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Open AccessArticle

Phase Change Material Used for Masonry Joints to Reduce the Thermal Bridge Effect

by Wei Jiang 1,2,* and Dan Liu 2
1
Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education, Tongji University, Shanghai 201804, China
2
School of Materials Science and Engineering, Tongji University, Shanghai 201804, China
*
Author to whom correspondence should be addressed.
Materials 2019, 12(12), 1895; https://doi.org/10.3390/ma12121895
Received: 20 May 2019 / Revised: 8 June 2019 / Accepted: 10 June 2019 / Published: 12 June 2019
In this paper, a numerical calculation and application analysis of composite phase change material masonry mortar applied to wall parts are performed during the research process. Instead of the conventional “sandwich” phase change material wall, our research group mainly uses phase change materials in the wall parts to build masonry joints to reduce the thermal bridge effect. The influence of masonry joints on the heat transfer of the wall is demonstrated. A quantitative description of the transient heat transfer coefficient is obtained to measure the heat preservation performance of the phase change material wall. Furthermore, the influence of different proportions of phase change materials on the wall heat transfer in different external environments is discussed, supplemented by the influence of the working range and sensitivity on the heat transfer. In summary, the use of phase change materials in the construction of masonry joints is a great innovation for conventional “sandwich” phase change material walls, optimizing the form, the thermal bridge effect and the heat preservation performance of wall parts. The quantitative description of the transient heat transfer coefficient expands the development of wall heat transfer theories. In addition, the conclusions are of great guiding significance for the structure and the phase change material’s blending proportion for the innovative heat preservation phase change material wall. View Full-Text
Keywords: phase change material; finite element analysis; thermal bridge; heat transfer coefficient; latent heat phase change material; finite element analysis; thermal bridge; heat transfer coefficient; latent heat
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Jiang, W.; Liu, D. Phase Change Material Used for Masonry Joints to Reduce the Thermal Bridge Effect. Materials 2019, 12, 1895.

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