期刊
ENERGY
卷 225, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.energy.2021.120245
关键词
Phase change materials (PCMs); Radiant floor; Thermal energy storage; Experimental testing; Numerical modelling
资金
- IDEAS project e Novel building Integration Designs for increased Efficiencies in Advanced Climatically Tunable Renewable Energy Systems
- European Union's Horizon 2020 research and innovation programme [815271]
- H2020 Societal Challenges Programme [815271] Funding Source: H2020 Societal Challenges Programme
The study aimed to investigate a hydronic radiant floor heating system integrated with macroencapsulated PCM through experimental and numerical analysis of system performance under various conditions. Results showed that high thermal conduction in mortar enhances overall system performance, while coupling technology with PCM containers significantly enhances the effect of wet sand.
Radiant floor systems enhanced with Phase Change Materials (PCMs) could achieve significant energy savings while improving the thermal comfort of occupants in lightweight buildings. Effective integration of PCMs typically requires customised solutions based on a comprehensive analysis due to their complex nature. The objective of the present study is the experimental and numerical investigation of a hydronic radiant floor heating system integrated with macroencapsulated PCM. Experimental tests were carried out on a laboratory-scale by the University of Ferrara, Italy, within the H2020 European project IDEAS. A 2D model was then implemented in COMSOL Multiphysics and calibrated in steady as well as in transient state according to the experimental tests. The behaviour of the system, including temperature distribution and heat flux, were analysed under different conditions. The impact of using dry and wet sand, as well as the effect of the position of PCM -above or under heating pipes -on thermal performance, were investigated. Results showed that the use of high thermal conduction in mortar increases much faster the overall performance of the PCM integrated underfloor heating system. Furthermore, the coupling technology with PCM containers installed under piping significantly enhances the positive effect of wet sand. (c) 2021 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
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