In order to study the characteristics of fire smoke spread and temperature distribution a large indoor pedestrian street under different heat release rates exhaust modes, this paper focuses on analysis spread, visibility, variation curves in an atrium. This uses numerical simulation method conduct research. PyroSim software is used calculate project, which based full-scale experimental design s...

-A chemical mass balance receptor model based on organic compounds has been developed that relates source contributions to airborne fine particle mass concentrations. Source contributions to the concentrations of specific organic compounds are revealed as well. The model is applied to four air quality monitoring sites in southern California using atmospheric organic compound concentration data ...

A set of burning experiments were conducted to investigate the influence of smoke vent height and exhausting velocity on mechanical smoke exhausting efficiency. Results have shown that the smoke exhausting process becomes more efficient due to the increased smoke vent height and the decreased exhausting velocity, which eliminate the plug-holing issue with fewer disturbances on the smoke layer i...

BACKGROUND Consensus organizations, government bodies, and healthcare organization guidelines recommend that surgical smoke be evacuated at the source by local exhaust ventilation (LEV) (i.e., smoke evacuators or wall suctions with inline filters). METHODS Data are from NIOSH's Health and Safety Practices Survey of Healthcare Workers module on precautionary practices for surgical smoke. RES...

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...

This research focusing the performance and emission characteristics study on the application of biofuel emulsions as alternate fuel used Kirloskar AV1 Direct Injection Diesel engine. Diesel engine performance was compared using different fuels, namely Diesel, Jatropha Methyl Ester and Jatropha Methyl Ester Wood Pyrolysis Oil emulsion, by applying various loads. Emission characteristics were obs...

The indoor environment of the operating room has a significant impact on health personnel. Compared with pollutants released from occupants, amount generated by surgical equipment is greater, which easily affects patients and doctors. In this study, local exhaust ventilation (LEV) applied to an LEV mounted near operation zone remove smoke equipment. CFD technique used concentration reduction po...