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Experimental evaluation of a heating radiant wall coupled to a ground source heat pump

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  • Romaní, Joaquim
  • Pérez, Gabriel
  • de Gracia, Alvaro

Abstract

A radiant wall heating system embedded in a heavy brickwork envelope and coupled to a ground source heat pump supplied has been experimentally tested under real outdoor conditions. This system was applied to a room sized cubicle built in Puigverd de Lleida (Spain) test-site, where it was studied in system vs. system analysis in comparison to a reference cubicle built with commercial available technologies (insulated alveolar brick wall and air-to-air heat pump). The results showed the potential of the radiant wall, which in continuous operation reached energy savings between 19.97% and 40.72% based on set-point temperature. Most important, the active thermal mass of radiant wall allowed operating in off peak periods. Otherwise, this peak load shifting ability was completely inexistent in the reference cubicle. However, the results show that the radiant cubicle was unsuited to operate in occupancy schedules due to its slow response time. Furthermore, the tests show that optimization of the radiant wall system requires a control strategy that takes in account the dynamics of the system.

Suggested Citation

  • Romaní, Joaquim & Pérez, Gabriel & de Gracia, Alvaro, 2017. "Experimental evaluation of a heating radiant wall coupled to a ground source heat pump," Renewable Energy, Elsevier, vol. 105(C), pages 520-529.
    • Handle: RePEc:eee:renene:v:105:y:2017:i:c:p:520-529
    DOI: 10.1016/j.renene.2016.12.087
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    References listed on IDEAS

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    Cited by:

    1. Luo, Yongqiang & Zhang, Ling & Bozlar, Michael & Liu, Zhongbing & Guo, Hongshan & Meggers, Forrest, 2019. "Active building envelope systems toward renewable and sustainable energy," Renewable and Sustainable Energy Reviews, Elsevier, vol. 104(C), pages 470-491.
    2. Romero Rodríguez, Laura & Sánchez Ramos, José & Álvarez Domínguez, Servando & Eicker, Ursula, 2018. "Contributions of heat pumps to demand response: A case study of a plus-energy dwelling," Applied Energy, Elsevier, vol. 214(C), pages 191-204.
    3. Romaní, Joaquim & Belusko, Martin & Alemu, Alemu & Cabeza, Luisa F. & de Gracia, Alvaro & Bruno, Frank, 2018. "Control concepts of a radiant wall working as thermal energy storage for peak load shifting of a heat pump coupled to a PV array," Renewable Energy, Elsevier, vol. 118(C), pages 489-501.
    4. Yang, Yang & Chen, Sarula, 2022. "Thermal insulation solutions for opaque envelope of low-energy buildings: A systematic review of methods and applications," Renewable and Sustainable Energy Reviews, Elsevier, vol. 167(C).
    5. Romaní, Joaquim & Cabeza, Luisa F. & de Gracia, Alvaro, 2018. "Development and experimental validation of a transient 2D numeric model for radiant walls," Renewable Energy, Elsevier, vol. 115(C), pages 859-870.
    6. Emmanouil Katsigiannis & Petros Antonios Gerogiannis & Ioannis Atsonios & Ioannis Mandilaras & Maria Founti, 2023. "Design and Parametric Analysis of a Solar-Driven Façade Active Layer System for Dynamic Insulation and Radiant Heating: A Renovation Solution for Residential Buildings," Energies, MDPI, vol. 16(13), pages 1-18, July.

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