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Climatic analysis of a passive cooling technology for the built environment in hot countries

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  • Calautit, John Kaiser
  • Hughes, Ben Richard
  • Nasir, Diana SNM

Abstract

The aim of this work was to determine the ventilation and cooling potential of a passive cooling windcatcher operating under hot climatic conditions by replicating the monthly wind velocity, wind direction, temperature and relative humidity (RH) observed in a hot-desert city. The city of Ras-Al-Khaimah (RAK), UAE was used as the location of the case-study and available climatic data was used as inlet boundary conditions for the numerical analysis. The study employed the CFD code FLUENT 14.5 with the standard k–ε model to conduct the steady-state RANS simulation. The windcatcher model was incorporated to a 3×3×3m3 test room model, which was identical to the one used in the field test. Unlike most numerical simulation of windcatchers, the work will simulate wind flows found in sub-urban environment. The numerical model provided detailed analysis of the pressure, airflow and temperature distributions inside the windcatcher and test room model. Temperature and velocity profiles indicated an induced, cooler airflow inside the room; outside air was cooled from 38°C to 26–28°C, while the average induced airflow speed was 0.59m/s (15% lower compared to a windcatcher w/out heat pipes). Field testing measurements were carried out in the Jazira Hamra area of RAK during the month of September. The test demonstrated the positive effect of the integration of heat pipes on the cooling performance but also highlighted several issues. The comparison between the measured and predicted supply temperatures were in good agreement, with an average error of 3.15%.

Suggested Citation

  • Calautit, John Kaiser & Hughes, Ben Richard & Nasir, Diana SNM, 2017. "Climatic analysis of a passive cooling technology for the built environment in hot countries," Applied Energy, Elsevier, vol. 186(P3), pages 321-335.
    • Handle: RePEc:eee:appene:v:186:y:2017:i:p3:p:321-335
    DOI: 10.1016/j.apenergy.2016.05.096
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    References listed on IDEAS

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    1. Calautit, John Kaiser & Hughes, Ben Richard & Chaudhry, Hassam Nasarullah & Ghani, Saud Abdul, 2013. "CFD analysis of a heat transfer device integrated wind tower system for hot and dry climate," Applied Energy, Elsevier, vol. 112(C), pages 576-591.
    2. Bouchahm, Yasmina & Bourbia, Fatiha & Belhamri, Azeddine, 2011. "Performance analysis and improvement of the use of wind tower in hot dry climate," Renewable Energy, Elsevier, vol. 36(3), pages 898-906.
    3. Calautit, John Kaiser & Hughes, Ben Richard & O’Connor, Dominic & Shahzad, Sally Salome, 2017. "Numerical and experimental analysis of a multi-directional wind tower integrated with vertically-arranged heat transfer devices (VHTD)," Applied Energy, Elsevier, vol. 185(P2), pages 1120-1135.
    4. Alnaser, W.E. & Alnaser, N.W., 2011. "The status of renewable energy in the GCC countries," Renewable and Sustainable Energy Reviews, Elsevier, vol. 15(6), pages 3074-3098, August.
    5. Calautit, John Kaiser & Hughes, Ben Richard & Shahzad, Sally Salome, 2015. "CFD and wind tunnel study of the performance of a uni-directional wind catcher with heat transfer devices," Renewable Energy, Elsevier, vol. 83(C), pages 85-99.
    6. Rahman, M.M. & Rasul, M.G. & Khan, M.M.K., 2010. "Energy conservation measures in an institutional building in sub-tropical climate in Australia," Applied Energy, Elsevier, vol. 87(10), pages 2994-3004, October.
    7. Kalantar, Vali, 2009. "Numerical simulation of cooling performance of wind tower (Baud-Geer) in hot and arid region," Renewable Energy, Elsevier, vol. 34(1), pages 246-254.
    8. Yau, Y.H. & Lee, S.K., 2010. "Feasibility study of an ice slurry-cooling coil for HVAC and R systems in a tropical building," Applied Energy, Elsevier, vol. 87(8), pages 2699-2711, August.
    9. O’Connor, Dominic & Calautit, John Kaiser S. & Hughes, Ben Richard, 2016. "A review of heat recovery technology for passive ventilation applications," Renewable and Sustainable Energy Reviews, Elsevier, vol. 54(C), pages 1481-1493.
    10. Calautit, John Kaiser & Chaudhry, Hassam Nasarullah & Hughes, Ben Richard & Ghani, Saud Abdul, 2013. "Comparison between evaporative cooling and a heat pipe assisted thermal loop for a commercial wind tower in hot and dry climatic conditions," Applied Energy, Elsevier, vol. 101(C), pages 740-755.
    11. Bahadori, M.N. & Mazidi, M. & Dehghani, A.R., 2008. "Experimental investigation of new designs of wind towers," Renewable Energy, Elsevier, vol. 33(10), pages 2273-2281.
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    3. Xiaolei Fan & Tao Yu & Peng Liu & Xiangdong Li, 2022. "Uniformity of Supply Air in the Plenum for Under-Floor Air Distribution Ventilation in a Circular Conference Room: A CFD Study," Energies, MDPI, vol. 15(17), pages 1-18, August.
    4. Javanroodi, Kavan & Mahdavinejad, Mohammadjavad & Nik, Vahid M., 2018. "Impacts of urban morphology on reducing cooling load and increasing ventilation potential in hot-arid climate," Applied Energy, Elsevier, vol. 231(C), pages 714-746.
    5. Madjid Soltani & Alireza Dehghani-Sanij & Ahmad Sayadnia & Farshad M. Kashkooli & Kobra Gharali & SeyedBijan Mahbaz & Maurice B. Dusseault, 2018. "Investigation of Airflow Patterns in a New Design of Wind Tower with a Wetted Surface," Energies, MDPI, vol. 11(5), pages 1-23, April.
    6. Kang, Daeho & Strand, Richard K., 2018. "Performance control of a spray passive down-draft evaporative cooling system," Applied Energy, Elsevier, vol. 222(C), pages 915-931.
    7. Calautit, John Kaiser & O’Connor, Dominic & Tien, Paige Wenbin & Wei, Shuangyu & Pantua, Conrad Allan Jay & Hughes, Ben, 2020. "Development of a natural ventilation windcatcher with passive heat recovery wheel for mild-cold climates: CFD and experimental analysis," Renewable Energy, Elsevier, vol. 160(C), pages 465-482.
    8. Syed Ahmed Kabir, Ijaz Fazil & Ng, E.Y.K., 2019. "Effect of different atmospheric boundary layers on the wake characteristics of NREL phase VI wind turbine," Renewable Energy, Elsevier, vol. 130(C), pages 1185-1197.
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    10. O' Donovan, Adam & O' Sullivan, Paul D. & Murphy, Michael D., 2019. "Predicting air temperatures in a naturally ventilated nearly zero energy building: Calibration, validation, analysis and approaches," Applied Energy, Elsevier, vol. 250(C), pages 991-1010.

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