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Comparison of heat transfer between cylindrical and conical vertical shell-and-tube latent heat thermal energy storage systems
Citation
Seddegh, S and Tehrani, SSM and Wang, X and Cao, F and Taylor, RA, Comparison of heat transfer between cylindrical and conical vertical shell-and-tube latent heat thermal energy storage systems, Applied Thermal Engineering, 130 pp. 1349-1362. ISSN 1359-4311 (2018) [Refereed Article]
Copyright Statement
Copyright 2017 Elsevier Ltd.
DOI: doi:10.1016/j.applthermaleng.2017.11.130
Abstract
The shell-and-tube latent heat thermal energy storage (LHTES) system has been widely studied. In this
paper, the effect of geometric design on vertical shell and tube LHTES systems is investigated.
Accordingly, cylindrical and conically shaped experimental tests are developed for this purpose. The thermal
performance of the conical and cylindrical systems is compared experimentally and theoretically.
The temporal variation of the experimental temperature is used to validate the mathematical model
and demonstrate the effects of natural convection on heat transfer in the phase change material (PCM)
during the charging and discharging processes of both systems. The melting/solidification time, liquid
fraction, and stored/released energy are used to evaluate the performance of the two systems. The results
show that the conical system can store thermal energy much faster than the cylindrical system at the
same operating condition at a specific charging time before the system is fully charged. This is enabled
since the conical design allows natural convection to dominate in a large volume of PCM at top of the container.
However, there is no significant difference during the discharging process. The results indicate
that the natural convection effect can be advantageously utilized by optimization of the design of the
shell-and-tube LHTES system.
Item Details
Item Type: | Refereed Article |
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Keywords: | latent heat thermal energy storage, phase change materials, natural convection, shell and tube, conical geometry |
Research Division: | Engineering |
Research Group: | Mechanical Engineering |
Research Field: | Energy Generation, Conversion and Storage Engineering |
Objective Division: | Energy |
Objective Group: | Renewable Energy |
Objective Field: | Solar-Thermal Energy |
Author: | Seddegh, S (Mr Saeid Seddegh Kiyaroudi) |
Author: | Wang, X (Associate Professor Xiaolin Wang) |
ID Code: | 123578 |
Year Published: | 2018 |
Deposited By: | Engineering |
Deposited On: | 2018-01-11 |
Last Modified: | 2018-03-22 |
Downloads: | 0 |
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