In this study, the amount of generated pool fire, as a result of the release of chemicals in the case of an accident in tunnels, was simulated and the results were compared to the experimental data. At first, various amounts of spatial resolution (R*) were considered to compare the existing experimental data at different heights at the upstream, downstream and above the pool fire...

Providing a fresh and cool airflow in underground mines is one of the main concerns during mining. Destruction of support systems, the presence of undesirable objects in the airway and distortion of airflow are the parameters involved that would result in pressure loss, which would affect the ventilation network. There are a lot of research works about the ventilation network planning that cons...

According to the advance of civil engineering and transportation, the tunnel tends to increase as a number and be longer as a scale. It is divided to underground and undersea tunnel by location, and is sorted into railway and road tunnel by transportation. Channel Tunnel is world’s longest undersea railway tunnel that reaches a length of 50.45 km (1). Great Britain is connected to France by it....

A building needs to be designed for the whole period of its useful life according to its requirements. However, future climate predictions involve some uncertainty. Thus, several sustainable strategies of adaptation need to be incorporated after the initial design. In this sense, tunnel ventilation in broiler houses provides high air velocity values (2–3 m·s−1) at animal level to diminish their...

Accurate grasp of underground building environmental temperature and humidity cooling heating loads is the basis for energy-saving analysis, ventilation air conditioning system design operation control. In order to come up with a method that can quickly accurately predict potential power station traffic tunnel, this paper takes Xiangyou pumped storage tunnel as research object designs BP neural...

A study was conducted to compare the growth performance as well as blood and carcass variables of two broiler strains reared in a conventional broiler house and a modified greenhouse equipped with cooling pads and tunnel ventilation system. Eight hundred day-old chickens of two commercial strains (Ross  308 and Lohmann) were selected and placed in  8 floor pens (4 pens of  50 broilers for each ...

This paper presents a field experimental study of several participants’ evacuation behaviour in fire-induced smoke bidirectional six-lane, urban tunnel with natural ventilation. Ceiling openings vertical shafts are equipped as ventilation and provide large amount sunlight into the daytime, increasing illuminance assisting fire emergency. In this study, route choice, movement time, physical cond...

The model-scale tunnel is used in this investigation to analyze the maximum smoke temperature rise of interconnected for various longitudinal ventilation velocities, blockage ratios, and heat release rates where fire at confluence underground tunnel. results showed that velocities both ramp upstream source adjacent influenced under tunnel, ramps jointly affected rise. change depends on who more...