Influence of staircase ventilation state on the airflow and heat transfer of the heated room on the middle floor of high rise building

Influence of relative location of two openings on fire and smoke behaviors in stairwell with a compartment

“…3c) the burning rate declines slowly. Shi et al [33] and Blinov and Khudiakov [34] have also showed that the burning rate of pool fire was significantly affected by the flame shape. As a result, a second steady stage of burning rate is reached corresponding to the presentation of ghosting flame.…”

Natural ventilation of lower-level floors assisted by the mechanical ventilation of upper-level floors via a stack

“…Combining the energy equations for the top NVF, Eq. (18), and that for the stack top opening, Eq. (19), a new balance equation is given as…”

“…In multi-story buildings, the atrium is a common structure that offers a tall space to accumulate buoyancy pressure [15,16]. Some other structures that cross over a building vertically, e.g., solar chimneys, double faç ades and even stairwells, can also be incorporated into building designs to enhance stack pressure [17,18]. The atrium or another stack-analogous structure fills with warm air from the adjoining stories and then produces a stack effect to assist the natural flow through the stories [15].…”

Effects of ventilation state of vertical shaft on fire tilt direction and smoke migration behaviours in a multi-storey building

“…In previous studies, investigations into the stack effect in building fires with a single physical structure have been reported. 4–16 Ji et al. 4 stated that the position of a single shaft opening could influence the stack effect strength and the neutral plane location, and the flame deflection would be affected by that.…”

“…Shi et al. 5,6 and Ji et al. 7 studied the effect of relative location between fire floor and multi-opening on fuel burning rate.…”