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PoDIT: Portable Device for Indoor Temperature Stabilization: Concept and Theoretical Performance Assessment

Author

Listed:
  • Vítor Leal

    (Department of Mechanical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal)

  • Raul Teixeira

    (Department of Mechanical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal)

Abstract

This work introduces the concept of a new Portable Device for Indoor Temperature Stabilization (PoDIT), to be considered as a low-cost, quick and easy to implement remediation strategy when, for social, economic, or technical reasons, the improvement of the building envelope and/or the adoption of air conditioning are not possible. The main goal is to attenuate the maximum indoor temperature during summer and/or heat waves. The system, which is modular, consists of a certain mass of encaged phase change material (PCM) that stays indoors during the daytime and is transported to the outdoors (e.g., a balcony) during the night to discharge the heat accumulated during the daytime. Both natural convection and forced convection variants were considered. The results showed that, in the configurations and for the reference room and weather considered, the adopting 4 modules of the device can lead to reductions in the maximum room air temperature close to 3 °C, with natural convection. Adopting a fan to impose forced convection at the surfaces of the device can lead to temperature attenuations in excess of 4 °C, as it ensures full solid–liquid commuting and therefore optimal use of the PCM thermal storage capability.

Suggested Citation

  • Vítor Leal & Raul Teixeira, 2020. "PoDIT: Portable Device for Indoor Temperature Stabilization: Concept and Theoretical Performance Assessment," Energies, MDPI, vol. 13(22), pages 1-15, November.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:22:p:5982-:d:445919
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    References listed on IDEAS

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    Cited by:

    1. Vítor Leal, 2021. "Buildings Energy Efficiency and Innovative Energy Systems," Energies, MDPI, vol. 14(16), pages 1-5, August.

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