Safety Design Criteria For Industrial Plants

Author: Maurizio Cumo
Publisher: CRC Press
ISBN: 9780849363832
Size: 29.25 MB
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Concerning the letting in of air, it must take place directly from the outside or from
sectors communicating with the outside and the inlet surface must never be
smaller than that for extraction. The vents must be located so as to allow the
smoke flux to move freely towards the outside without obstacles and without
causing danger of propagation of fire. In several-storied buildings natural
ventilation can still be applied by arranging small openings for letting in and for
extraction for each floor, ...

Designing Spaces For Natural Ventilation

Author: Ulrike Passe
Publisher: Routledge
ISBN: 1136664823
Size: 75.37 MB
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For example, a loading dock should not be located next to the ventilation inlets. ...
Open-plan architecture needed for a continuous flow path through a building can
pose severe safety and fire risks as well as transport noise and sound across
buildings and thus impair quality of life, safety, privacy, and environmental quality
. ... Vertical fire and smoke spread in particular needs to be restricted, which
poses a conflict in vertically connected spaces needed for stack effect ventilation.

Fire Safety And Risk Management

Author: Fire Protection Association
Publisher: Routledge
ISBN: 1317937538
Size: 14.22 MB
Format: PDF, ePub
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Radiated heat between the fire on the floor and in the roof may intensify this effect
. There are also cases of fire spread along and within the roof structure itself, as
well as ... Ventilation. for. fire. and. smoke. control. Venting hot gases and smoke
out and away from combustible materials can prevent fire spreading. It is
particularly ... To work properly, natural ventilation depends heavily on inlet air to
replace the smoke that leaves through the vents. Without inlet air, the system will
not work.

Mine Ventilation

Author: E. De Souza
Publisher: CRC Press
ISBN: 1439833745
Size: 38.72 MB
Format: PDF, ePub
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The effect of the damper and screen located over the top each shaft was
accounted for by using a loss coefficient of 0.6 at the outlet vent boundary at the
top of the shaft. Extraction duct fans (one per shaft, used primarily to ventilate
small smoky fires lacking sufficient buoyancy to create natural ventilation airflow)
were also assumed to operate for large fires and were included in the model. The
inlet to each extraction duct was modeled as a velocity boundary with an exhaust
flow rate of ...

Hazards Xv

Author:
Publisher: IChemE
ISBN: 9780852954294
Size: 44.13 MB
Format: PDF
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In large diameter open pool fires a similar effect occurs from greater internal
radiation from mainly soot in the flame to the pool surface. The above results
show that these fires were ventilation controlled. ... This is because the pool fire
mass burn rate is surface area related and the air entrainment is related to the
ventilation air inflow area and if the air inlet area is very large relative to the pool
area then the pool fire will be closer to an open pool fire with a flat roof above the
pool but little ...

The Tall Buildings Reference Book

Author: David Parker
Publisher: Routledge
ISBN: 1136258043
Size: 32.13 MB
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opportunities presented by atrium buildings, they are often simply utilised for their
aesthetic attributes. Atria: Ventilation and Fire and Smoke Control An atrium can
be used to enhance natural ventilation, mainly through cross-ventilation and
stack effect, and is particularly effective when combined with sky courts and sky
gardens in tall buildings. However, temperature stratification and unimpeded
movement of air within the atrium potentially pose a significant fire risk; these can
be ...

Fire Safety Science

Author: Takashi Kashiwagi
Publisher: International Association for Fire Safety Science
ISBN: 9781886279001
Size: 78.47 MB
Format: PDF
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In this study, the validity of the simple two layer zone model (1), developed to
investigate the efficiency of smoke control effect by natural venting, is examined
by experiments (1) using a model atrium where the effects of heat release rate of
fire, smoke vent area and air inlet area are investigated (1). The agreement of the
two layer zone model with the experiments is not so good regarding predictions
of smoke layer depth and smoke layer temperature. This discrepancy is attributed
to ...

Fire From First Principles

Author: John Abrahams
Publisher: Routledge
ISBN: 1135805725
Size: 57.98 MB
Format: PDF
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Natural ventilation is totally responsive to the ambient conditions, and the
external weather conditions will determine the effectiveness of the ventilation
system. If the wind pressure on the outside of a vent is greater than the smoke
pressure on the inside, then fresh air might flow in through the vent, cooling the
smoke and forcing it down into the building. If the vent is in a flat roof, then the
effect of wind blowing across the opening will be a suction effect which will
improve the efficiency of ...

Environmental Design Of Urban Buildings

Author: Mat Santamouris
Publisher: Earthscan
ISBN: 1849771162
Size: 80.51 MB
Format: PDF, Mobi
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Figure 9.87 shows the perimeter design principles. The exhaust air can leave the
building either under conventional cross-ventilation (i.e. the air enters one side
and leaves via the opposite side of the plan) or by exploiting the stack effect
created by the towers (Figure 9.88). However, cross-ventilation is only effective if
windows or inlets are opened and there is sufficient pressure difference between
the windward and leeward side (i.e. there is sufficient wind). A fall-back option, for
when ...