Download - ventilation system ppt
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8/17/2019 ventilation system ppt
1/22
{VENTILATIONMDM NURUL AINI/QUS 3206
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8/17/2019 ventilation system ppt
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Definition - a means of !an"in" t!e ai# in an en$ose%
s&ae to '
VENTILATION REQUIREMENTS
(ee& f#es! ai# fo##es&i#ato#) s)stem *#ese#+e o##et $e+e$
Of O,)"en in t!e ai#
ont#o$ a#.on Dio,i%e
ont#o$ t!e moist#e $e+e$
Loe#in" t!e !eat $e+e$Remo+e %st an% o%o#s
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8/17/2019 ventilation system ppt
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8/17/2019 ventilation system ppt
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SSTEM O4 VENTILATION
Nat#a$Venti$ation Me!ania$
Venti$ation
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8/17/2019 ventilation system ppt
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Definition - t!e oess of s&&$)in" an% #emo+in" ai#
t!#o"! an in%oo# s&ae it!ot sin" me!ania$
s)stems It #efe#s to t!e f$o of e,te#na$ ai# to an in%oo#s&ae as a #es$t of ess#e o# tem&e#at#e %iffe#enes
T!e .enefits of nat#a$ +enti$ation in$%e'-
5 Imo+e% In%oo# ai# 1a$it) IAQ7
2 Ene#") sa+in"s
3 Re%tion of "#een!ose "as emissions
8 O&ant ont#o$
9 Re%tion in o&ant i$$ness assoiate% with Sick
Building Syndrome
6 In#ease% o#:e# o%ti+it)
SSTEM O4 VENTILATION ;Nat#a$
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8/17/2019 ventilation system ppt
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8/17/2019 ventilation system ppt
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Reommen%ations f#om %esi"n "i%e$ines f#om +a#ios
.i$%in" #e"$ations s""est t!e fo$$oin"'
5 >i$%in" o#ientation an% $oation
2 >i$%in" fo#m an% %imensions
3 ?in%o t)&o$o"ies an% o&e#ations@
8 T)&es s!a&e an% siBe of o&enin"s@
9 onst#tion met!o%s an% %etai$in"@
6 U#.an &$annin" onsi%e#ation
SSTEM O4 VENTILATION - Nat#a$
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8/17/2019 ventilation system ppt
8/22SSTEM O4 VENTILATION - Nat#a$
WIND EFFECT TAC! EFFECT C"#$INATI"NEFFECT
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8/17/2019 ventilation system ppt
9/22
Definition - me!ania$ +enti$ation s)stems i#$ate f#es!
ai# sin" %ts an% fans #at!e# t!an #e$)in" on ai#f$o
t!#o"! sma$$ !o$es o# #a:Cs in a !omeCs a$$ #oof o#in%os enefits of sin" me!ania$ +enti$ation'-
5 >ette# in%oo# ai# 1a$it) ;an #emo+e &o$$tants
a$$e#"ens an% moist#e t!at an ase mo$% o.$ems2 Mo#e ont#o$ ; o+i%e o&e# f#es! ai# f$o a$on" it!
a&oiate $oations fo# inta:e an% e,!ast
3 Imo+e% omfo#t ; a$$o a onstant f$o of otsi%e ai#
into t!e !ome an% an a$so o+i%e fi$t#ation
%e!mi%ifiation an% on%itionin" of t!e inomin"otsi%e ai#
SSTEM O4 VENTILATION - Me!ania$
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8/17/2019 ventilation system ppt
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T!ese s)stems em&$o) an e$et#ia$$) %#i+en fan o# fans to
o+i%e t!e neessa#) ai# mo+ement@
T!e) a$so ens#e a s&eifie% ai# !an"e an% t!e ai# n%e#
fan ess#e an .e fo#e% t!#o"! fi$te#s T!e#e a#e t!#ee
t)&es of me!ania$ +enti$ation s)stems'
5 Nat#a$ in$et an% me!ania$ e,t#at e,!ast s)stem7
2 Me!ania$ in$et an% nat#a$ e,t#at
3 Me!ania$ in$et an% e,t#at
SSTEM O4 VENTILATION -Me!ania$
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8/17/2019 ventilation system ppt
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NATURAL INLET ME
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8/17/2019 ventilation system ppt
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ME
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ME
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8/17/2019 ventilation system ppt
14/22TYPES OF FAN
4ANS
*#o&e$$e# 4an
%oes not create much air
pressure an% !as $imite%
effet in %to#: I%ea$ fo# se
at air openings in windows
and walls.
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8/17/2019 ventilation system ppt
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TYPES OF FAN
4ANS
A,ia$ 4$o 4an
an %e+e$o& high pressure an% is
se% fo# moing air through longsections o! ductwork T!e fan is
inte"#a$ it! t!e #n of %tin" an%
%oes not #e1i#e a .ase
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8/17/2019 ventilation system ppt
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TYPES OF FAN
4ANS
ent#if"a$ 4an
an produce high pressure an% !as t!e
a&ait) fo# large olumes of ai# Most
site% to $a#"e# insta$$ations s! as air
conditioning systems It ma) !a+e one
o# to in$ets Va#ios fo#ms of im&e$$e# an
.e se$ete% %e&en%in" on t!e ai#
on%ition Va#ia.$e im&e$$e#s an% &$$e)
#atios f#om t!e %eta!e% %#i+e moto# ma:e
t!is t!e most +e#sati$e of fans
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8/17/2019 ventilation system ppt
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ELL OR *ANEL T*E
4$at o# in a +ee fo#mation to in#ease
t!e s#fae ontat a#ea A+ai$a.$e in %#) o# et +isos7
om&osition in %is&osa.$e fo#mat fo#
sim&$e fittin" it!in t!e %to#: A
#i"i% ote# f#ame is neessa#) to
e+ent f$an:in" $ea:a"e of %i#t) ai# D#) fi$te#s an .e +am $eane% to
e,ten% t!ei# $ife .t in time i$$ .e
#e&$ae% T!e +isos fi$te# is oate%
it! an o%o#$ess non-to,i non-
f$amma.$e oi$ T!ese an .e $eane%in !ot soa&) ate# an% #eoate% it!
oi$
AIR 4ILTERS
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8/17/2019 ventilation system ppt
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>A= T*E
A fo#m of fi$t#ation mate#ia$
o+i%in" a $a#"e ai# ontat a#ea
?!en t!e fan is inati+e t!e .a"
i$$ !an" $im&$) n$ess i#e
#einfo#e%
It i$$ #esme a !o#iBonta$ ofi$e
%#in" no#ma$ s)stem o&e#ation
4a.#i .a"s an .e as!e%&e#io%ia$$) an% #e&$ae%
AIR 4ILTERS
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8/17/2019 ventilation system ppt
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ROLLER T*E 4ILTER
O&e#ate% mana$$) o# .)
ess#e sensiti+e sit!
As t!e fi$te# .eomes $esseffiient #esistane to ai# f$o
in#eases
T!e ess#e effets a %eteto#
!i! en"a"es a moto# to .#in"
%on $ean fa.#i f#om t!e to&
s&oo$
Se+e#a$ &e#fo#ate% #o$$e#s an .e
se% to +ee fo#mat an% in#ease
t!e fa.#i ontat a#ea
AIR 4ILTERS
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8/17/2019 ventilation system ppt
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VISOUS T*E 4ILTER T!ese !a+e a !i"! %st #etention
a&ait) an% a#e often s&eifie%fo# a&&$iation to in%st#ia$
sitations An imo+ement on t!e &ane$
t)&e !as $ose s&ae% o##"ate%
meta$ &$ates ontinos$) sa)e%it! oi$ A #otatin" +a#iation !as
fi$te# &$ates !n" f#om !ains T!e $oe# &$ates in t!e )$e &ass
t!#o"! a .at! of oi$ !i!
#emo+es atta!e% &a#ti$es an%#es#faes t!e &$ates it! $ean
oi$
AIR 4ILTERS
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8/17/2019 ventilation system ppt
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ELETROSTATI UNIT T*E
T!is !as an ionisin" a#ea !i! "i+es
ss&en%e% %st &a#ti$es a &ositi+e
e$et#ostati !a#"e
T!ese a#e on+e)e% in t!e ai# st#eamt!#o"! meta$ &$ates !i! a#e
a$te#nate$) !a#"e% &ositi+e an%
ea#t!e% ne"ati+e
*ositi+e$) !a#"e% &a#ti$es a#e
#e&e$$e% .) t!e &ositi+e &$ates an%
att#ate% to t!e ne"ati+e &$ates
T!e ne"ati+e &$ates an a$so .e
oate% it! a t!in $a)e# of oi$ o# "e$ fo#
"#eate# #etention of %st
T!e nit an !a+e s&&$ementa#)
e$imina#) an% fina$ fi$te#s as s!on.e$o "i+in" an o+e#a$$ effiien) of
a.ot FFG
AIR 4ILTERS
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8/17/2019 ventilation system ppt
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DETERMINE T