The environmental control system in most commercial airliner cabins supplies air from shoulder and ceiling level exhausts at floor on both sides of the cabin walls. ventilation mixes to create a relative uniform temperature distribution which is great for passengers’ thermal comfort. However, mixing also enhances airborne contaminant transfer. Many displacement methods have been proposed use ai...

According to the Machinery Directive 2006/42/EC, one of the essential requirements relating to occupational safety and health hazards is to prevent dust pollution emitted by machinery during the implementation processes. Research on evaluation of emissions from machinery, according to the method of test bench using tracer gases, are currently being conducted in CIOP-PIB. This article presents s...

Displacement ventilation is a proven method of providing conditioned air to enclosed spaces with the aim deliver good quality and thermal comfort while reducing amount energy required operate system. Until now, practical applications displacement have been exclusive cooling large open high ceilings. The provision heating through has traditionally discouraged, out concern that warm supplied at f...

PURPOSE A novel pulmonary ventilation imaging technique based on four-dimensional (4D) CT has advantages over existing techniques and could be used for functional avoidance in radiotherapy. There are various deformable image registration (DIR) algorithms and two classes of ventilation metric that can be used for 4D-CT ventilation imaging, each yielding different images. The purpose of this stud...