Heat transfer within mortar containing micro-encapsulated PCM: Numerical approach

被引：21
|
作者：
El Ouali, A. [1 ]
El Rhafiki, T. [1 ]
Kousksou, T. [2 ]
Allouhi, A. [3 ]
Mandaoui, M. [4 ]
Jamil, A. [3 ]
Zeraouli, Y. [2 ]
机构：
[1] Univ Moulay Ismail UMI Marjane II, ENSAM, BP 4024, Meknes Ismailia, Morocco
[2] Univ Pau & Pays ADOUR, Lab Sci Ingn Appliquees Mecan & Genie Elect Feder, EA4581, E2S Uppa, F-64000 Pau, France
[3] Univ Sidi Mohamed Ibn Abdelah, Ecole Super Technol Fes, Route Imouzzer BP 2427, Fes, Morocco
[4] Univ Abdelmalek Essaddi Tanger, Equipe Rech Transferts Therm & Energet, UAE Dept Phys FST E14FST, Tangier, Morocco
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2019年 / 210卷
关键词：
Microencapsulated PCM; Heat transfer; Building; DSC; Hysteresis phenomenon; PHASE-CHANGE MATERIALS; THERMAL-ENERGY STORAGE; T-HISTORY; DSC; ENTHALPY; CRYSTALLIZATION; BUILDINGS; EMULSIONS; BEHAVIOR; MODEL;
D O I：
10.1016/j.conbuildmat.2019.03.177
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
An axisymmetric physical model based on the porous medium approach was performed to quantify the thermal gradients inside a building material containing microencapsulated phase change material (PCM) in the differential scanning calorimeter cells. The conservation equations are solved numerically using finite difference method. The general expressions of the specific enthalpy, the apparent heat capacity and the equivalent heat capacity are exposed. The influence of various parameters like the heating/cooling rate, the volume fraction of the PCM and the sample masse on the thermal behavior of these materials is investigated and discussed. Despite the small dimensions of the differential scanning calorimeter samples, important temperature gradients were observed during the phase change process of the PCM. (C) 2019 Elsevier Ltd. All rights reserved.
引用
收藏
页码：422 / 433
页数：12
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