Energy and exergy analyses of an ice-on-coil thermal energy storage system

Mehmet Akif Ezan, Aytunç Erek and Ibrahim Dincer

Energy, 2011, vol. 36, issue 11, 6375-6386

Abstract: In this study, energy and exergy analyses are carried out for the charging period of an ice-on-coil thermal energy storage system. The present model is developed using a thermal resistance network technique. First, the time-dependent variations of the predicted total stored energy, mass of ice, and outlet temperature of the heat transfer fluid from a storage tank are compared with the experimental data. Afterward, performance of an ice-on-coil type latent heat thermal energy storage system is investigated for several working and design parameters. The results of a comparative study are presented in terms of the variations of the heat transfer rate, total stored energy, dimensionless energetic/exergetic effectiveness and energy/exergy efficiency. The results indicate that working and design parameters of the ice-on-coil thermal storage tank should be determined by considering both energetic and exergetic behavior of the system. For the current parameters, storage capacity and energy efficiency of the system increases with decreasing the inlet temperature of the heat transfer fluid and increasing the length of the tube. Besides, the exergy efficiency increases with increasing the inlet temperature of the heat transfer fluid and increasing the length of the tube.

Keywords: Ice-on-coil; Latent heat; Thermal resistance network; Entropy generation; Exergy efficiency; Thermal energy storage (search for similar items in EconPapers)
Date: 2011
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Citations: View citations in EconPapers (13)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:36:y:2011:i:11:p:6375-6386

DOI: 10.1016/j.energy.2011.09.036

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