Abstract
Although there are many types of thermal energy storages; thermal energy storage with phase change materials (PCM) gives better efficiency due to its high-energy storage capacity and remove the discrepancy between the demand and provide of energy. This study experimentally investigates the charging and discharging process with the use of triplex tube heat exchange device with stearic acid (C18H36O2) as phase change material. The experimentation examined the PCM melting and solidification process with steady inlet temperature of heat transfer fluid. Also, it investigates the effect of mass flow on charging and discharging. The heat transfer rates as well as average effectiveness with duration of phase change process were compared. The result showed that, for both mass flow of 0.33 kg/s and 0.43 kg/s rate of heat transfer during melting and freezing initially declines, it stays stable. It is observed that due to effect of free convection, effectiveness is much higher during the charging than that during discharging process. The average effectiveness is 80% for charging and 70% for discharging.
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Gadhave, P.S., Prabhune, C.L. (2022). Investigative Study on Triplex Tube Heat Exchanger with Stearic Acid as Phase Change Material. In: Palani, I.A., Sathiya, P., Palanisamy, D. (eds) Recent Advances in Materials and Modern Manufacturing. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-19-0244-4_9
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DOI: https://doi.org/10.1007/978-981-19-0244-4_9
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