To reduce the concentration of volatile organic compounds (VOCs) and formaldehyde emitted from building materials and furnishings, it has been suggested that new buildings undergo a bake-out. According to the existing studies [3, 4], ventilation during a bake-out is believed to be essential for reducing the concentration of indoor air pollutants. For a practical use of bake-out, several ventila...

Currently, about 75% of Finnish reinforced polyester lamination workers are exposed to styrene concentrations exceeding the current occupational exposure limit of 20 ppm. Several measures have been proposed to control styrene exposure, but only a few of them are capable of keeping the styrene concentration below 20 ppm. The present study was carried out to evaluate current ventilation systems i...

This paper addresses the optimal design of residential ventilation systems in an apartment floor plan in Korea. The term “optimal design” refers to the selection of a ventilation method (mechanical, hybrid), type of heat recovery (total, sensible only), outdoor airflow rate, and the optimal sizing and location of supply diffusers/exhaust registers. Decision-making criteria include initial and o...

Numerical modeling of the behavior of fire and smoke within proposed building atria have revealed the possible presence of violent fire whirls or fire tornadoes induced by an inadvertent combination of ventilation and exhaust openings. Such fire vortexes can accelerate combustion up to ten times that seen during conventional fires, rapidly move fire and debris across available evacuation routes...

Heat recovery ventilation systems, because of reducing ventilation loss through recovered exhaust air, can play a good role in the effectiveness of ventilation to reduce energy use. In this paper, the impact of a heat recovery ventilator (HRV) on the energy use and indoor radon in residential buildings is investigated. This paper describes the effects of a heat recovery ventilation system on en...