Sixteen flights had been investigated for indoor air quality (IAQ) on Cathay Pacific aircraft from June 1996 to August 1997. In general, the air quality on Cathay Pacific aircraft was within relevant air quality standards because the average age of aircraft was less than 2 years. Carbon dioxide (CO2) levels on all flights measured were below the Federal Aviation Administration (FAA) standard (3...

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...

The Platform Screen Doors improve Indoor Air Quality (IAQ) in the subway station; however, and the air quality is degraded in the subway tunnel. CO2 concentration and indoor particulate matter value are high in the tunnel. The IAQ level in subway tunnel degrades by increasing the train movements. Air-curtain installation reduces dusts, particles and moving toxic smokes and permits traffic by ge...

The present study aimed at investigating the effects of ventilation strategies on indoor air quality (IAQ) in schools. Measurements thermal environment and IAQ were performed over 5 school days 45 primary classrooms Gothenburg, Sweden, grouped into three categories according to their system: category A) natural or exhaust ventilation, automated window opening; B) balanced mechanical systems wit...

Volatile Organic Compounds (VOCs) causes many health issues related to Indoor Air Quality (IAQ). The indoor air quality improvement has been instituted by various organizations based on the concentration level of different pollutants. Though VOCs in indoor air has various adverse health effects and are primary reason for sick building syndrome, there are only few abatement technologies currentl...

The mitigation of indoor air pollution sources in printing facilities is crucial for ensuring healthy environments and protecting the health well-being employees. This study assessed severity different pollutant control strategies use 22 presses Zaria metropolis, Kaduna State. adopted a quantitative method. A checklist was used to characterize selected examine on 5-point Likert scale. instrumen...

In this paper, a numerical model is presented to study the indoor air quality (IAQ) in a room with different emission sources, sinks, and ventilation methods. A computer program, ACCESS-IAQ, is developed to simulate the airflow pattern, the time history of the contaminant concentrations in the occupied zone, and the inhalation exposures. The program developed may be useful for IAQ professional ...