Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/220095
Title: THERMAL COMFORT OF SLEEPING HUMAN SUBJECTS IN THE TROPICS
Authors: NG XIN YI
Keywords: Building
PFM
Project and Facilities Management
Cheong Kok Wai David
2012/2013 PFM
Issue Date: 4-Jun-2013
Citation: NG XIN YI (2013-06-04). THERMAL COMFORT OF SLEEPING HUMAN SUBJECTS IN THE TROPICS. ScholarBank@NUS Repository.
Abstract: For a healthy and productive life, good sleep is essential, which has prompted studies on how comfortable sleep can be achieved. However, the characteristics of thermal comfort in bedrooms, occupants’ perceptions and their impact on sleep quality are not often studied. It becomes even more interesting if climatic conditions allow Naturally/Mechanically Ventilated (NMV) concepts as opposed to Air-conditioning (AC) and this becomes very significant from an energy perspective. This paper aims to investigate the effects of different supply air temperature and fan speed on thermal comfort during sleep. Objective measurements of thermal comfort were carried out during sleeping period in 1 AC and 1 NMV bedrooms over a period of 1 month. Questionnaire responses were sought from the subject at the end of the objective measurements to assess his perceptions on thermal sensation and thermal comfort of the bedrooms and he was asked to rank his sleeping condition on a scale of 1-12. While the mean bedroom temperatures in AC environments were found to be within generally recommended limits of 22.5-25.5°C, the mean NMV temperatures were not. Bed surface temperature for AC is around 29°C and for NMV is around 30.5°C. RH of NMV and AC bedrooms were within 70%, with the RH recorded in NMV bedrooms being much higher than those recorded in AC bedrooms.
URI: https://scholarbank.nus.edu.sg/handle/10635/220095
Appears in Collections:Bachelor's Theses

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