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Study on thermal performance of a PCM enhanced hydronic radiant floor heating system

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  • Larwa, Barbara
  • Cesari, Silvia
  • Bottarelli, Michele

Abstract

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.

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  • Larwa, Barbara & Cesari, Silvia & Bottarelli, Michele, 2021. "Study on thermal performance of a PCM enhanced hydronic radiant floor heating system," Energy, Elsevier, vol. 225(C).
    • Handle: RePEc:eee:energy:v:225:y:2021:i:c:s0360544221004941
    DOI: 10.1016/j.energy.2021.120245
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    References listed on IDEAS

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    10. Gür, Muhammed & Öztop, Hakan F. & Selimefendigil, Fatih, 2023. "Analysis of solar underfloor heating system assisted with nano enhanced phase change material for nearly zero energy buildings approach," Renewable Energy, Elsevier, vol. 218(C).
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