Solving IAQ problems requires strategies and tools for making observations and measurements. This article covers the tools a future article will impart strategies for using them.
An experimental method for the determination of the internal diffusion coefficient (D) and partition coefficient (ke) of volatile organic compounds (VOCs) is developed for dry building materials (such as carpet, vinyl flooring. plywood, etc.). The method is used to determine D and k0 for four VOCs (toluene, nonane. decane, and undecane ) through the backing material of a carpet specimen, for four vocs (ethylbenzene, nonane, decane, and undecane) through a floor tile specimen, and three vocs (cyclohexene, ethylbenzene. and decanc) through a plywood specimen.
Energy efficient ventilation has a key role to play in achieving the Government's objectives for reducing carbon-dioxide emissions. Ian Andrews discusses the background to the issues.
HVAC system outdoor airflow rates are usually measured and set at the air-handling unit. The effectiveness of an HVAC system at delivering the outdoor air to the occupied spaces of a building is varied and often disputed. To investigate the delivery of outdoor air to the occupied spaces of a variable-air-volume system, ASHRAE Technical Committee 9.1, Large Building Air Conditioning Systems, funded Project 687- TRP, Minimum Ventilation Airflow Rates with VAV Systems. This article presents some of the information collected during that project.
ASHRAE is developing a standard to ensure cabin air quality 1) is safe for flight and occupants; 2) minimizes the potential for adverse health effects; and 3) is comfortable to occupants. ASHRAE Technical Committee 9.3, Transportation Air Conditioning, issued a work statement for the study, "Relate Air Quality and Other Factors to Symptoms Reported by Passengers and Crew on Commercial Transport Category Aircraft." The study's purpose is to support the development of ASHRAE Standard Project Committee 161P, Air Quality in Transport Category Commercial Aircraft.
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