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Parametric Performance Analysis of the Cooling Potential of Earth-to-Air Heat Exchangers in Hot and Humid Climates

Author

Listed:
  • Mushk Bughio

    (Department of Architecture, College of Engineering, Sungkyunkwan University, Suwon 16419, Korea
    Department of Architecture, Dawood University of Engineering and Technology, Karachi 74800, Pakistan)

  • Swati Bahale

    (Department of Architecture, College of Engineering, Sungkyunkwan University, Suwon 16419, Korea)

  • Waqas Ahmed Mahar

    (Department of Architecture, Balochistan University of Information Technology, Engineering & Management Sciences (BUITEMS), Airport Road, Baleli, Quetta 87300, Pakistan
    Sustainable Building Design (SBD) Lab, Department of Urban & Environmental Engineering (UEE), Faculty of Applied Sciences, Université de Liège, 4000 Liège, Belgium)

  • Thorsten Schuetze

    (Department of Architecture, College of Engineering, Sungkyunkwan University, Suwon 16419, Korea)

Abstract

Earth-to-air heat exchangers (EAHEs) are widely used to reduce the indoor temperature and associated cooling energy demand of buildings. This study investigated the potential reduction in indoor temperatures via energy-efficient ventilation through EAHEs in an existing architectural campus building (ACB) with an energy-efficient renovated building envelope in the hot and humid climate of Karachi, Pakistan. The building information modeling (BIM) program Autodesk Revit was used to develop a virtual ACB BIM model. An EnergyPlus parametric analysis of the ACB BIM model in DesignBuilder facilitated quantification of the influences of operating parameters such as pipe installation depth and pipe diameter for EAHEs with similar total pipe lengths and air-exchange rates on the performance of the EAHEs during the cooling season. A 3 m deep and 0.1 m diameter pipe layout in open space significantly reduces indoor temperature via a specific duct layout in an exemplary ACB. The results show that a pipe diameter above 0.1 m is unsuitable because of the reduction in convective heat transfer due to the increase in the pipe’s surface area and the decrease in pressure in the pipe. The findings of this study can be used to improve the indoor thermal comfort of buildings in climates with comparable properties.

Suggested Citation

  • Mushk Bughio & Swati Bahale & Waqas Ahmed Mahar & Thorsten Schuetze, 2022. "Parametric Performance Analysis of the Cooling Potential of Earth-to-Air Heat Exchangers in Hot and Humid Climates," Energies, MDPI, vol. 15(19), pages 1-21, September.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:19:p:7054-:d:925250
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    References listed on IDEAS

    as
    1. Yu Zhou & Asal Bidarmaghz & Nikolas Makasis & Guillermo Narsilio, 2021. "Ground-Source Heat Pump Systems: The Effects of Variable Trench Separations and Pipe Configurations in Horizontal Ground Heat Exchangers," Energies, MDPI, vol. 14(13), pages 1-15, June.
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    5. Waqas Ahmed Mahar & Griet Verbeeck & Sigrid Reiter & Shady Attia, 2020. "Sensitivity Analysis of Passive Design Strategies for Residential Buildings in Cold Semi-Arid Climates," Sustainability, MDPI, vol. 12(3), pages 1-22, February.
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    7. Mushk Bughio & Muhammad Shoaib Khan & Waqas Ahmed Mahar & Thorsten Schuetze, 2021. "Impact of Passive Energy Efficiency Measures on Cooling Energy Demand in an Architectural Campus Building in Karachi, Pakistan," Sustainability, MDPI, vol. 13(13), pages 1-35, June.
    8. Maoz & Saddam Ali & Noor Muhammad & Ahmad Amin & Mohammad Sohaib & Abdul Basit & Tanvir Ahmad, 2019. "Parametric Optimization of Earth to Air Heat Exchanger Using Response Surface Method," Sustainability, MDPI, vol. 11(11), pages 1-19, June.
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