Skip to main content

Performance Evaluation of Coupled Thermal Enhancement through Novel Wire-Wound Fins Design and Graphene Nano-Platelets in Shell-and-Tube Latent Heat Storage System.

Khan, Z. and Khan, Z. A., 2021. Performance Evaluation of Coupled Thermal Enhancement through Novel Wire-Wound Fins Design and Graphene Nano-Platelets in Shell-and-Tube Latent Heat Storage System. Energies, 14 (13), -.

Full text available as:

[img]
Preview
PDF
energies-14-03743.pdf

3MB

Official URL: https://www.mdpi.com/1996-1073/14/13/3743

DOI: 10.3390/en14133743

Abstract

Technological development in latent heat storage (LHS) system is essential for energy security and energy management for both renewable and non-renewable sources. In this article, the numerical analyses on shell-and-tube based LHS system with coupled thermal enhancement through ex-tended fins and nano-additives are conducted to propose optimal combinations for guaranteed higher discharging rate, enthalpy capacity and thermal distribution. Transient numerical simu-lations of fourteen scenarios with varied combinations are investigated in three-dimensional computational models. Shell-and-tube includes paraffin as phase change material (PCM), longi-tudinal, radial and wire-wound fins and graphene nano-platelets (GNP) as extended fins and nano-additives, respectively. The extended fins have demonstrated better effectiveness than nano-additives. For instance, the discharging durations for paraffin with longitudinal, radial and wire-wound fins are shortened by 88.76%, 95.13% and 96.44% as compared to 39.33% for paraffin with 2.5% GNP. The combined strengths of extended fins and nano-additives have indicated further enhancement in neutralising the insulative resistance and stratification of paraffin. However, the increase in volume fraction from 1% to 3% and 5% is rather detrimental to total enthalpy capacity. Hence, the novel designed wire-wound fins with both base paraffin and paraffin with 1% GNP are proposed as optimal candidates owing to their significantly higher heat transfer potentials. The proposed novel designed configuration can retrieve 11.15 MJ of thermal enthalpy in 1.08 h as compared to 44.5 h for paraffin in conventional shell-and-tube without fins. In addition, the proposed novel designed LHS systems have prolonged service life with zero maintenance and flexible scalability to meet both medium and large-scale energy storage demands.

Item Type:Article
ISSN:1996-1073
Additional Information:This article belongs to the Special Issue Advanced Material and Design in Energy Storage.
Uncontrolled Keywords:Thermal energy storage (TES); Latent heat storage (LHS); Graphene nano-platelets; Solidification; Heat transfer enhancement; Shell-and-tube heat exchanger
Group:Faculty of Science & Technology
ID Code:35710
Deposited By: Unnamed user with email symplectic@symplectic
Deposited On:29 Jun 2021 13:53
Last Modified:29 Jun 2021 13:53

Downloads

Downloads per month over past year

More statistics for this item...
Repository Staff Only -