GROUP: EM2208E4 PREPARED BY:
1. Moham Mohamad ad Amir Amirul ul Sha Shafq fq B. B. Muda (21!2!!"2#$ 2. Muha Muhamma mmad d Amin Aminudd uddin in B. B. Mohd Sani (21!""%!1"$ !. Mo Moham hamad ad &ari &aris s Bin 'ad 'adir ir (21!#%"#$ ". Ahma Ahmad d )elm )elmii Bin Bin Salim Salim (21!2#""*#$ . Mo Moham hamad ad Nor Nor Sha+a Sha+amee mee ,in Sha+ri (212"%2"$
ENDORSED BY:
______________________________ ______________________________ Name: Position: Company:
PREPARED FOR:
En. Hazran Hussin (Lecturer)
TABLE OF CONTENTS Content
Page
1
Chapter 1 Introduction Chapter 2 Cooling Load Estimation Chapter 3 Psychrometric Chart Analysis Chapter 4 System Selection Chapter 5 Ducting Chapter Discussion ! Conclusion "e#erences Appendi$
4 9 20 26 31 40 42 43
LIST OF FIGURE
&3'A11'1(2 Figue 1!1" %loor Plan #or &3'A11'1(2 Figue 1!2" %loor Plan #or La) *om 2A(2& Figue 1!3" %loor Plan #or La) *om 3A(3& Figue 2!1" Cooling Load o# Conduction in C+,P-.E" LA& 3A(3&
2
Chapter 1 Introduction Chapter 2 Cooling Load Estimation Chapter 3 Psychrometric Chart Analysis Chapter 4 System Selection Chapter 5 Ducting Chapter Discussion ! Conclusion "e#erences Appendi$
4 9 20 26 31 40 42 43
LIST OF FIGURE
&3'A11'1(2 Figue 1!1" %loor Plan #or &3'A11'1(2 Figue 1!2" %loor Plan #or La) *om 2A(2& Figue 1!3" %loor Plan #or La) *om 3A(3& Figue 2!1" Cooling Load o# Conduction in C+,P-.E" LA& 3A(3&
2
Figue 2!2" Cooling Load o# "adiation in C+,P-.E" LA& 3A(3&
/ea t 0ain in C+,P-.E" LA& 3A(3& Figue 2!3" Cooling Load o# Internal /eat Figue 2!4" Cooling Load o# In#iltration in C+,P-.E" LA& 3A(3&
entilation in C+,P-.E" LA& 3A(3& Figue 2!#" Cooling Load o# entilation .otal +erall Cooling Load in C+,P-.E" LA& 3A(3& Figue 2!6" .otal Figue 2!$" Cooling Load o# Conduction in C+,P-.E" LA& 2A(2& Figue 2!%" Cooling Load o# "adiation in C+,P-.E" LA& 2A(2& Figue 2!9" Cooling Load o# Internal /eat /ea t 0ain in C+,P-.E" LA& 2A(2& Figue 2!10" Cooling Load o# In#iltration in C+,P-.E" LA& 2A(2& Figue 2!11" Cooling Load o# entilation in C+,P-.E" LA& 2A(2&
.otal +erall Cooling Load in C+,P-.E" LA& 2A(2& Figue 2!12" .otal Figue 2!13" Cooling Load o# Conduction in LEC.-"E "++, LEEL 11 &3'A11'1(2 &3'A11'1(2 Figue 2!14" Cooling Load o# "adiation in LEC.-"E "++, LEEL 11 &3'A11'1(2 &3'A11'1(2
&3'A11' Figue 2!1#" Cooling Load o# Internal /eat 0ain in LEC.-"E "++, LEEL 11 &3'A11' 1(2 Figue 2!16" Cooling Load o# In#iltration in LEC.-"E "++, LEEL 11 &3'A11'1(2 &3'A11'1(2 Figue 2!1$" Cooling Load o# entilation in LEC.-"E "++, LEEL 11 &3'A11'1(2
.otal +erall +eral l Cooling Load in LEC.-"E "++, LEEL 11 &3'A11'1(2 &3'A11'1(2 Figue 2!1%" .otal Figue #!1 ,arinso#t Duct Calculator So#tare Figue #!2 Ducting design in C+,P-.E" LA& 3A(3& Figue #!3 Ducting design in C+,P-.E" LA& 2A(2&
&3'A11'1(2 Figue #!4 Ducting design in LEC.-"E "++, LEEL 11 &3'A11'1(2
!
CHAPTER 1 INTRODUCTION
1!0 INTRO&UCT INTRO&UCTION ION
/AC heating6 entilation6 and air conditioning is the technology o# indoor and ehi ehicu cula larr
eni eniro ronm nmen enta tall
com# com#or ort7 t7
Its Its
goal goal
is
to
pro proid idee ther therm mal
com# com#or ortt and and
accep accepta ta)l )lee indo indoor or air 8ual 8uality ity77 .his .his sytem sytem is impo importa rtant nt in the the desig design n o# resid residen entia tiall structures such as residential homes6 high'rise )uildings and liing #acilities6 medium to large industrial here sa#e and healthy )uilding conditions are regulated ith respect to temperature and humidity6 using #resh air #rom outdoors7
"
entilating or entilation is the process o# 9e$changing9 or replacing air in any space to proide high indoor air 8uality hich inoles temperature control6 o$ygen replenishment6 and remoal o# moisture6 odors6 smo:e6 heat6 dust6 air)orne )acteria6 and car)on dio$ide7 entilation remoes unpleasant smells and e$cessie moisture6 introduces outside air6 :eeps interior )uilding air circulating6 and preents stagnation o# the interior air7+ther than that6 entilation includes )oth the e$change o# air to the outside as ell as circulation o# air ithin the )uilding7 It is one o# the most important #actors #or maintaining accepta)le indoor air 8uality in )uildings7 Air conditioning is the process o# altering the properties o# air; primarily temperature an# humidity6 to a com#orta)le conditions6 typically ith the aim o# distri)uting the conditioned air to an occupied space7 In other ords6 it is a system that remoes heat #rom the air inside an occupied space6 thus loering the air temperature7 .he cooling is typically achieed through a re#rigeration cycle7
2!0 PROBLE' STATE'ENT
In this tas:6 e need to design /AC system6 including ducting6 types o# chiller and cooling load estimation on 3 di##erent room7 All the room is situated at &loc: 3 in Engineering Comple$ o# -i., Shah Alam7
3!0 OB(ECTI)E
371 .o calculate the cooling load estimation o# &ili: *uliah and Computer La) at %a:ulti *e
372 .o design a ducting #or all room 373 .o analyse the outdoor and indoor air conditions including #resh air inta:e6 supply air temperature6 supply air #lo and supply heat ratio using Pyschometric chart7
4!0 &ETAIL OF T*E ASSIGN ROO'
471 LEC.-"E "++, Leel 11 &3'A11'1(2 Bui+,ing Lo-ation= &loc: 36 %a:ulti *e72m 57?m 3m
@A #loor plan o# the room is included
Figue 1!1 %loor Plan o# &3'A11'1(2
#
472 C+,P-.E" LA& 2A(2&
Bui+,ing Lo-ation= &loc: 36 %a:ulti *e
@A #loor plan o# the room is included
Figue 1!2 %loor Plan #or C+,P-.E" LA& 2A(2&
-
473C+,P-.E" LA& 3A(3& Bui+,ing Lo-ation= &loc: 36 %a:ulti *e
@A #loor plan o# the room is included
*
Figue 1!3 %loor Plan #or C+,P-.E" LA& 3A(3&
%
CHAPTER 2 COOLING LOAD ESTIATION
271
I."+D-C.I+ .he Purpose o# cooling load estimation conducted is to calculate the pea: design loads heating( cooling6 estimate li:ely e8uipment capacity6 proide in#ormations #or /AC design such as load pro#iles and #orm the )asis #or )uilding or room energy analysis7 In this case6 the cooling load is estimated on three rooms= C+,P-.E" LA& 3A(3&6 C+,P-.E" LA& 2A(2& and LEC.-"E "++, LEEL 11 &3'A11'1(27 .he cooling load estimation is )ased on #ie aspects= conduction6 radiation6 internal heat gain6 in#iltration and entilation7 .o determine the cooling load6 there are some
1
important in#ormation in the rooms that needed such as space dimensions6 type o# all6 roomsB orientation6 num)er o# indos and its dimensions6 type and num)er o# e8uipments6 num)er and )ehaiour o# the occupants and many more7 .he standards that mostly used in ,alaysia to determine the cooling load es timation are #rom American Society o# /eating6 "e#rigerating and Air'Conditioning Engineers AS/"AE and ,alaysian Standard ,S 1525=27 In this case6 the 1>> AS/"AE %undamentals /and)oo: is used7
2!2
CO'PUTER LAB 3A3B 27171 Important In#ormation .emperatures o%
Dimensions #t
Fall
Findos
Door People Lights
E8uipments
In#iltration entilation
+utside .emperature >2 at "/ Indoor .emperature 5 at 55 "/ Space >7>55 L $ 3742 F $ ?7?1 / Door 27?322 L $ 743 / Findo 27?322 L $ 17244 / Partitions >7>55 L $ ?7?1 / 4 GH )ric: all ith cement plaster on )oth sides +rientation o# Conduction= E Fall .ype o7 3 #rom AS/"AE 1>>6 Chapter 2?6 .a)le 32 at 1 -= 74? )tu(hr7#t 27o% 74mm thic: -ncoated Single 0laJing ith +pera)le Aluminium %rame 3 pieces -= 1713 )tu(hr7#t 27o% Plyood Door Sandich 4 pieces -= 742 )tu(hr7#t 27o% um)er o# +ccupants= 4 Seated6 ery light or: %luorescent Light 2? pieces 3F each LED Pro
27172 Cooling Load Calculations
11
%igure 271= Cooling Load o# Conduction in C+,P-.E" LA& 3A(3&
%igure 272= Cooling Load o# "adiation in C+,P-.E" LA& 3A(3&
%igure 273= Cooling Load o# Internal /eat 0ain in C+,P-.E" LA& 3A(3&
12
%igure 274= Cooling Load o# In#iltration in C+,P-.E" LA& 3A(3&
%igure 275= Cooling Load o# entilation in C+,P-.E" LA& 3A(3&
%igure 27= .otal +erall Cooling Load in C+,P-.E" LA& 3A(3&
2!2
CO'PUTER LAB 2A2B 27271 Important In#ormation
1!
.emperatures o%
Dimensions #t
Fall
Findos
Door People Lights
E8uipments In#iltration entilation
+utside .emperature >2 at "/ Indoor .emperature 5 at 55 "/ Space >7>55 L $ 3742 F $ ?7?1 / Door 27?322 L $ 743 / Findo 27?322 L $ 17244 / Partitions >7>55 L $ ?7?1 / 4 GH )ric: all ith cement plaster on )oth sides +rientation o# Conduction= SF Fall .ype o7 3 #rom AS/"AE 1>>6 Chapter 2?6 .a)le 32 at 1 -= 74? )tu(hr7#t 27o% 74mm thic: -ncoated Single 0laJing ith +pera)le Aluminium %rame 3 pieces -= 1713 )tu(hr7#t 27o% Plyood Door Sandich 4 pieces -= 742 )tu(hr7#t 27o% um)er o# +ccupants= 4 Seated6 ery light or: %luorescent Light 2? pieces 3F each LED Pro
27272 Cooling Load Calculations
1"
%igure 27= Cooling Load o# Conduction in C+,P-.E" LA& 2A(2&
%igure 27?= Cooling Load o# "adiation in C+,P-.E" LA& 2A(2&
%igure 27>= Cooling Load o# Internal /eat 0ain in C+,P-.E" LA& 2A(2&
%igure 271= Cooling Load o# In#iltration in C+,P-.E" LA& 2A(2&
%igure 2711= Cooling Load o# entilation in C+,P-.E" LA& 2A(2&
1
%igure 2712= .otal +erall Cooling Load in C+,P-.E" LA& 2A(2&
2!3
LECTURE ROO' LE)EL 11 5B3A11127 27371 Important In#ormation .emperatures o% Dimensions #t "oo#
Fall
Findos
Door People Lights E8uipments
+utside .emperature >2 at "/ Indoor .emperature 5 at 55 "/ Space 372 L $ 1> F $ ?72 / Door 3 L $ 7> / Findo 3 L $ 2 / AS/"AE "oo# .ype 3 -= 721 )tu(hr7#t 27o% 4 GH )ric: all ith cement plaster on )oth sides +rientation o# Conduction= SF Fall .ype o7 3 #rom AS/"AE 1>>6 Chapter 2?6 .a)le 32 at 1 -= 74? )tu(hr7#t 27o% 74mm thic: -ncoated Single 0laJing ith +pera)le Aluminium %rame 1? pieces -= 1713 )tu(hr7#t 27o% Plyood Door Sandich 2 pieces -= 742 )tu(hr7#t 27o% um)er o# +ccupants= 4 Seated6 ery light or: %luorescent Light 1 pieces 3F each LED Pro
1#
35 sets In#iltration
Air change rate
entilation
c#m(pa$
7 eutral Pressure6 aerage constrution 1 Computer la)
27372 Cooling Load Calculations
%igure 2713= Cooling Load o# Conduction in LEC.-"E "++, LEEL 11 &3'A11'1(2
%igure 2714= Cooling Load o# "adiation i n LEC.-"E "++, LEEL 11 &3'A11'1(2
1-
%igure 2715= Cooling Load o# Internal /eat 0ain in LEC.-"E "++, LEEL 11 &3'A11' 1(2
%igure 271= Cooling Load o# In#iltration in LEC.-"E "++, LEEL 11 &3'A11'1(2
%igure 271= Cooling Load o# entilation in LEC.-"E "++, LEEL 11 &3'A11'1(2
1*
%igure 271?= .otal +erall Cooling Load in LEC.-"E "++, LEEL 11 &3'A11'1(2
2!4
SU''AR8
Compter La) 3A(3& Computer La) 2A(2& Lecture "oom Leel 11 &3'A11'1(2
.+.AL +E"ALL C++LI0 L+AD ES.I,A.I+ )tu(hr 1>4>?74 215?4712 4537>
1%
C++LI0 L+AD )tu(hr per #t2 47? 7>? >753
CHAPTER ! PS"CHROETRIC CHART ANAL"SIS
2
•
+&KEC.IE i7 .o determine the Supply Air .emperature and Supply Air#lo o# each ii7
•
designated rooms7 .o determine the "e#rigeration Load o# each designated rooms7
I,P+".A. I%+",A.I+S "ooms Parameters
C+,P-.E"
C+,P-.E"
LA& 3A(3&
LA& 2A(2&
+utside Air .emperature
)tu(hr Latent /eat 0ain6 L )tu(hr .otal /eat 0ain6 . )tu(hr Sensi)le /eat "atio
•
LEEL 11 &3' A11'1(2
>2 at "/
o% Indoor Air .emperature o% Sensi)le /eat 0ain6 S
LEC.-"E "++,
5 at 55 "/ 12?3371
1>43?755
2214575
3?5427?1 >37?>
1>4>?74
215?4712
4537>
7?>
7?>
7?4
"ES-L.S "ooms Parameters
Supply Air .emperature o% Supply Air#lo
LEC.-"E "++,
C+,P-.E" LA&
C+,P-.E" LA&
3A(3&
2A(2&
5> at > "/
5?at > "/
5> at > "/
>>557?3
>2?73
222721
21
LEEL 11 &3' A11'1(2
c#m "e#rigeration Load )tu(hr C%,( person C%,( #t2
3>4257>
3?5247?3
?>2723
15575 3731
15271 3723
471 37?
22
2!
2"
2
CHAPTER # S"STE SELECTION
•
%or LEC.-"E "++, LEEL 11 &3'A11'1(2 •
Mahine seletion. Carrier /B&P "
2#
.hroughout analysis6 the suita)le cooling system that has )een choose #or classroom leel 11' 1(2 is Air /andling -nit #rom Caie manu#acturer model &BFP 47 .he model #ul#il the to main parameter o# the analysis hich is cooling load 45636.69 btu/hr @ 13.37 kW and air#lo 2220.21 cfm @ 3772.16 m 3 /h7 .he machine selected gie the output o# cooling load 22.3kW and air#lo 4000 m3 / h7
2-
.hus6 it is su##icient enough to :eep the room to reach designing room temperature in nominal operation7 .he precise dynamic )alancing cali)ration in D&%P model producing thin lo'noise 5?d)A7 .his is ery important aspect #or teaching and learning process to )e done in the room com#orta)ly7 .he A/- design #ull#ill the speci#ication class needed hich proide air#lo 3 m 3(h 6cooling capacity 17> :F #or standard air condition6 and cooling capacity 427 :F #or #resh air condition7 Peoan-e &ata 5/o:e ou-e" 3%0)7
%igure 471= D&%&M and D%PM per#ormance data7 N1O
•
%or C+,P-.E" LA& 3A(3& and 2A(2& ,achine selection = +"* ,odel S,(D, 3 $
2*
%or )oth computer La) 2 and La) 3 e consider to use the same A/- unit #or some reason7 Same ,odel re8uired same maintenance parts thus it is also re8uired same la)or s:ills7 part o# them6 it is e##icient in term o# spare part storing and usage process as it reduce
2%
the ris: o# aste7 +"* ,odel S,(D, 3 $ has )een chose as it meets the re8uired air #lo hich is 11? m 3(h the model ith 152?74> m 3(h LA& 2 and 1>157 m 3(h La) 37 %or cooling load6 the model also succed the r8uired cooling load )y the room hich is 134 : the model ith 5>7> : La) 2 and 5714 : La) 37 Each la) ill use each A/- unit7
&i0ure ".2: 3' Model SM4/M (! 5 $ 6ehnial Speifat
!
CHAPTER $ DUCTING
!1
At all places Computer La) 2A(2&6 Computer La) 3A(3& and &3'A11'1(26 the air handler is located at one end o# the la)7 So6 e,u-ingeten,e,/+enu ,u-ting .te is applied7
Fe hae chosen the -i-u+a ,u-t ,eign rather than rectangular duct design7 .his is )ecause the pressure loss due to #riction is greater #or a rectangular duct than #or a circular duct o# the same cross'sectional area and capacity7
As re#erred to 2> AS/"AE /and)oo:6 the duct material that e used is Ga+;anie, tee+6 longitudinal seams6 4 #t7
a)solute roughness o# 73 #t7 or 73543 in77
•
Fe used ;e+o-it. e,u-tion et
Ta=+e #!1 Ducting System at Computer La) 2A(2&
&u-t Lo-ation A &
Co/ute La= 2A2B Su//+. Ai+o: 5-7 Fi-tion Lo 5in! :g!7 >2? 7 >4 71
!2
&u-t &iaete 5in!7 3475 17?
C D E % 0 / I K
>4 >4 13?? >4 41 >4 >4 >4
71 71 711 71 712 71 71 71
17? 17? 1571 17? 227 17? 17? 17?
Ta=+e #!2 Ducting System at Computer La) 3A(3&
&u-t Lo-ation A & C D E % 0 / I K
Co/ute La= 3A3B Su//+. Ai+o: 5-7 Fi-tion Lo 5in! :g!7 >>5 7 11 71 11 71 11 71 1422 711 11 71 42? 712 11 71 11 71 11 71
!!
&u-t &iaete 5in!7 347> 117 117 117 1574 117 227? 117 117 117
Ta=+e #!3 Ducting System at &3'A11'1(2
&u-t Lo-ation A & C D E %
B3A1112 Su//+. Ai+o: 5-7 Fi-tion Lo 5in! :g!7 222 71 3 725 14? 722 3 725 4 734 3 725
!"
&u-t &iaete 5in!7 175 7 1375 7 >75 7
Figue #!2 'ainot &u-t Ca+-u+ato Sot:ae
!
%igure 572 Ducting design in C+,P-.E" LA& 3A(3&
!#
%igure 573 Ducting design in C+,P-.E" LA& 2A(2&
!-
%igure 574 Ducting design in LEC.-"E "++, LEEL 11 &3'A11'1(2
!*
CHAPTER % DISCUSSION & CONCLUSION
!%
•
71 Discussion %rom the calculation a)oe6 it is shon that the cooling load #or each room indicated has identi#ied here the C+,P-.E" LA& 2A(2& has higher total cooling load compare to C+,P-.E" LA& 3A(3& and LEC.-"E "++, LEEL 11 &3' A11'1(27 In all locations indicated6 it is assumed that the all #acing hallay and staircase hae conduction7 %rom the result a)oe6 it is shon that C+,P-.E" LA& 2A(2& has higher total cooling load compare to to other locations7 .he chec: #igure here the alue o# total cooling load per #eet s8uare much achiee ithin its range #or Classroom #rom 45 to ? and #or La)oratories #rom 45 to 5 to ensure that the design cooling load o# all locations located is in its optimum alue7 It is indicated that the alue #or all locations are reached in optimum range7 A#ter the supply air#lo achiee #rom psychrometric chart analysis6 the system selection is conducted here CA""IE" D&%P4 ! D&%P4I air handling unit A/- #or LEC.-"E "++, LEEL 11 &3'A11'1(2 is selected7 %or )oth computer la)s6 +"* ,+DEL S,(D, 3$ is selected7 .he reason o# choosing )oth o# this model and )rand is )ecause they are meet its re8uirement and )oth o# the )rands are one o# the )est and competitie )rands aaila)le in the mar:et7 .he reason o# choosing Air /andling -nit A/- compared to %an Cooling -nit %C- is to centralised all control #or all the rooms since it is easy to manage the operation o# the system7 In the ducting design6 it is shon in the draing layout in Chapter 5 that )oth computer la)s has #ree return as it is indicated as con#ined space and )oth locations are not situated directly under roo#7 .he other reason is )ecause )oth computer la)s are using Air /andling -nit A/- here a room to house the system is re8uired7 .he room itsel# has a return duct that ena)les the air to channel )ac: to the system7 %ree return also can sae cost here ducting #or return air is not re8uired7
•
72 Conclusion
"
As a hole6 it is approed that the o)
REFERENCES
17 Ventilation for Accetable !n"oor Air #ualit$7 23 1st ed76 p7 37 Atlanta7 "etrieed 1th ,ay 21 #rom https=((7ashrae7org(#ile 2li)rary(docli)(777(241?1453Q347pd# 27 1>> AS/"AE %undamentals /and)oo: 1>> 37 CA""IE" SS.E, DESI0 ,A-AL >th Printing 1>2 #. AS/"AE S.ADA"D 2 23 57 %hin&'()*+,& +-ltrathin&')*+,& uen"e" Airan"lin -nit 7 2137 Carrier7 "etrieed 2th ,ay 21 #rom http=((7carrier7com7h:(comm(commQne21(2132Cat(Air2/andling 2-nit(D&%PD%P2CA.'D&%P'134'27pd#
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