In this paper, the influence of the gas exchange process on the diesel engine thermal overload is provided. Main components involved in the gas exchange process are discussed. The ambient conditions, the turbocharger performance, and the valve timing that affect the gas exchange process have been investigated. Experiments were conducted to simulate ambient conditions at different geographical l...

Smoke inhalation is a major cause of death in fire accident. Three quarters building casualties were the result excessive smoke inhalation, even with presence control system. One main reasons to high percentage fatality poor circulation and exhaustion smoke. A proposed system, including an integrated ACMV exhaust additional louver, will be simulated compared current conventional approach, fixed...

To figure out the influence of smoke-proof air curtains on law tunnel fire smoke spread, this paper set a simulated scene passenger bus with source power 25 MW in Fire Dynamics Simulator (FDS), software for stimulating dynamics, to study spread tunnels. At first, analyzed distribution temperature, visibility, and CO concentration each area under conditions different jet velocities angles curtai...

This paper discusses the numerical study of the effectiveness of atrium smoke exhaust systems. This study is part of a project initiated by ASHRAE and the National Research Council of Canada (NRCC), in which both physical and numerical techniques were employed to determine the effectiveness of such systems and to develop guidelines for their design. This paper presents numerical predictions obt...

The tunnel width and the transverse fire’s position both impact heat exhaust coefficient, which is a critical component of lateral smoke in fires. In this research, location fire source are varied to analyze coefficient exhaust. When increases, there noticeable decrease longitudinal temperature entrained air layer plume. Furthermore, coefficients reduced. An increase distance between vent cause...