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An energy benchmarking model for ventilation systems of air-conditioned offices in subtropical climates

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Listed:
  • Mui, K.W.
  • Wong, L.T.
  • Law, L.Y.

Abstract

Since the energy crisis in 1973, engineers have endeavoured to implement energy conservation in buildings. Unfortunately, the effort resulted in energy savings without the fundamental delivery of indoor satisfaction in many cases. In this study, a benchmarking model for the energy consumption of ventilation systems in air-conditioned offices was proposed. This model was developed from the fundamental psychrometric analysis under probable office design conditions in Hong Kong. The results showed that the annual energy-consumption of a ventilation system per unit floor area would be correlated closely with the carbon dioxide (CO2) concentration in the space, but its correlation with the air temperature set-point would be less significant. In some offices, significant energy-savings potential was demonstrated to provide satisfactory indoor air quality (IAQ) without any comfort penalty to the occupants. This model would be useful for the energy performance evaluation and benchmarking of ventilation systems in air-conditioned offices.

Suggested Citation

  • Mui, K.W. & Wong, L.T. & Law, L.Y., 2007. "An energy benchmarking model for ventilation systems of air-conditioned offices in subtropical climates," Applied Energy, Elsevier, vol. 84(1), pages 89-98, January.
    • Handle: RePEc:eee:appene:v:84:y:2007:i:1:p:89-98
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    References listed on IDEAS

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    1. Chung, William & Hui, Y.V. & Lam, Y. Miu, 2006. "Benchmarking the energy efficiency of commercial buildings," Applied Energy, Elsevier, vol. 83(1), pages 1-14, January.
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    Cited by:

    1. Yew Khoy Chuah & Jun Jie Yang, 2020. "A Integrated Dedicated Outdoor Air System to Optimize Energy Saving," Sustainability, MDPI, vol. 12(3), pages 1-12, February.
    2. Cai, Wei & Liu, Fei & Dinolov, Ognyan & Xie, Jun & Liu, Peiji & Tuo, Junbo, 2018. "Energy benchmarking rules in machining systems," Energy, Elsevier, vol. 142(C), pages 258-263.
    3. Zheng, Guozhong & Jing, Youyin & Huang, Hongxia & Zhang, Xutao & Gao, Yuefen, 2009. "Application of Life Cycle Assessment (LCA) and extenics theory for building energy conservation assessment," Energy, Elsevier, vol. 34(11), pages 1870-1879.
    4. Moya, Diego & Torres, Roberto & Stegen, Sascha, 2016. "Analysis of the Ecuadorian energy audit practices: A review of energy efficiency promotion," Renewable and Sustainable Energy Reviews, Elsevier, vol. 62(C), pages 289-296.
    5. Su, Wei & Ai, Zhengtao & Liu, Jing & Yang, Bin & Wang, Faming, 2023. "Maintaining an acceptable indoor air quality of spaces by intentional natural ventilation or intermittent mechanical ventilation with minimum energy use," Applied Energy, Elsevier, vol. 348(C).
    6. O’Neill, Zheng & O’Neill, Charles, 2016. "Development of a probabilistic graphical model for predicting building energy performance," Applied Energy, Elsevier, vol. 164(C), pages 650-658.
    7. Vaisi, Salah & Varmazyari, Pouya & Esfandiari, Masoud & Sharbaf, Sara A., 2023. "Developing a multi-level energy benchmarking and certification system for office buildings in a cold climate region," Applied Energy, Elsevier, vol. 336(C).
    8. Wong, L.T. & Mui, K.W., 2008. "A transient ventilation demand model for air-conditioned offices," Applied Energy, Elsevier, vol. 85(7), pages 545-554, July.
    9. Luo, Yimo & Shao, Shuangquan & Xu, Hongbo & Tian, Changqing & Yang, Hongxing, 2014. "Experimental and theoretical research of a fin-tube type internally-cooled liquid desiccant dehumidifier," Applied Energy, Elsevier, vol. 133(C), pages 127-134.
    10. Benedetti, Miriam & Bonfa', Francesca & Bertini, Ilaria & Introna, Vito & Ubertini, Stefano, 2018. "Explorative study on Compressed Air Systems’ energy efficiency in production and use: First steps towards the creation of a benchmarking system for large and energy-intensive industrial firms," Applied Energy, Elsevier, vol. 227(C), pages 436-448.
    11. Wong, L.T. & Mui, K.W., 2009. "Efficiency assessment of indoor environmental policy for air-conditioned offices in Hong Kong," Applied Energy, Elsevier, vol. 86(10), pages 1933-1938, October.
    12. Chung, William, 2011. "Review of building energy-use performance benchmarking methodologies," Applied Energy, Elsevier, vol. 88(5), pages 1470-1479, May.
    13. Salvatori, Simone & Benedetti, Miriam & Bonfà, Francesca & Introna, Vito & Ubertini, Stefano, 2018. "Inter-sectorial benchmarking of compressed air generation energy performance: Methodology based on real data gathering in large and energy-intensive industrial firms," Applied Energy, Elsevier, vol. 217(C), pages 266-280.
    14. Ma, Zhenjun & Wang, Shengwei, 2009. "Building energy research in Hong Kong: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 13(8), pages 1870-1883, October.
    15. Das, Rajat Subhra & Jain, Sanjeev, 2015. "Simulation of potential standalone liquid desiccant cooling cycles," Energy, Elsevier, vol. 81(C), pages 652-661.
    16. Cai, Wei & Liu, Fei & Zhou, XiaoNa & Xie, Jun, 2016. "Fine energy consumption allowance of workpieces in the mechanical manufacturing industry," Energy, Elsevier, vol. 114(C), pages 623-633.
    17. Li, Zhengwei & Han, Yanmin & Xu, Peng, 2014. "Methods for benchmarking building energy consumption against its past or intended performance: An overview," Applied Energy, Elsevier, vol. 124(C), pages 325-334.
    18. Kusiak, Andrew & Li, Mingyang & Zheng, Haiyang, 2010. "Virtual models of indoor-air-quality sensors," Applied Energy, Elsevier, vol. 87(6), pages 2087-2094, June.
    19. Wong, L.T. & Mui, K.W. & Shi, K.L., 2008. "Energy impact of indoor environmental policy for air-conditioned offices of Hong Kong," Energy Policy, Elsevier, vol. 36(2), pages 714-721, February.
    20. Sahoo, Lalit Kumar & Bandyopadhyay, Santanu & Banerjee, Rangan, 2014. "Benchmarking energy consumption for dump trucks in mines," Applied Energy, Elsevier, vol. 113(C), pages 1382-1396.
    21. Qi, Ronghui & Lu, Lin & Yang, Hongxing & Qin, Fei, 2013. "Investigation on wetted area and film thickness for falling film liquid desiccant regeneration system," Applied Energy, Elsevier, vol. 112(C), pages 93-101.

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