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Effectiveness of a Cool Bed Linen for Thermal Comfort and Sleep Quality in Air-Conditioned Bedroom under Hot-Humid Climate

Author

Listed:
  • Sheikh Ahmad Zaki

    (Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia Kuala Lumpur, Kuala Lumpur 54100, Malaysia)

  • Mohamad Faizal Rosli

    (Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia Kuala Lumpur, Kuala Lumpur 54100, Malaysia)

  • Hom Bahadur Rijal

    (Faculty of Environmental Studies, Tokyo City University, Yokohama 224-8551, Japan)

  • Farah Nurhanis Hassan Sadzli

    (Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia Kuala Lumpur, Kuala Lumpur 54100, Malaysia)

  • Aya Hagishima

    (Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Fukuoka 816-8580, Japan)

  • Fitri Yakub

    (Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia Kuala Lumpur, Kuala Lumpur 54100, Malaysia)

Abstract

Comfort temperature and sleep quality involving 20 participants were determined in two cases: Case A (arbitrary, controlled air-conditioner setting) and Case B (adjustment of 3 °C higher than the setting of Case A with cool bed linen). Data of indoor thermal comfort and electricity consumption were collected every night throughout the measurement period. Questionnaires on thermal comfort and sleep quality were distributed twice a night for a duration of three nights for each case; the first night was for respondents’ adaptation and the following two nights were for measurement. The sleep quality of the respondents was objectively measured using a commercially available activity tracker. Results found that most respondents were thermally comfortable in both cases, with 39% lower energy consumption reported for Case B compared to Case A. The thermal conditions of Case B were found to be more tolerable than those of Case A. Most respondents reported to have a calm and satisfied sleep for both cases. Comfort temperature and Sleep Efficiency Index ( SEI ) were found to be maintained in both cases.

Suggested Citation

  • Sheikh Ahmad Zaki & Mohamad Faizal Rosli & Hom Bahadur Rijal & Farah Nurhanis Hassan Sadzli & Aya Hagishima & Fitri Yakub, 2021. "Effectiveness of a Cool Bed Linen for Thermal Comfort and Sleep Quality in Air-Conditioned Bedroom under Hot-Humid Climate," Sustainability, MDPI, vol. 13(16), pages 1-27, August.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:16:p:9099-:d:614132
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    Cited by:

    1. Cinzia Buratti & Francesca Merli, 2022. "Sustainable Materials for the Thermal and Noise Insulation of Buildings: An Editorial," Sustainability, MDPI, vol. 14(9), pages 1-2, April.

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