Abstract
In this study, we investigated the fundamental melting and solidification characteristics of mannitol, erythritol, and their mixture (70 % by mass mannitol: 30 % by mass erythritol) as potential phase-change materials (PCMs) for latent heat thermal energy storage systems, specifically those pertaining to industrial waste heat, having temperatures in the range of 100–250 °C. The melting point of erythritol and mannitol, the melting peak temperature of their mixture, and latent heat were measured using differential scanning calorimetry. The thermal performance of the mannitol mixture was determined during melting and solidification processes, using a heat storage vessel with a pipe heat exchanger. Our results indicated phase-change (fusion) temperatures of 160 °C for mannitol and 113 and 150 °C for the mannitol mixture. Nondimensional correlation equations of the average heat transfer during the solidification process, as well as the temperature and velocity efficiencies of flowing silicon oil in the pipe and the phase-change material (PCM), were derived using several nondimensional parameters.
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This research was performed in cooperation with the New Energy and Industrial Technology Development Organization (NEDO) of Japan.
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Yu, J., Horibe, A., Haruki, N. et al. Melting and solidification characteristics of a mixture of two types of latent heat storage material in a vessel. Heat Mass Transfer 52, 2563–2574 (2016). https://doi.org/10.1007/s00231-016-1767-8
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DOI: https://doi.org/10.1007/s00231-016-1767-8