Louver Calculations 1 n No ofoperating blowers 1 2 Pm Installed Power Kw ofmotor 15 3 Pb Absorbed power in Kw !"5 Amount of #eat generated $w%&'#r ( n)*Pm)+"15,Pb)+"12-.3/++ ( 122+0 K&'#r Cooling air flow re uired for #eat re moval Cp pecific #eatofair 1++5 K&'%g'#r P ensit4 ofair 1"11 Kg'm3 a.imum wor%ing blower ambient 6emperat0575+ deg C select 05 deg C IP55 Class 8( 9utside air temp 0+ deg C 6 6emperature gradient 5 deg C $1 :lower capacit4 3!+ m3'#r $r 21;<"!<! m3'#r 6otal Air re uired 25<;"+ m3'#r Area of opening A ( $r'*C)=- +"<1/1+5 m3's C(9pening percentage +"3 =( =elocit4 ofwind 0 m's Area of louver +"5!< m2
Sheet1Louver Calculations1nNo of operating blowers12PmInstalled
Power Kw of motor153PbAbsorbed power , in Kw9.5Amount of heat
generatedQw,kj/hr =n*(Pm*0.15+Pb*0.12)x3600=12204Kj/hrCooling air
flow required for heat reqmovalCpSpecific heat of
air1005Kj/kg/hrPDensity of air1.11Kg/m3Maximum working blower
ambient Temperature45-50deg Cselect45deg CIP55 Class F= Outside air
temp40deg CTTemperature gradient5deg CQ1Blower
capacity390m3/hrQr2187.9790237999m3/hrTotal Air
required2578.0m3/hrArea of openingA=
Qr/(C*V)0.7161052844m3/sC=Opening percentage0.3V= Velocity of
wind4m/sArea of louver0.597m2
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