期刊
ENERGY
卷 140, 期 -, 页码 1131-1147出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.energy.2017.08.045
关键词
PCM; Experimental validation; Analytical model; Thermophysical properties; New procedure; DSC
资金
- Spanish government [ENE2015-64117-05-1-R, ENE2015-64117-05-3-R, ULLE10-4E-1305]
- European Commission Seventh Framework Programme [PIRSES-GA-2013-610692]
- European Union's Horizon 2020 research and innovation programme [657466]
- Departament d'Universitats, Recerca i Societat de la Informacio de la Generalitat de Catalunya [2016F1_B2 00147]
- Ministerio de Economia y Competitividad de Espana for Grant Juan de la Cierva [FJCI-2015-25741, FJCI-2014-19940]
Phase change materials (PCM) are used in many industrial and residential applications for their advantageous characteristic of high capacity of latent thermal storage by means of an isothermal process. In this context, it is very useful to have predictive mathematical models for the analysis of the thermal performance and for the thermal design of these layers. In this work, an experimental validation of an analytical model that resolves the steady periodic heat transfer problem in a finite layer of PCM is presented. The experimental investigation was conducted employing a PCM with thermophysical and thermochemical behavior very close to those hypothesized in the formulation of the analytical model. For the evaluation of the thermophysical properties of the PCM sample used, an experimental procedure created by the authors was employed. In all tests realized in a sinusoidal and non-sinusoidal periodic regime, the comparison between the measured and calculated trends of the temperature at different sample heights and of the surface heat fluxes show an excellent agreement. Moreover, also having verified the analytical total stored energy, the analytical model constitutes a valid instrument for the evaluation of the latent and sensible contribution and the trend in time of the position of the bi-phase interface. (C) 2017 Elsevier Ltd. All rights reserved.
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