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Correlation of Ventilative Cooling Potentials and Building Energy Savings in Various Climatic Zones

Author

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  • Haolia Rahman

    (Mechanical Engineering, Politeknik Negeri Jakarta, Depok 16425, Jawa Barat, Indonesia)

  • Hwataik Han

    (Mechanical Engineering, Kookmin University, 77 Jeungneung-ro, Seongbuk-gu, Seoul 02707, Korea)

Abstract

The introduction of cool outdoor air can help in reducing the energy consumption for cooling during summer. Ventilative cooling potentials (VCPs) have been defined in various ways in the literature to represent potential cooling hours in specified outdoor temperature ranges. However, the energy-saving potential of ventilative cooling can differ between buildings in the same climatic zone depending on the buildings’ thermal characteristics and system operations. In this study, new VCPs are introduced with an index of temperature shift based on adaptive thermal comfort. This index can be determined based on the balance temperature difference of the buildings, which is defined as the heat gain in the building divided by the thermal transmission and air exchange characteristics of the building envelope under quasi-steady state conditions. The proposed method was also compared with those reported in the literature, including a computer-based VCP tool. It is the objective of the present study to investigate the correlation between VCPs and actual energy savings via ventilative cooling. Simulations were conducted in an office building for a four-month period during summer to calculate the energy saved via ventilative cooling in comparison with that achieved with a mechanical cooling system. Eight cities representing four different climatic conditions were considered: tropical, dry, temperate, and continental. Our results revealed a strong correlation between the energy savings and the proposed VCPs in the case of a proper temperature shift estimation in all climatic zones. The computerized VCP tool also exhibited good correlation with the calculated energy savings and with the VCPs proposed herein.

Suggested Citation

  • Haolia Rahman & Hwataik Han, 2019. "Correlation of Ventilative Cooling Potentials and Building Energy Savings in Various Climatic Zones," Energies, MDPI, vol. 12(6), pages 1-10, March.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:6:p:968-:d:213423
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    References listed on IDEAS

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    1. Campaniço, Hugo & Soares, Pedro M.M. & Hollmuller, Pierre & Cardoso, Rita M., 2016. "Climatic cooling potential and building cooling demand savings: High resolution spatiotemporal analysis of direct ventilation and evaporative cooling for the Iberian Peninsula," Renewable Energy, Elsevier, vol. 85(C), pages 766-776.
    2. Campaniço, Hugo & Hollmuller, Pierre & Soares, Pedro M.M., 2014. "Assessing energy savings in cooling demand of buildings using passive cooling systems based on ventilation," Applied Energy, Elsevier, vol. 134(C), pages 426-438.
    3. Yao, Runming & Li, Baizhan & Steemers, Koen & Short, Alan, 2009. "Assessing the natural ventilation cooling potential of office buildings in different climate zones in China," Renewable Energy, Elsevier, vol. 34(12), pages 2697-2705.
    4. Artmann, N. & Manz, H. & Heiselberg, P., 2007. "Climatic potential for passive cooling of buildings by night-time ventilation in Europe," Applied Energy, Elsevier, vol. 84(2), pages 187-201, February.
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    Cited by:

    1. Mohammad K. Najjar & Vivian W. Y. Tam & Leandro Torres Di Gregorio & Ana Catarina Jorge Evangelista & Ahmed W. A. Hammad & Assed Haddad, 2019. "Integrating Parametric Analysis with Building Information Modeling to Improve Energy Performance of Construction Projects," Energies, MDPI, vol. 12(8), pages 1-22, April.

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