Open Access Repository

Investigation on optimal shell-to-tube radius ratio of a vertical shell-and-tube latent heat energy storage system

Shen, G ORCID: 0000-0003-2803-4133, Wang, X ORCID: 0000-0003-4293-7523, Chan, A ORCID: 0000-0003-0042-8448, Cao, F and Yin, X 2020 , 'Investigation on optimal shell-to-tube radius ratio of a vertical shell-and-tube latent heat energy storage system' , Solar Energy, vol. 211 , pp. 732-743 , doi: 10.1016/j.solener.2020.10.003.

Full text not available from this repository.

Abstract

This study aims to investigate the optimal shell-to-tube radius ratio in a vertical shell-and-tube latent heat thermal energy storage system with phase change material packed in the annulus and heat transfer fluid circulating in the central tube. A conjugate thermodynamic model is developed and validated, and then applied to investigate two series of system configurations: varying the phase change material shell radius at a fixed heat transfer fluid tube radius and varying the heat transfer fluid tube radius at a fixed shell radius. The numerical investigation compares and evaluates energy storage/retrieval density, energy storage/retrieval rate, and total stored/retrieved energy capacity under different shell-to-tube radius ratios. The results show that the thermal behaviour in both series of units is very similar. The optimal radius ratio slightly increases as the total charging/discharging time increases. The unit height has a gentle effect on the optimal radius ratio in the charging process and a negligible influence in the discharging process. By balancing the energy storage/retrieval density, energy storage/retrieval rate, and storage/retrieval capacity in both charging and discharging processes, the optimal shell-to-tube radius ratio is found to be around 5 for both series of configurations at the studied total charging/discharging times.

Item Type: Article
Authors/Creators:Shen, G and Wang, X and Chan, A and Cao, F and Yin, X
Keywords: latent heat energy storage, shell-and-tube heat exchanger, thermal performance, energy storage density
Journal or Publication Title: Solar Energy
Publisher: Pergamon-Elsevier Science Ltd
ISSN: 0038-092X
DOI / ID Number: 10.1016/j.solener.2020.10.003
Copyright Information:

Copyright 2020 International Solar Energy Society

Related URLs:
Item Statistics: View statistics for this item

Actions (login required)

Item Control Page Item Control Page
TOP