A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
CFD-based reduced model for the simulation of thermocline thermal energy storage systems
Thermocline thermal storages are widely used in energy systems. Computational Fluid Dynamic (CFD) can be used for an accurate simulation of the physical phenomenon but its implementation in system-level annual simulations is hardly possible because of the huge computational time required. The present paper proposes a novel approach for the utilization of CFD simulation results in system-level annual simulations and optimizations. An analytical function able to represent the dimensionless vertical temperature profile inside the tank is parameterized statistically using the results of multiple simulations of a CFD model, which have been previously validated with experimental data. The reduced model obtained is then compared to other CFD simulations under highly variable conditions, showing a satisfactory degree of agreement (the mean absolute error and the error standard deviation are calculated to be 1.52 K and 1.93 K respectively). Furthermore, it is demonstrated that this approach can be conveniently adopted for the modeling of a wide range of systems with a single tank thermal energy storage, from Concentrated Solar Power to District Heating.
CFD-based reduced model for the simulation of thermocline thermal energy storage systems
Thermocline thermal storages are widely used in energy systems. Computational Fluid Dynamic (CFD) can be used for an accurate simulation of the physical phenomenon but its implementation in system-level annual simulations is hardly possible because of the huge computational time required. The present paper proposes a novel approach for the utilization of CFD simulation results in system-level annual simulations and optimizations. An analytical function able to represent the dimensionless vertical temperature profile inside the tank is parameterized statistically using the results of multiple simulations of a CFD model, which have been previously validated with experimental data. The reduced model obtained is then compared to other CFD simulations under highly variable conditions, showing a satisfactory degree of agreement (the mean absolute error and the error standard deviation are calculated to be 1.52 K and 1.93 K respectively). Furthermore, it is demonstrated that this approach can be conveniently adopted for the modeling of a wide range of systems with a single tank thermal energy storage, from Concentrated Solar Power to District Heating.
CFD-based reduced model for the simulation of thermocline thermal energy storage systems
PIZZOLATO, ALBERTO (author) / Filippo Donato (author) / VERDA, Vittorio (author) / SANTARELLI, MASSIMO (author) / Pizzolato, Alberto / Filippo, Donato / Verda, Vittorio / Santarelli, Massimo
2015-01-01
Article (Journal)
Electronic Resource
English
DDC:
690
Numerical simulation of single media thermocline based storage system
| British Library Online Contents | 2018
Algebraic model for thermocline thermal storage tank with filler material
| British Library Online Contents | 2015
Algebraic model for thermocline thermal storage tank with filler material
| British Library Online Contents | 2015
| British Library Online Contents | 2014