Journal
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
Volume 31, Issue 2, Pages 158-176Publisher
WILEY-HINDAWI
DOI: 10.1002/er.1240
Keywords
ice-on-coil; phase change; solidification; thermal energy storage; experimental and numerical analysis
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In this study, an external melt ice-on-coil thermal storage was studied and tested over various inlet conditions of secondary fluid-glycol solution-flow rate and temperature in charging process. Experiments were conducted to investigate the effect of inlet conditions of secondary fluid and validate the numerical model predictions on ice-on-coil thermal energy storage system. The total thermal storage energy and the heat transfer rate in the system were investigated in the range of 10 l min(-1) <= <= 60 1 min(-1). A new numerical model based on temperature transforming method for phase change material (PCM) described by Faghri was developed to solve the problem of the system consisting of governing equations for the heat transfer fluid, pipe wall and PCM. Numerical simulations were performed to investigate the effect of working conditions of secondary fluid and these were compared with the experimental results. The numerical results verified with experimental investigation show that the stored energy rises with increasing flow rate a decreasing tendency. It is also observed that the inlet temperature of the fluid has more influence on energy storage quantity than flow rate. Copyright (c) 2006 John Wiley & Sons, Ltd.
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