| publication name | Numerical investigation of the melting temperature effect on the performance of thermocline thermal energy storage tank for CSP |
|---|---|
| Authors | Karem Elsayed Elfeky, Naveed Ahmed, S.M.A. Naqvi, Qiuwang Wang |
| year | 2019 |
| keywords | Spherical capsule, Phase change material, Melting temperature, Concentrating solar power |
| journal | Energy Procedia |
| volume | 158 |
| issue | 1 |
| pages | 4715-4720 |
| publisher | Elsevier |
| Local/International | International |
| Paper Link | Not Available |
| Full paper | download |
| Supplementary materials | Not Available |
Abstract
he current paper presents parametric study to evaluate the effect of the melting temperature on the performance of multi-layered solid-PCM (MLSPCM) thermocline tank for concentrated solar power plants (CSP) applications. The model is developed using the Concentric-Dispersion (C-D) equations. The results obtained are validated against the experimental data from the literature. The governing equations are solved in MATLAB using finite difference method. The results show that an optimal three-layer cascaded thermocline tank should include a top PCM layer that has a dimensionless temperature (θ) equal to 0.8, a middle PCM layer that has a dimensionless temperature (θ) equal to 0.5, and a bottom PCM layer that has a dimensionless temperature (θ) equal to 0.35. Moreover, the results show that an optimal three-layer cascaded latent heat thermocline tank should include a top PCM layer that melts slightly above the molten salt hot supply threshold and a bottom PCM layer that melts slightly below the cold return threshold.