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Mini project  MEC 351  : REFRIGERATION AND air conditioning system

PREPARED FOR : SIR MOHD FAHMI MD SALLEH BY : J4EM1105A (GROUP 5)

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Muhammad  norkhairie  bin  faharudin  – 2018243256 Muhammad  irfan   haikal  bin  sidik  – 2018279398 Aqil   amirin  bin  japeriden  – 2018247012 Muhammad  faie’zun  bin md  fadzil  – 2018655982

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Located in  Jalan   Mutiara   Emas  2, Mount Austin, Johor  Bahru , Johor

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10'
-o
20'
General
Office 1
Toilet
Storage
and
Print
Room
10'
72'
22'
Meeting
Room
General
Office 2
14'
10'
Private
office 1
Private
office 2
14'
10'
Toilet
Note:
wall thickness is 5"
4half brick wall with
cement plaster
height of the wall is
1 2ft
Roof is concrete roof
with suspended ceiling
boards
doors—4ft x 7 ft glass
doors
windows—6ft x 4ft
glass windows with
inside venetian blind
medium colour
all doors and windows
are glass.

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PROBLEM STATEMENT: No air conditioning system applied to the office.

OBJECTIVE: need to calculate the cooling load estimation  need to achieve humidity, temperature and  odour   need to pick the best design for ducting system need to allow air movement and distribute conditioned air within office space need to calculate the number of diffuser and total losses based on ducting design

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Identify dimension and size of each room (8 room total) Identify direction of building, wall thickness, wall dimension, roof material and floor raise Identify number of windows and door, and size of windows and door Analyse  Air  Psychrometric  for the office Calculate Cooling Load Estimation on each room via Cooling Load Estimation  Table:  Solar Heat Gain (from direction of each wall and windows) Transmission Heat Gain (from wall and partition of offices) Internal Heat Gain (from number of people and heat produced by appliances) Outside Air Sensible (outside air depending on time and season) Room Latent Heat (heat generate from number people at full capacity) Outside Air Heat (sensible and latent heat ) *   From Cooling Load Estimation Table : Calculate Grand Total Heat Calculate CFM by using formula CFM = RSH / (1.09 * 220F) on each room Obtain suitable total CFM value of 5487.91

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Design office layout together with dimension on each room Calculation of cooling load estimation on each room Determine condition of supply Identify type of system suitable for the office use Identify appropriate number of diffuser needed within required capacity Positioning diffusers on optimum location Positioning ducts system in optimum position Determine size of duct from friction method Complete the report and presentation for mini project

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Obtain CFM value Identify type of system suitable for the office use Identify throw distance on each diffusers at each placement Identify type of material suitable for the ducting build Identify diffusers positioning Draw ducting system using AutoCAD Recalculate CFM value within total diffuser Find total duct friction loss

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3
Toilet
Toilet
Room
10'
10' —4"
72'
General
Office 2
14'
private
offiee 2
14'
wall thickness is 5"
4half brick wall with
height of the wall is
Roof is concrete roof
with suspended ceiling
boards
doors—4ft x 7ft glass
doors
windows—6ft x 4ft
glass windows with
inside venetian blind
medium colour
all doors and windows
are glass.

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Room Wall Door Window Floor Occupancy Roof Lighting (fluorescent) Equipment General Office 1 Wall thickness is 5  inch 4 half brick 60lb/t2 Doors - 4ft x 7ft glass doors Inside venetian blind medium colour Windows - 6ft x 4ft glass windows Concrete floor (heat flow down) 6 persons Concrete roof with suspended ceiling boards 4 watt/ sq.ft - General Office 2 5 persons 4 watt/ sq.ft - Private Office 1 2 persons 5.8 watt/ sq.ft - Private Office 2 2 persons 5.8 watt/ sq.ft - Meeting Room 10 persons 8 watt/ sq.ft 5 units of laptops Storage And Printing Room 2 persons 4 watt/  sq.ft 1 unit of photocopy machine Receptionist 5 persons 1.5 watt/  sq.ft - Public Area 7 persons 1.5 watt/ sq.ft -

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Room RSH CFM Grand  Total Heat Gain RLH ERSH ERLH ERTH General Office 1 17641.382 735.67 26440.382 1353 18086.102 2397.48 20483.582 General Office 2 14143.7494 589.81 20483.4494 1127.5 14455.0534 1858.636 16313.6894 Private Office 1 10985.755 458.12 14539.255 451 11171.055 886.2 12057.255 Private Office 2 15102.3994 629.79 18842.0494 451 15298.8174 912.312 16211.1294 Meeting Room 26534.915 1106.54 443164.915 385605 28387.915 389957 418344.915 Storage And Printing Room 10761.7246 448.78 155142.8246 140658.1 10984.0846 141180.34 152164.4246 Receptionist 32651.1064 1361.60 71008.6064 1127.5 34874.7064 6349.9 41224.6064 Public Area 22697.2724 946.51 61505.7724 1578.5 24920.8724 6800.9 31721.7724

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HFC R-410ALine Up
for Factories&lnd Offices
We have entered an era in which being recognized as an environmentally
tesr»nsible corp»rate citizen has taken utmost immrtance.
Even when selecting air conditioners, a new featuring HFC IOA
refrigerant could be the in promoting inuge-
Product Line Up R-410A
FLCX)R ST TYPE
Capacity
ECT
TYPE
Capacity
mJCTTYPE
TYPE
tr«n
pucr CCNNECTION
DUCT TYPE
A" via duds
Nice ,
cool air in the factory
or in the cafeteria

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unn
Rurru current
currert
P r*er tutor
AAN (H)
FM StatR
380V
D.rnenea-s Ws O
raton ra
Max hter',nit
Max_ hga•atnn
3NYIG
RUR13NY1
12010)
148
50
ISHP
RURI SNYI
383-415 v.
2997
132_3
RUR18NY1
3 Phase. 4 Wres
212
1434
sa_6
24 8
m)
coe
62-sx _zo«sso
14 to 25
_o.9_o
POLYCL ESTER
319
2' to 46
.34
PS 1 B hread
70 m

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PERFORMANCE DATA
Supply Square Ceiling Diffuser
SAFID
MODEL: SCD - 4
4-WAY AIR PATTERN
Table 1
NECK SIZE
616
050 x to)
919
(225 x 225)
12x12
(300 x 300)
1Sxts
(37S 37S)
18 x 18
(450 x 450)
Neck Velocity
Pressure Drop
200
a 012
€20
112
4-9
€20
6-11
€20
312
7-13
€20
450
300
coy
3-6
€20
€20
9-14
€20
468
t2-t8
€20
675
6-23
400
0.06
100
4-8
€20
8-11
€20
12-16
22
625
16-21
26
900
20-26
SOO
0.086
6-10
to-g
27
14-19
31
781
18-24
34
22-30
600
8-11
12 -16
30
17-22
20-27
38
24-32
700
10-14
14-18
0-24
22-29
1575
26-34
BOO
200
12-15
% -20
21-26
24-31
28-36
900
0.27
18-23
42
23-29
45
26-33
48
20B
30-38

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Room CFM General Office 1 735.67 General Office 2 589.81 Private Office 1 458.12 Private Office 2 629.79 Meeting Room 1106.54 Storage And Printing Room 448.78 Receptionist 1361.60 Public Area 946.51

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Room Grand  Total Heat Gain General Office 1 26440.382 General Office 2 20483.4494 Private Office 1 14539.255 Private Office 2 18842.0494 Meeting Room 443164.915 Storage And Printing Room 155142.8246 Receptionist 71008.6064 Public Area 61505.7724

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Section CFM Duct length(ft) FPM hf /100 hf (in  w.g ) Round duct (inch) Rectangular duct A-B 6278 15.33 1500 0.1 0.01533 28 35 x 20 B-C 5331.49 9.083 1450 0.1 0.009083 26 29 x 20 C-D 458.12 11.75 800 0.1 0.01175 10 11 x 8 C-E 629.79 10.75 850 0.1 0.01075 12 15 x 8 C-F 4243.58 14.417 1400 0.1 0.014417 25 27 x 20 F-G 1106.54 11 1000 0.1 0.011 15 25 x 8 F-H 589.81 11.5 825 0.1 0.0115 11 13 x 8 F-I 2547.23 10.33 1200 0.1 0.01033 20 17 x 20 I-J 448.78 11.33 790 0.1 0.01133 10 11 x 8 I-K 2098.45 9 1180 0.1 0.009 18 14 x 20 K-L 735.67 11.75 900 0.1 0.01175 13 18 x 8 K-M 1361.60 12.92 1075 0.1 0.01292 15 28 x 8 Total Major Loss = 0.13916  w.g

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In conclusion, air conditioning can be defined as a system for controlling the humidity, ventilation, and temperature in a building or vehicle, typically to maintain a cool atmosphere in warm conditions. Air conditioner also is a treatment of indoor air to control certain conditions required for human comfort. The desirable conditions may be temperature, humidity, dust particle level, odor level, and air motion. It is known that the physical properties of air can be controlled by cooling, heating, humidification, and dehumidification. HVAC is an important part of residential structures such as single-family homes, apartment buildings, hotels, and senior living facilities, medium to large industrial and office buildings such as skyscrapers and hospitals, vehicles such as cars, trains, airplanes, ships and submarines, and in marine environments, where safe and healthy building conditions are regulated with respect to temperature and humidity, using fresh air from outdoors. In this case, we are required to design a complete air conditioning system in an office building. Based on this project, there are a few of knowledge can be learned. One of the knowledge is to design a complete air conditioning system for an office building. Lastly, we also learned to use the AUTOCAD to create this mini project and help to design a floor plan of office building.

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Energuide (N.D), “How much power does a computer use? And how much CO2 does that represent?” Available online :  https://www.energuide.be/en/questions-answers/how-much-power-does-a-computer-use-and-how-much-co2-does-that-represent/54/  [Accessed July 15 2021] Saha.B ., 2018, “Air Conditioning: Definition, Factors and Types | Mechanical Engineering” Available online :  https://www.engineeringenotes.com/mechanical-engineering/air-conditioning/air-conditioning-definition-factors-and-types-mechanical-engineering/36056  [Accessed July 15 2021] Daikin Malaysia, 2020, “FFN-C/ FCN-F SERIES (R410A)”  https://www.daikin.com.my/daikin_products/ffn-c-fcn-f-series-r410a/  [Accessed July 15 2021] Bright Hub Engineering, 2010, “What is packaged air conditioner? Types of Packaged air Conditioners” Available online :  https://www.brighthubengineering.com/hvac/61457-packaged-air-conditioners-types-of-packaged-ac/  [Accessed July 15 2021] Daikin global, 2021, “Packaged air conditioners for facilities & factories | For precise control of air and temperature to help preserve accurate results and product quality | Air conditioning and refrigeration” Available online :  https://www.daikin.com/products/ac/lineup/packaged/  [Accessed July 15 2021] Package air conditioner parts and functions, “Air Conditioning Systems Tips and Guide” Available Online :  https://www.airconditioning-systems.com/package-air-conditioner.html  [Accessed July 15 2021] Admin_Temp.A ., 2020, “The Best Type Of  Aircon  For Offices” Available online :  https://www.daikin.com.my/blog/tips/2020/01/24/type-of-aircon-offices/  [Accessed July 13 2021] Reddy.S , “Uses of AutoCAD” Available online :  https://www.educba.com/uses-of-autocad/  [ Accessed  July 15 2021 ] https:// www.energyrating.gov.au/sites/default/files/documents/sb200302-photocopiers_0.pdf

Mini project 
MEC 351 : REFRIGERATION AND air conditioning system  


 Energuide (N.D), “How much power does a computer use? And how much CO2 does that represent?” Available online :  https://www.energuide.be/en/questions-answers/how-much-power-does-a-computer-use-and-how-much-co2-does-that-represent/54/  [Accessed July 15 2021] Saha.B ., 2018, “Air Conditioning: Definition, Factors and Types | Mechanical Engineering” Available online :  https://www.engineeringenotes.com/mechanical-engineering/air-conditioning/air-conditioning-definition-factors-and-types-mechanical-engineering/36056  [Accessed July 15 2021] Daikin Malaysia, 2020, “FFN-C/ FCN-F SERIES (R410A)”  https://www.daikin.com.my/daikin_products/ffn-c-fcn-f-series-r410a/  [Accessed July 15 2021] Bright Hub Engineering, 2010, “What is packaged air conditioner? Types of Packaged air Conditioners” Available online :  https://www.brighthubengineering.com/hvac/61457-packaged-air-conditioners-types-of-packaged-ac/  [Accessed July 15 2021] Daikin global, 2021, “Packaged air conditioners for facilities & factories | For precise control of air and temperature to help preserve accurate results and product quality | Air conditioning and refrigeration” Available online :  https://www.daikin.com/products/ac/lineup/packaged/  [Accessed July 15 2021] Package air conditioner parts and functions, “Air Conditioning Systems Tips and Guide” Available Online :  https://www.airconditioning-systems.com/package-air-conditioner.html  [Accessed July 15 2021] Admin_Temp.A ., 2020, “The Best Type Of  Aircon  For Offices” Available online :  https://www.daikin.com.my/blog/tips/2020/01/24/type-of-aircon-offices/  [Accessed July 13 2021] Reddy.S , “Uses of AutoCAD” Available online :  https://www.educba.com/uses-of-autocad/  [ Accessed  July 15 2021 ] https:// www.energyrating.gov.au/sites/default/files/documents/sb200302-photocopiers_0.pdf  