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Total Solar Reflectance Optimization of the External Paint Coat in Residential Buildings Located in Mediterranean Climates

Author

Listed:
  • Tiago Souto

    (Corporação Industrial do Norte, S.A., avenida Dom Mendo, n. 831, Apartado 1008, 4471-909 Maia, Portugal)

  • Margarida Almeida

    (Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal)

  • Vítor Leal

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

  • João Machado

    (Corporação Industrial do Norte, S.A., avenida Dom Mendo, n. 831, Apartado 1008, 4471-909 Maia, Portugal)

  • Adélio Mendes

    (Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal)

Abstract

This work addresses the effect of the total solar reflectance (TSR) value of paints applied in residential buildings upon their thermal performance. A semi-detached residential building was modeled in the ESP-r software, and taken as the basis for parametric studies which assessed the effects of variations in (i) the TSR values; (ii) the thermal characteristics of the building envelope; (iii) the location/climate; and: (iv) the way how the indoor temperature is controlled. The parametric studies were used to find optimal TSR values for each combination of Location + Building envelope characteristics (mainly the existence of thermal insulation). It was concluded that paints having a carefully chosen TSR value lead to better indoor thermal temperatures if the buildings have no mechanical heating or cooling, or to energy savings of up to 32% if they do.

Suggested Citation

  • Tiago Souto & Margarida Almeida & Vítor Leal & João Machado & Adélio Mendes, 2020. "Total Solar Reflectance Optimization of the External Paint Coat in Residential Buildings Located in Mediterranean Climates," Energies, MDPI, vol. 13(11), pages 1-18, May.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:11:p:2729-:d:364414
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    References listed on IDEAS

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    1. Aktacir, Mehmet Azmi & Büyükalaca, Orhan & YIlmaz, Tuncay, 2010. "A case study for influence of building thermal insulation on cooling load and air-conditioning system in the hot and humid regions," Applied Energy, Elsevier, vol. 87(2), pages 599-607, February.
    2. Wang, Cheng & Zhu, Ye & Guo, Xiaofeng, 2019. "Thermally responsive coating on building heating and cooling energy efficiency and indoor comfort improvement," Applied Energy, Elsevier, vol. 253(C), pages 1-1.
    3. Vasco Granadeiro & Margarida Almeida & Tiago Souto & Vítor Leal & João Machado & Adélio Mendes, 2020. "Thermochromic Paints on External Surfaces: Impact Assessment for a Residential Building through Thermal and Energy Simulation," Energies, MDPI, vol. 13(8), pages 1-16, April.
    4. Akbari, H, 2003. "Measured energy savings from the application of reflective roofs in two small non-residential buildings," Energy, Elsevier, vol. 28(9), pages 953-967.
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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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