A methodology for identifying volatile organic compounds (VOCs) and determining air quality of indoor air has been developed. The air samples are collected using pump samplers by the inhabitants when they perceive odorous and/or discomfort episodes. Glass multi-sorbent tubes are connected to the pump samplers for the retention of VOC. The analysis is performed by automatic thermal desorption (A...

Conducting a full indoor air quality (IAQ) assessment in air-conditioned offices requires large-scale material and manpower resources. However, an IAQ index can be adopted as a handy screening tool to identify any premises (with poor IAQ) that need more comprehensive IAQ assessments to prioritize IAQ improvements. This study proposes a step-wise IAQ screening protocol to facilitate its cost-eff...

Smart buildings use Internet of Things (IoT) sensors for monitoring indoor environmental parameters, such as temperature, humidity, luminosity, and air quality. Due to the huge amount data generated by these sensors, analytics machine learning techniques are needed extract useful interesting insights, which provide input building optimization in terms energy-saving, occupants’ health comfort. I...

Pharmaceutical factory buildings (PFBs) are expected to provide indoor environmental performance suitable enhance workers’ well-being and productivity. This study examined the of PFBs in Nigeria towards modeling an enhanced worker’s Fourteen were purposively selected as investigation sites with a field survey conducted Southwest Nigeria. Several types equipment used obtain IAQ data (that is air...

Abstract Generally, the production of sewage sludge waste has increased due to rapid growth population. Due that, disposal method become crucial issues nowadays. Therefore, this research focuses on investigation indoor air quality fired clay brick incorporating with sludge. The bricks were incorporated 0% and 5% two type at 1050°C heating rates 1°C/min. experiment Indoor Air Quality was obtaine...

While various volatile organic compounds (VOCs) are known to show neurotoxic effects, the detailed mechanisms of the action of VOCs on the autonomic nervous system are not fully understood, partially because objective and quantitative measures to indicate neural abnormalities are still under development. Nevertheless, heart rate variability (HRV) has been recently proposed as an indicative meas...

This case study investigates the effects of ventilation intervention on measured and 12 perceived indoor air quality (IAQ) in a repaired school where occupants reported IAQ problems. 13 Occupants ́ symptoms were suspected to be related to the impurities leaked indoors through the 14 building envelope. The study’s aim was to determine whether a positive pressure of 5-7 Pa prevents 15 the infiltra...