Experimental steady-state and transient thermal performance of materials for thermal energy storage in building applications: From powder SS-PCMs to SS-PCM-based acrylic plaster

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作   者：

Cardenas-Ramirez, Carolina;  Gomez, Maryory A.;  Jaramillo, Franklin;  Cardona, Andres F.;  Fernandez, Angel G.;  Cabeza, Luisa F.; 

作者机构：

Grp Invest Mat & Sistemas Construcc Corona;  Lleida 25001;  Univ Lleida;  Ctr Invest Innovac & Desarrollo Mat CIDEMAT;  Calle 62 52-59;  Medellin 050022;  Colombia|Sumicol SAS;  Spain;  Univ Antioquia UdeA;  GREiA Res Grp;  Sumicol SAS;  Pere Cabrera S-N;  Fac Ingn;  Colombia;  Carrera 48 72 Sur 01; 

关键词：

(SS-PCM);  U-value;  Heat storage capacity;  Decrement factor;  Shape-stabilized phase change materials;  Thermal lag; 

期刊名称：

Energy

i s s n：

0360-5442

年卷期：

2022 年 250 卷 Jul.1 期

页   码：

123768.1-123768.10

页   码：

摘   要：

Thermal performance of SS-PCM composites, simulating building envelope conditions, is difficult to asset with traditional laboratory equipment. However, in this work, the evaluation of three SS-PCM based on eutectic fatty acid mixtures of capric-myristic (CA/MA), lauric-myristic (LA/MA) and palmitic-stearic (PA/ SA) was accomplished by a testing setup that allows to test samples in steady-state and dynamic con-ditions. Moreover, a SS-PCM-based acrylic plaster was evaluated as a fiber cement siding finish. The obtained values were used to calculate the thermal transmittance (U-value), heat storage capacity, and thermal inertia parameters under a simulated diurnal cycle. Results showed that the use of phase change materials in powder form increase thermal lag between 148% and 180% and present a decrement factor <0.2. Furthermore, building envelopes as fiber cement siding with a SS-PCM-based acrylic plaster coating decreased 20.8% the indoor temperature, increase 67.26% the thermal lag and decrease 9% of the decrement factor. (c) 2022 Elsevier Ltd. All rights reserved.