thermocline with filler storage systems, implemented in
Matlab®, is presented. With this model, two sizing approaches
are used. The first approach is considered as the classic
approach, based on regained exergy after a full storage cycle,
whilst for the second approach, the storage model is coupled
with a simplified solar field and power block model. In the
latter case, produced electric power after a full storage cycle is
used for the rating of the storage configurations. Both
approaches show a high efficiency of the thermocline with filler
system. The comparison of both approaches show the influence
of fluctuating boundary conditions on the cyclic behavior of the
storage system and eventually, its sizing results.
Papers presented at the 13th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Portoroz, Slovenia on 17-19 July 2017 .