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9388080 
Journal Article 
Sensitivity analysis of design parameters for erythritol melting in a horizontal shell and multi-finned tube system: Numerical investigation 
Anish, R; Joybari, MM; Seddegh, S; Mariappan, V; Haghighat, F; Yuan, Y 
2021 
1 
Renewable Energy
ISSN: 0960-1481 
Elsevier 
163 
Elsevier 
423-436 
WOS:000591523000001 
Latent heat storage systems using phase change materials (PCMs) store large amounts of thermal energy at a near-constant temperature in a compact space. However, PCMs possess relatively low thermal conductivity which prolongs their phase change process; consequently, their applications have been limited. To address this, a numerical investigation was conducted in this study on the heat transfer mechanism in a horizontal shell and multi-finned tube heat exchanger. Erythritol (melting point of 117 degrees C) was selected as the PCM and Therminol-55 was used as the heat transfer fluid. ANSYS Fluent v. 19.0 was used to numerically solve the governing equations. Once validated by comparing with exper-imental data, the developed numerical model was then used to investigate the effect of several design parameters regarding tubes and fins on the storage performance. It was found that number of tubes, fin height as well as rotation of fins and tubes significantly influence the melting process. Overall, the melting duration could be decreased by about 44% when the number of tubes increased from 5 to 9. Moreover, the melting time could be decreased by about 31% when the fin height increased from 6 to 15 mm (C) 2020 Elsevier Ltd. All rights reserved. 
Shell and multi-finned tube heat exchanger; Phase change material; Natural convection; Liquid fraction; Heat transfer enhancement 
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