presentasi air conditioner

8/9/2019 PRESENTASI AIR CONDITIONER

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CHILLED WATER

AIRCONDITIONING SYSTEM

Aljon Altiche

Efrel John Manlapaz

Romyrick Gliponeo

Emanoel Brimon

Kimberly Dugan


2/30

Sytem that employ water chillers are commonly calle! chilled-water

systems A it name ugget" thi ytem make ue of #ater a it

econ!ary refrigerant$ %hiller i ue! to remo&e heat from the #ater #hich i

then circulate! through other component to aborb heat from the pace$

%hille! #ater air con!itioning ytem are commonly ue! in

application that nee! large cooling capacity uch a hypermarket" in!utrial

proce" commercial air con!itioning uch a office an! factorie$ More an!

more home are uing thi ytem to air con!itione! their entire houe

becaue of it cot'effecti&ene an! no hazar! of ha&ing refrigerant pipe! all

o&er the houe$

%hille! (ater Air'con!itioning Sytem


3/30

)n a chille!'#ater ytem" the entire air con!itioner i intalle! on the roof or

behin! the buil!ing$ A (ater chiller cool #ater to bet#een *+ an! *, !egree

-ahrenheit .*$* an! /$0 !egree %eliu1$ 2he chille! #ater i then pipe!throughout the buil!ing an! connecte! to air han!ler$ 2hi can be a &eratile

ytem #here the #ater pipe #ork like the e&aporator coil in a tan!ar! air

con!itioner$ )f it3 #ell'inulate!" there3 no practical !itance limitation to the

length of a chille!'#ater pipe$

4o# it con!itione! atmopheric air5


4/30

A !e&ice that remo&e heat

from a li6ui! &ia a &apor'

compreion or aborption

refrigeration cycle$ 2hi coole!

li6ui! flo# through pipe in a

buil!ing an! pae throughcoil in air han!ler" fan'coil

unit" or other ytem" cooling

an! uually !ehumi!ifying the

air in the buil!ing$ %hiller are

of t#o type7 air coole! or #ater

coole!$

8art of a (ater %hille! Air'con!$ Sytem9

Water Chiller


5/30

8art of a (ater %hiller9

E&aporator

2he e&aporator #ork theoppoite of the con!ener" here

refrigerant li6ui! i con&erte! to

ga" aborbing heat from the air in

the compartment$

!l"id #"t

!l"id i$

R i$

R #"t


6/30

%ompreor

2he compreor compact

the refrigerant &apor an! pump it to

the re&ering &al&e$

a e6uipment that con&ert a ga

to a li6ui! to obtain either theubtance or the releae! heat

%on!ener

a1 Air'coole! con!ener ' con!ener in

#hich refrigerant flo# through the

tube an! reject heat to air that i

!ra#n acro the tube$

b1 (ater'coole! con!ener ' con!ener

that reject the heat of the refrigerant

to #ater flo#ing through it$


7/30

-or (ater %oole! %on!ener9

%ooling to#er are heat rejection!e&ice ue! to tranfer proce #ate heat

to the atmophere$ %ooling to#er may

either ue the e&aporation of #ater to reject

proce heat an! cool the #orking flui! to

near the #et'bulb air temperature or rely

olely on air to cool the #orking flui! to nearthe !ry'bulb air temperature$

a1 %ooling 2o#er

b1 %on!ener #ater pump unit

i a et of !e&ice by uing

mechanical force to mo&e thecon!ener #ater$


8/30

E:panion &al&e

a &al&e through #hich li6ui! or ga

un!er preure i allo#e! to e:pan! to a

lo#er preure an! greater &olume

;ther part of a (ater %hille! Air'con!$ Sytem9

A4< ' An air han!ler" or air han!ling unit often abbre&iate! to A4


9/30

-an'coil unit .-%


10/30

-ig ?$ Aembly Diagram9

(arm #ater from the A4<

enter the chiller$

2he chiller chille! the

#ater then procee! in

%(8 unit

%(8 unit pumpe! the

chille! #ater back to the

A4


11/30

-ig 0$ Refrigerant -lo# Diagram9

2he #ater from the cooling

to#er cool the refrigerant$

2he refrigerant #a

controlle! in the e:panion

&al&e an! return to the

e&aporator

Refrigerant enter the

compreor then procee! in

the con!ener$

%hille! #ater lea&e the

e&aporator$

2he refrigerant chill the

#ater by aborbing it heat$

(arm #ater enter the

e&aporator$


12/30-ig @$ Supply Air an! Return Air -lo#9


13/30

2he e&aporator cool #ater to about *,$2hat chille! #ater i pumpe! to

cooling coil in the area being coole!" an! a fan !ra# the air in thoe areathrough the chille! #ater coil" cooling the air$

)n comparion" #ith tan!ar! air con!itioning" the e&aporator coil !irectly

cool the air$ 2he refrigerant flo# all the #ay to the air han!ler in the area

being coole!" an! a fan !ra# the air in thoe area through the e&aporator coil"

cooling the air$

(ith chille! #ater air con!itioning" the compreor i uually mounte! on a

rack or frame" #ithin a fe# feet of the e&aporator that cool the chille! #ater$ )f

the con!ener i #ater coole!" it3 uually mounte! on the ame rack$ )f the

con!ener i air coole!" it #ill be intalle! outi!e the buil!ing$

A!&antage of %hille! (ater Air'con$ Sytem9


14/30

;ne a!&antage of chille! #ater air con!itioning i that if the chille! #ater

piping leak ome#here in the buil!ing" only #ater i lot" an! repair only

re6uire plumbing #ork$)n comparion" #ith tan!ar! air con!itioning" a leak in a refrigerant line

ini!e the buil!ing #ill probably re6uire brazing" leak teting #ith nitrogen"

e&acuation of the ytem" an! recharging #ith a refrigerant that i a lot more

e:peni&e than #ater$

Another a!&antage of chille! #ater air con!itioning i that if air top flo#ingthrough the cooling coil" the chille! #ater #ill imply return to the chiller$

Since the #ater #ill not ha&e picke! up any heat" it #ill till be col!" an! the

chiller #ill repon! by unloa!ing an! turning off$

(ith tan!ar! air con!itioning" if air top flo#ing through the cooling coil"

there i a poibility that li6ui! refrigerant #ill return to the compreor an!

!amage it$


15/30

)ntallation" 2eting" ;peration an! Maintenance

of a enno: Air %oole! %hiller


16/30

)ntallation9

?$?' ay'out an! )ntallation re6uirement

Air'coole! chiller #ith helicoi! fan uch a Ecologic or CE;SS are !eigne! for out!oor

intallation$ 8leae conult enno: prior to implementing other type of intallation$

ocate the chiller #here it i leat affecte! by #in! .intall #in!break #here #in! pee! 0$0 m>1$

2he groun! beneath the unit mut be flat" le&el an! of ufficient trength to upport the #eight of the

unit #ith it full li6ui! charge" an! the occaional preence of the uual er&ice e6uipment$ )n location

e:poe! to frot" the upporting urface" if the unit i intalle! on the groun!" mut be built on concrete

take e:ten!ing !o#n#ar! beyon! the normal !epth of frot$ )t i al#ay a!&iable to buil! a

upporting urface !etache! from the general buil!ing tructure to a&oi! tranmiion of &ibration$

;n normal application" unit rigi!ity an! point loa! poition enable intallation to minimie

&ibration$ =ibration iolator may be ue! by contractor on intallation re6uiring particularly lo#

&ibration le&el$

)t i eential that the unit be intalle! #ith ufficient free pace aroun! them to enable proper

circulation of air ejecte! by the con!ener an! to pro&i!e eay acce to all unit component forer&icing an! maintenance$ )f the air rejecte! by the con!ener encounter any obtacle$

2o pre&ent air flo# to be re&ere! !ue to pre&ailing #in!" unit cannot be completely hrou!e! #ith

a higher" uninterrupte! #in! hiel!$ )f uch a configuration cannot be a&oi!e!" an air ejection !uct mut

be intalle! at the ame height a the urroun!ing hiel!$


17/30

-ig *$ 8roper intallation of the unit9


18/30

?$0 ' (A2ER %;CCE%2);CS

2he #ater circulating pump #ill be preferably intalle! uptream o that the e&aporator>con!ener

#ill be ubjecte! to poiti&e preure$ Entering an! lea&ing #ater connection are in!icate! on the

certifie! !ra#ing ent #ith the unit$

2he #ater mut be analyze!7 the #ater circuit intalle! mut inclu!e all item neceary fortreatment of the #ater9 filter" a!!iti&e" interme!iate e:changer" blee! &al&e" &ent" iolating

&al&e etc$$$ !epen!ing on the reult of the #ater analyi$

2he glycol>#ater olution mut be ufficiently concentrate! to enure proper protection an!

pre&ent formation of ice at the lo#et out!oor air temperature e:pecte! on an intallation$ 2ake

precaution #hen uing non pai&ate! MEG antifreeze olution .Mono Ethylene Glycol or M8G

Mono 8ropylene Glycol1$

2o enable !rainage of the circuit" make ure that !rain cock are intalle! at all the lo# point of

the circuit$

2o !rain the circuit" the !rain cock mut be opene! an! an air inlet enure!$

2he minimum &olume of the chille! #ater circuit mut be calculate! #ith the formula here un!er$

)f neceary" intall a buffer tank$ 8roper operation of regulating an! afety !e&ice can only be

enure! if the &olume of #ater i ufficient$

A flo# #itch mut be intalle! on the e&aporator #ater inlet or outlet" o a to enable !etection of

#ater flo# through the heat e:changer before the unit i tarte! up$ 2hi #ill protect the

compreor againt any e&entual li6ui! lugging !uring the tarting phae an! pre&ent acci!ental

ice formation in the e&aporator" if the flo# of #ater i interrupte!$


19/30

?$@ ' EE%2R)%A %;CCE%2);CS

-irt of all" make ure that po#er upplie from the buil!ing to the place #here the unit i

intalle! are properly etablihe! an! that #ire gauge are in keeping #ith the tart up an! running

current$

%heck tightne of all electrical connection$ ou M


20/30

?$ ,' D


21/30

2eting9

8roce!ure to follo# #hen tarting a unit9

?'a1 8re the po#er F;C';-- #itch$ 2he compreor #ill only tart if the e&aporating preure i

greater than the cut'in et point of the lo# preure #itch$ %heck imme!iately the goo! rotation of

the compreor$E&aporating preure !rop tea!ily" the e&aporator emptie itelf of the li6ui! refrigerant

accumulate! in it !uring torage$ After a fe# econ!" the olenoi! &al&e open if any$

?'b1 %heck on the ight gla .uptream of the e:panion &al&e1 that the bubble !iappear

progrei&ely" in!icating a correct refrigerant charge an! #ithout non con!enable ga$ )f the

humi!ity in!icator change colour" in!icating the preence of humi!ity" replace the filter'!rier

cartri!ge if the latter i of the replaceable type$ %hecking the ub cooling after the con!ener i

recommen!e!$?'c1 %heck that" #hen the cooling loa! ha been balance! by the capacity of the unit" the chille!

li6ui! i at !eign temperature$

01 %heck the current &alue per phae on each compreor motor$

@1 %heck the current &alue per phae on each fan motor$

*1 %heck compreor !icharge temperature$

,1 %heck compreor oil pump temperature .emi'hermetic reciprocating compreor1$

H1 %heck uction an! !icharge preure an! compreor uction an! !icharge temperature$

/1 %heck chille! li6ui! entering an! lea&ing temperature$

I1 %heck out!oor air temperature$

1 %heck li6ui! refrigerant temperature at the con!ener outlet$


22/30


23/30

!a$ c#$tr#l &ress"re switch a$d therm#stat(

2he function of thee !e&ice i to enure a le&el of hea! preure compatible #ith proper unit

operation$ An increae in out!oor air temperature increae hea! preure" an! thi i maintaine!

at it re6uire! &alue by fan operation$

A$ti+ree,e +"$cti#$(2hi function only e:it on unit !eigne! for brine or glycol>#ater chilling for #hich the

freezing temperature !epen! on the concentration of the olution$ (hate&er type of !e&ice i ue!

.ee cae ? an! 01" cut'out by the antifreeze function caue imme!iate unit toppage$

CASE ( A$ti+ree,e therm#stat(

2hi !e&ice monitor chille! li6ui! temperature at the e&aporator outlet$ )t trigger #hen the

temperature goe belo# the minimum &alue . *% for #ater1$

CASE .( A$ti+ree,e &ress"re switch(

2hi monitor e&aporating preure of the refrigerant$ )t trigger #hen the temperature goe

belo# the preet minimum &alue$


24/30

?$? ' -unction of electrical component9

Electr#$ic #r cam ty&e a$ti-sh#rt cycle relay(

2hi !e&ice limit the number of compreor tart up$ %ompreor motor thermal

protection9 2hi !e&ice top the motor if #in!ing temperature rie too high an! enable it to tart

up again #hen temperature !rop back to a normal &alue$

!a$ #'er c"rre$t &r#tecti#$(%ircuit breaker !eigne! to top the fan motor in the e&ent of phae o&er current in relation

to the permitte! &alue$

C#m&ress#r m#t#r #'er c"rre$t &r#tecti#$(

%ircuit breaker !eigne! to protect each motor #in!ing againt acci!ental o&er current$

I$dicat#r li)hts(

2he electrical control bo: i fitte! #ith in!icator light enabling &iualization of the tate ofoperation or non operation of a function or gi&en circuit$

2here i alo an in!icator to ho# that the unit i po#ere! up" an emergency toppage

in!icator for each compreor" an in!icator to ho# toppage of the compreor &ia the regulating

ytem .through the main control thermotat #hich i eniti&e to chille! #ater temperature1" a run

light per compreor" an! a general fan !efault toppage in!icator .on air coole! unit1$

Chilled li/"id &"m& i$terl#c*(

2hi interlock i ma!e only if the pump i upplie! #ith the li6ui! chiller$ A oon a the uniti po#ere! up an! the remote on>off for the unit i &ali!ate!" the pump tart running$ 8rior

operation of the pump i man!atory for compreor operation$

!l#w switch +#r the chilled li/"id (

2hi control !e&ice initiate uncon!itional unit toppage a oon a the flo# of chille! li6ui!

.#ater" brine" etc$$$1 enure! by the pump become inufficient" ince thi coul! caue rapi!

e&aporator freeze up$ (hen the contact open !ue to a lack of flo# the unit mut top

imme!iately$


25/30


26/30

Maintenance9

?$+ (EEK MA)C2ECAC%E

01 ;&ercharging #ith oil can be a !angerou to a compreor a a lack of oil$ Before topping up"

contact a 6ualifie! technician$ ;nly ue oil recommen!e! by the manufacturer$

@1 %heck the oil preure$

*1 2he flo# of li6ui! refrigerant through the ight gla houl! be tea!y an! #ithout bubble$

Bubble are a ign of a lo# charge" a poible leak" or of a retriction in the li6ui! line$ %ontact a

6ualifie! technician$

,1 %heck operating preure$ )f they are higher or lo#er than thoe recor!e! #hen the machine

#a put into er&ice" ee the chapter I$

H1 )npect the entire ytem o a to !etect any e&entual abnormality9 noiy compreor" looe

caing panel" leaky pipe or ju!!ering contact$

/1 Recor! temperature" preure" !ate et time an! any other ober&ation in the er&ice log$

I1 eak !etection i recommen!e!$

?1 %heck the compreor oil le&el$ 2hi houl! be &iible through the ight gla #ith the

machine running at full loa!$ et the compreor operate for @ to * hour before a!!ing any

oil$ %heck the oil le&el e&ery @+ minute$ )f the le&el !oe not reach the le&el in!icate! abo&e"contact a 6ualifie! refrigeration mechanic$

%aution" for unit e6uippe! #ith tan!em or trio croll compreor" the oil le&el mut be

checke! ' an! &iible ' #hile the compreor are toppe!$ 2he oil le&el #ith running compreor

i not rele&ant$


27/30

?$? ACC


28/30

?$0 %EAC)CG 24E %;CDECSER9

Air c##led c#$de$sers

%lean the coil either #ith a &acuum cleaner" col! #ater" compree! air" or #ith a

oft bruh .non metallic1$ ;n unit intalle! in a corroi&e atmophere" coil cleaning

houl! be part of the regular maintenance program$ ;n thi type of intallation" all !ut

gathere! on the coil houl! be 6uickly remo&e! by regular cleaning$

M"lti-t"1e water c##led c#$de$sers


29/30

?$@ %;M8RESS;RS > ;) DRA)CAGE

;il for refrigeration e6uipment i clear an! tranparent$ )t keep it color o&er a

long perio! of operation$ Gi&en that a correctly !eigne! an! intalle! refrigeration

ytem #ill operate #ithout any problem" there i no nee! to replace the compreor

oil e&en after a &ery long perio! of operation$;il that ha become !ark in color ha been e:poe! to impuritie in the

refrigeration piping ytem or to e:cei&e temperature on the !icharge i!e of the

compreor" an! thi ine&itably impair the 6uality of the oil$ Darkening of the color of

the oil or !egra!ation of it 6ualitie can alo be caue! by the preence of humi!ity

in the ytem$ (hen the oil ha change! color or ha been !egra!e!" it mut be

change!$ )n thi e&ent" before putting the unit back into er&ice" the compreor an!the refrigeration circuit #ill ha&e to be e&acuate!$


30/30

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Iyo, naghapotkaya!!!

presentasi air conditioner

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