Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/226601
Title: IMPACT OF EDUCATION AND REAL-TIME SENSORS ON IAQ AND THERMAL COMFORT IN APARTMENT UNITS
Authors: CHOY WAI LAM
Keywords: indoor air quality
thermal comfort
education
awareness
sensors
ventilation
behaviour
residential apartment units
satisfaction
acceptability
relative humidity
temperature
TVOC
PM1
PM2.5
PM10
CO2
Issue Date: 2022
Citation: CHOY WAI LAM (2022). IMPACT OF EDUCATION AND REAL-TIME SENSORS ON IAQ AND THERMAL COMFORT IN APARTMENT UNITS. ScholarBank@NUS Repository.
Abstract: In public residential apartments (HDBs) in Singapore, population exposure to indoor air pollutants, IAQ and thermal comfort during the pandemic are not widely studied. This study compares the IAQ performance and thermal comfort of HDB bedrooms against standards and guidelines, investigates if satisfaction scale serves as a proxy to IAQ and thermal acceptability and comfort, and evaluates the effect of education and provision of real-time sensors on awareness and ventilation behaviour. Physical measurements (temperature, relative humidity, CO2, PM1, PM2.5, TVOC concentrations), and subjective responses (thermal sensation, thermal satisfaction, IAQ satisfaction, ventilation behaviour) were collected from 11 HDB bedrooms for a week. Bedroom samples were found to have high CO2 concentrations, overly warm environments, high relative humidity, and acute PM and TVOC concentration exposure. The most frequent pollutant-causing activities were personal care habits, followed by cultural practices and lastly cleaning. Although attempts were made to investigate the relationship between IAQ satisfaction and IAQ acceptability, this study failed to establish IAQ satisfaction as a proxy for IAQ acceptability due to the lack of association with SBS symptoms at lower temperatures. However, the relationships between thermal acceptability, comfort and measurements indicate possibilities of using satisfaction as a proxy to acceptability and comfort. IAQ satisfaction and thermal comfort satisfaction were also found to be correlated. Finally, the educational intervention significantly improved IAQ awareness but failed to significantly affect perception of importance nor ventilation behaviour. Possible barriers for improving ventilation behaviour were identified.
URI: https://scholarbank.nus.edu.sg/handle/10635/226601
Appears in Collections:Bachelor's Theses

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