ePrints

Experimental investigation of the effect of dynamic melting in a cylindrical shell-and-tube heat exchanger using water as PCM

Lookup NU author(s): Dr Steven Tay

Downloads

Full text for this publication is not currently held within this repository. Alternative links are provided below where available.

Abstract

In the present paper, an experimental study is carried out to evaluate the effect of the dynamic melting concept in a cylindrical shell-and-tube heat exchanger using water as the phase change material (PCM) and a potassium formate/water solution as the heat transfer fluid (HTF). The dynamic melting concept is a new heat transfer enhancement technique which consists of recirculating the liquid PCM during the melting process with a pump and thus increasing the overall heat transfer coefficient as a result of the dominance of the forced convection. The HTF flow rate was kept constant at 1 I/min and four different PCM flow rates of 0, 0.5, 1 and 2 1/min were tested. Results from the experimental analysis showed enhancements up to 65.3% on the melting period, up to 56.4% on the effectiveness, and 66% on the heat transfer rates when the PCM flow rate was twice the HTF flow rate. From these experiments, it can be concluded that dynamic melting is an effective technique for enhancing heat transfer during melting of PCM.

Publication metadata

Author(s): Gasia J, Tay NHS, Belusko M, Cabeza LF, Bruno F

Publication type: Article

Publication status: Published

Journal: Applied Energy

Year: 2017

Volume: 185

Issue: Part 1

Pages: 136-145

Print publication date: 01/01/2017

Online publication date: 07/11/2016

Acceptance date: 16/10/2016

ISSN (print): 0306-2619

ISSN (electronic): 1872-9118

Publisher: Elsevier

URL: http://dx.doi.org/10.1016/j.apenergy.2016.10.042

DOI: 10.1016/j.apenergy.2016.10.042

Altmetrics

Funding

Share