Naturlijke ventilatie en parkeergarages. Natural ventilation in parking garages.

An update on the situation for naturally ventilating garages for motor vehicles.

Indoor and outdoor air quality investigation at 14 public places in Hong Kong.

An investigation was performed on the indoor and outdoor air quality of fourteen public places in Hong Kong with mechanical ventilation. They included restaurants, libraries, recreation places, shopping malls, sports centres and a car park. Pollutant concentrations were measured during peak traffic hours at each sampling location. States that the results showed that the indoor/outdoor ratios at public places were higher than those at home and offices.

Air quality inside high-speed passenger cars and improvement measures.

Aiming at the running property of hig-speed passenger cars, the paper discusses its indoor air quality's evaluation index and method for calculating outdoor ventilation rate. It studies the influence of the factors of outdoor air quality, outdoor ventilation rate, outdoor pressure fluctuating, drainage mode and fitment material to the indoor air quality and points out some improving measures for them.

Concentrations and sources of volatile organic compounds in urban domestic and public microenvironments.

Considered a wide range of indoor and outdoor urban microenvironments in a study of the concentrations of 15 volatile organic compounds. For most VOCs, mean concentrations in cars exceeded those at heavily trafficked roadside locations. No correlation was found between indoors and outdoors, though concentrations were higher indoors. As a consequence, in poorly ventilated buildings, indoor emission source strength is considered a more significant influence on concentrations of VOCs in indoor air than outdoor air concentrations.

Ventilation for enclosed parking garages.


A survey of exposure to Diesel engine exhaust emissions in the workplace.

Forty sites were visited during a survey of exposures to diesel engine exhaust emissions. Personal and background exposure to gaseous components, respirable dust, elemental carbon, organic carbon and total carbon were measured and details of control systems were recorded. The results show a wide spread in exposure patterns reflecting the different work practices, job categories of employees and the control methods used. However, sites where fork-lift trucks were in use consistently produced the highest exposures.

Carbon monoxide exposure from a vehicle in a garage.