The document discusses the mechanical ventilation systems used in Menara MIDF and the Malaysia International Trade and Exhibition Centre (MITEC). It outlines the purposes, components, and benefits of various ventilation systems, including supply, exhaust, and pressurization systems, which help maintain air quality, temperature, and safety. Additionally, the document emphasizes the importance of regular maintenance to ensure effective indoor air quality for building occupants.

1. NIKHIL KUTLEHRIA (196030), ROHIT SAXENA (196035), SUMIT LATHWAL (196041)
GROUP – 4
There are four main purposes of ventilation:
1. Provide a continuous supply of fresh air.
2. Maintain temperature and humidity at thermal comfort levels.
3. Reduce potential risk and hazards such as fire and explosion.
4. Remove or dilute airborne contaminants
In general, the heating, ventilation, and air-conditioning system (HVAC) serves two fundamental
functions, namely air supply and air exhaust.
The supply system consists components of
• Air inlet,
• Air filtering equipment
• Heating/Cooling equipment
• Fan(s)
• Ducts
• Air distribution registers
The exhaust system consists components of.
• Air outlet
• Ducts
• Air cleaning device(s),
• Fan(s)
• Discharge stacks
FUNDAMENTAL PURPOSES -
Mechanical ventilation is driven by mechanical fans, which are either
installed directly onto walls or windows, or in air ducts to supply /exhausting
air into or from an enclosed space. It serves as the "engineered control" of
air ventilation with the purpose of bringing in "fresh" outdoor air and
exhausting "stale" indoor air, filtering and removing contaminants such as
dust, fumes, vapors, bacteria and unwanted gases, as well as maintaining a
healthy and comfortable level of temperature and humidity, therefore
reducing potential hazards and risk and providing the space user a safe and
healthy environment.
INTRODUCTION TO MECHANICAL VENTILATION

2. MENARA MIDF, MALAYSIA
NIKHIL KUTLEHRIA (196030), ROHIT SAXENA (196035), SUMIT LATHWAL (196041)
GROUP – 4
• Project Name: Menara MIDF (also known as
Malaysian Industrial Development Finance
Building)
• Year of completion: 1970
• Location: 82, Jalan Raja Chulan, 50200 Kuala
Lumpur, Malaysia
• Type: Corporate Office
• Tenure: Freehold
• No. of Blocks: 1
• No. of Storey: 23 with 2 storey below ground
basement
• Built-up: 32,462 Sq. ft.
KEY INFORMATION
FACILITIES
• Centralized air-conditioning
• 24 hour security
• CCTV surveillance
• E-card access
• Lifts
• Basement car parks
• Multi-purpose halls
• Staff lounges
• Surau
• Gymnasium
• Mini shop
• Clinic
• Bistro
• Cafeteria
TYPES OF MECHANICAL VENTILATION USED IN MENARA MIDF
BALANCED VENTILATION SYSTEM
SUPPLY VENTILATION SYSTEM IN MENARA MIDF
They use a fan to force outside air into the building while air leaks out of the building through holes
in the shell, bath- and range-fan ducts, and intentional vents. This system allow better control of the
air that enters the house than do exhaust ventilation systems. By pressurizing the building, these
systems discourage the entry of pollutants from outside and prevent back drafting of combustion
gases from fireplaces and appliances. They also allow air introduced into the house to be filtered to
remove pollen and dust or to be dehumidified.
Stairwell Pressurization System
Pressurization system is mainly used for fixed smoke
management to ensure the effectiveness of fireground operation.
Function of Stairwell pressurization System :
1. Inhibits migration of smoke to stairwells, area of refuge, elevator
shafts
2. Maintain a tenable environment in spaces with large number of
occupants and means of egress during evacuation
3. Improving the visibility for firefighting members to perform fire
rescue operation
Factors Affecting Stairwell pressurization System
1. Stack Effect
2. Inadequate Vents
3. Evacuation Time
Smoke Control By Pressurization
Mechanism of Stairwell
Pressurization System
Highlighted section indicating position of
pressurized stairwell
EmergencyStaircasewithstairwell
pressurizationsystem
Highlightedground floor plan indicated
the positionof the pressurizationstairwell
at Level 22 floor
SUPPLY VENTILATION SYSTEM EXHAUST VENTILATION SYSTEM

3. MENARA MIDF, MALAYSIA
NIKHIL KUTLEHRIA (196030), ROHIT SAXENA (196035), SUMIT LATHWAL (196041)
GROUP – 4
Components Of Stairwell Pressurization System
A. Supply Air Grille
Location of supply ventilation grilles in the interior office ice space
B. Axial Fan
Axial Pressurization Fan of
rooftop floor level 23
D. Ductwork
C. Control Panel
Control panel of stairwell
pressurization fan
Ductwork connected to the axial
fan at floor level 23 of Menara
MIDF
Connection of ductwork at
floor level 23
E. Smoke Protection and Fire Damper
Pressure relief damper
adjacent to fire toted
door
Pressure relief damper
at ANU room
Fire damperin basement
floor level 1
Mechanism of smoke protection damper
in an office building
EXHAUST VENTILATION SYSTEM IN MENARA MIDF
Exhaust ventilation system functions to exhaust odor and unwanted moisture and improve indoor air quality.
In case of Menara MIDF, exhaust system are found in toilets because it acts to remove odor and stale air and
help absorb moisture in the atmosphere which results problems like mold. It is found in toilets, AHU room and
the piping room.
Components of Exhaust Ventilation System in Menara MIDF
A. Exhaust Air Grille
Exhaust grille located or the
ceiling of the toilet
Exhaust grille located
at the AHU room
Exhaust grille located at corridor
of office building

4. MENARA MIDF, MALAYSIA
NIKHIL KUTLEHRIA (196030), ROHIT SAXENA (196035), SUMIT LATHWAL (196041)
GROUP – 4
B. Ductwork C. Exhaust Fan
Ductwork system disguise under
plaster ceiling of office
space
Exhaust fan instated at lift motor
room to circulate and extract hot
air in Menara MIDF
Exhaust grilles containing fan in
control
BALANCED VENTILATION SYSTEM IN MENARA MIDF
Balanced ventilation system can be found at the underground which is the basement car park. Effective
indoor air quality (IAQ) is a vital element in ensuring occupants health condition. Due to insufficient
natural ventilation and the limitation of infiltration and exfiltration process, mechanical ventilation plays
an important role in exhausting pollutants and contaminants which are hazardous. Two fresh air supply
fans and two exhaust fans can be found on the east and west side of the office building.
Components of Balanced Ventilation System
A. Supply and Exhaust Fan
Exhaust and supply fan located
at proximity distance between
each other
B. Outlet Duct
Cylindrical ducting across
the basement level 1 at
Menara MIDF
Rectangular duct span across
the basement level 1 at
Menara MIDF
C. Exhaust and Supply Diffuser
Position of exhaust and supply ventilation
ducting and diffuser on basement level 1
Front View of both supply and exhaust
diffuser not accessible to public
Exhaust Air Outlet located at
basement Level 1
Swab/Air Inlet located at basement
Level1
D. Outlet Grille
OutletGrille attached to the ductspan which transfers pollutant and stale air to
be exhausted outwards to the atmosphere with the presence of a filter to crop
contaminants

5. NIKHIL KUTLEHRIA (196030), ROHIT SAXENA (196035), SUMIT LATHWAL (196041)
GROUP – 4
CASE STUDY BUILDING 2:
Malaysia International Trade and
Exhibition Centre (MITEC)
MITEC, 8, Jalan Dutamas 2, Kompleks Kerajaan,
50480 Kuala Lumpur, Wilayah Persekutuan Kuala Lumpur

6. NIKHIL KUTLEHRIA (196030), ROHIT SAXENA (196035), SUMIT LATHWAL (196041)
GROUP – 4
"LARGEST TRADE AND EXHIBITION CENTRE IN MALAYSIA“
"MITEC is a magnificent showpiece that boasts state-of-
the-art facilities, capable of hosting heavy industry shows
and large-scale events.“
As quoted from MITEC's official website, building features
include:
▪ 1 million sq ft exhibition space
▪ Largest exhibition Centre in Malaysia
▪ 11 exhibition halls & 1 Multi-purpose hall
▪ Triple volume exhibition halls
▪ Largest pillar-less exhibition hall in Malaysia (equivalent
to 2 football field)
▪ Auditorium
▪ Multi-purpose hall
▪ Media facilities
▪ VIP lounges
▪ Restaurants and food outlets
INTRODUCTION-
Project Name :
Year of completion :
Location :
Type :
Architect:
Built- up :
Malaysia International Trade and
Exhibition Centre (MITEC)
2017
Kuala Lumpur, Malaysia
Exhibition Centre
RSP Architects
143,191 sq.m
TYPES OF MECHANICAL VENTILATION
USED IN MENARA MIDF -----------------
1. Supply Ventilation System
2. Extract Ventilation System
Malaysia International Trade and Exhibition Centre

7. NIKHIL KUTLEHRIA (196030), ROHIT SAXENA (196035), SUMIT LATHWAL (196041)
GROUP – 4
Level 1 floor plan indicating location of enclosed staircases
1. STAIRCASE PRESSURIZATION SYSTEM
Typical staircase
pressurization system
SUPPLY VENTILATION SYSTEM -
Malaysia International Trade and Exhibition Centre

8. NIKHIL KUTLEHRIA (196030), ROHIT SAXENA (196035), SUMIT LATHWAL (196041)
GROUP – 4
Level 1 floor plan indicating location of lift lobbies
Diagram indicating location
of duct in lift lobby
2. LIFT LOBBY PRESSURIZATION SYSTEM
SUPPLY VENTILATION SYSTEM -
Malaysia International Trade and Exhibition Centre

9. NIKHIL KUTLEHRIA (196030), ROHIT SAXENA (196035), SUMIT LATHWAL (196041)
GROUP – 4
EXTRACT VENTILATION SYSTEM -
Malaysia International Trade and Exhibition Centre

10. CONCLUSION
NIKHIL KUTLEHRIA (196030), ROHIT SAXENA (196035), SUMIT LATHWAL (196041)
GROUP – 4
Menara MIDF, Malaysia Malaysia International Trade and Exhibition
Centre (MITEC)
➢ The mechanical ventilation system used in MITEC are supply and exhaust
ventilation.
➢ These systems provide continuous channel of fresh air.
➢ These systems also accommodate fire safety features, namely staircase and lift
lobbies pressurization system.
➢ The main programme of building's space utilizes air-conditioning for fresh air and
cooling purposes for the occupants.
➢ Mainly the mechanical ventilation are found at maintenance rooms, basement car
park and utilities rooms.
➢ The Supply Ventilation System is useful to decrease the amount of contaminants
entering the office building enclosure. Air leaked out though theducts and vents allows it
tomaintain positive pressure.
➢ The setback of Exhaust VentilationSystem is that contaminants may be drawn into the
indoor environment and possibly cause condensation due to drawing in moist
outdoor air.
➢ The mechanical ventilation system is used to achieve thermal comfort by
extracting out excessive heat and humid air out of the space.
➢ The mechanical ventilation system used in MITEC are supply, exhaust and balanced
ventilation.
➢ The conduction and maintenance of the mechanical ventilation system in Menara
MIDF is at a satisfactory level and well maintained.
➢ For the occupants of the office in Menara MIDF, a complete and efficient ventilation
system is achieved to provide a comfortable and safe indoor environment with the
use of fan, ductwork, dampers, diffuser and others.
➢ With the Supply Ventilation System the building is well ventilated all day long with
the supply of fresh air from the external source of the building.
➢ To remove contaminants and odour, Exhaust Ventilation also plays a vital role in
keeping the indoor air environment safe and satisfactory.
➢ Lastly, the Balanced Ventilation System ensures equal rate of supply and expel of
air to provide movement of air in the basement floor levels of Menara MIDF which
ensures a proper ventilation of air.
➢ In order to maintain effective ventilation system in Menara MIDF, it requires regular
inspection of the maintenance of the mechanical ventilation system.