Smoke Ventilation Calculations - M Tower

SM&'( #()T*+AT*&) ,A+,-+AT*&)S AS(M()T/01 1.

Assumptions:

Af Y H HY P

Fire Area, Clear Height of Smoke Plume, Total height, Smoke free layer, Fire Perimeter, 2.

Dete Determ rmin inin ingg the the Heat Heat Rele Releas ase: e:

m2 m m m m

= = = = =

10 2.5 3.5 1 12

= =

'00 '000

k()m2 k(

Ce P Y +f

= = = =

0.1 12 2.5 .01

m m

!f

     

3.1

Heat "elea#e "ate $er u%it area, Total Heat "elea#e "ate of *e#ig% fire,

& !f

Dete Determ rmin inin ingg Smoke Smoke Mass Mass Flow Flow Rate Rate::

+f

        /

for large area#, Fire Perimeter, Clear height of #moke $lume, Smoke +a## Flo( "ate, 3.2

Dete Determ rmin inin ingg Plume Plume Tempe Temperat ratur ure e Rise: Rise:  

3.3

   

S$e-ifi- Heat of air, Tem$erature *iffere%-e of $lume, T# = To  T Am4ie%t Tem$erature,  To 6 Smoke Tem$erature,  T# 6

C *T

= =

1 ''3.3

k)/kg.k k

To T#

= =

31 782.3

k k

Dete Determ rmin inin ingg the Re Reui uire re! ! Air Flow Flow Rate: Rate:

9f

  

".



       

Smoke *e%#ity,

:o

=

1.0

kg)m3

"e&uire* air ;olume flo( rate, r ate, Air Cha%ge# Per Hour