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Energy retrofit of PCM-applied apartment buildings considering building orientation and height

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  • Park, Ji Hun
  • Berardi, Umberto
  • Chang, Seong Jin
  • Wi, Seunghwan
  • Kang, Yujin
  • Kim, Sumin

Abstract

This study analyzed the building energy performance of apartment buildings using retrofit systems with phase change materials (PCMs). The apartment type, building orientation, and height are considered to evaluate the implementation of an innovative PCM system. The building models selected were a flat-type apartment and tower-type apartment. According to the results, building orientation, height floor, and climate factors have a complex correlation with each other. Depending on the solar characteristics, solar altitude, solar time, wind direction, and wind speed, the suitable Building orientation and height for energy reduction of buildings vary. Such parameters also affect to the suitable PCM application for energy savings. As a result, PCMs of 20 °C and 26 °C showed to be suitable for the flat-type apartments with a southward orientation a westward orientation, respectively. Tower-type apartment with eastward and southward orientation showed the highest energy saving with PCM of 24 °C; the units with westward and northward orientation showed the highest energy reduction at 23 °C. Since the PCM efficiency for the energy savings are different depending on building orientations, heights, and climate factors, such variables are necessary to consider for the PCM application to the apartment building.

Suggested Citation

  • Park, Ji Hun & Berardi, Umberto & Chang, Seong Jin & Wi, Seunghwan & Kang, Yujin & Kim, Sumin, 2021. "Energy retrofit of PCM-applied apartment buildings considering building orientation and height," Energy, Elsevier, vol. 222(C).
    • Handle: RePEc:eee:energy:v:222:y:2021:i:c:s0360544221001262
    DOI: 10.1016/j.energy.2021.119877
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    References listed on IDEAS

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    3. Wang, Haitao & Wei, Jiahua & Guo, Chengzhou & Yang, Liu & Wang, Zuyuan, 2024. "Numerical investigation of the effects of different influencing factors on thermal performance of naturally ventilated roof," Energy, Elsevier, vol. 289(C).
    4. Javad Mohammadpour & Ann Lee & Victoria Timchenko & Robert Taylor, 2022. "Nano-Enhanced Phase Change Materials for Thermal Energy Storage: A Bibliometric Analysis," Energies, MDPI, vol. 15(9), pages 1-14, May.

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