Abstract
Plate-type thermal energy storage systems (PTESs) have been proposed to mitigate the effect of the low thermal conductivity of phase change materials on the performance and efficiency of thermal energy storage systems. Nevertheless, a prompt reduction in the thermal power of PTESs due to the drop/rise in the outlet temperature at the early stage of the charging/discharging process has not been well resolved. To remedy this, the current study proposes a modified PTES and presents a computational fluid dynamics model of this PTES for performance and efficiency analysis. The results show that the outlet temperature of the modified PTES is constant for 100 min in the melting and 33 min in the solidification processes, while this temperature drops/raises almost immediately in the similar PTESs after starting these processes. In addition, the presented PTES shows an improvement of 75 % and 28.6 %, respectively, in the energy storage capacity per unit volume and effectiveness than a roll-bonded PTES.
| Original language | English |
|---|---|
| Article number | 106785 |
| Journal | Journal of Energy Storage |
| Volume | 61 |
| DOIs | |
| Publication status | Published - May 2023 |
| Publication type | A1 Journal article-refereed |
Funding
This work was supported financially by the Paavo V. Suominen Fund for Industrial Research at Tampere University . We are also grateful to Maria Goossens, who greatly assisted this research. This work was supported financially by the Paavo V. Suominen Fund for Industrial Research at Tampere University. We are also grateful to Maria Goossens, who greatly assisted this research.
Keywords
- Computational fluid dynamics
- Numerical analysis
- Phase change material
- Plate heat exchanger
- Thermal energy storage
Publication forum classification
- Publication forum level 2
ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering
