bs ii-presentation
TRANSCRIPT
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Amcorp Mall
1. Main commercial areas
2. Two office towers
3. Amcorp Mall Service Suites
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MECHANICALAND
AIR-CONDITIONING
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VENTILATION
• Ventilation is a process that replacing air in an enclosed space to control the temperature. “A proportion of air within the enclosed space should be continuously withdrawn and replaced by fresh air.” (Greeno, R.,1997, Building Services, technology and design)
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CENTRALIZED SYSTEM
• Relatively small building/mall• requires lower service cost and easier for monitoring • cost lesser by 10% -20% compared to individual system
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FIGURE1.0.1 Control panel for chiller
FIGURE 1.0.2 Condenser pump
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FIGURE 1.0.3 Cone diffuser
FIGURE 1.0.4 Multi-Direction
FIGURE 1.0.5 Linear diffuser
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FIGURE 1.0.6 Side-wall inlet
- Enclosed space staircase- No false ceiling
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CARPARK VENTILATION SYSTEM
• Mechanical ventilation• Input and extraction of air by air vents and the ducting
system• Vehicles will emit harmful gases pollutant, carbon
monoxide, nitrous oxides, fumes from vehicle fluids, oil and other fuels.
• Cause fire outbreak
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FIGURE 1.0.7 VentsFIGURE 1.0.8 Vents
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SINGLE ZONE CONSTANT VOLUME• Simplest system • Most suitable (operation hours)• Has an AHU • Temperature kept constant by the thermostat setting on
the cooling load of AHU.
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Fire protection system
Active fire protection method• Requires activation. Can be
manual or automatic activation.
• Examples: Fire alarms, detectors, wet & dry risers, hose reels, sprinkler system.
Passive fire protection method
• Integral component of the structural fire protection and fire safety in a building.
• Examples: Fire door, fire-resistant walls, floors.
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ACTIVE FIRE PROTECTION METHOD
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Fire extinguisher
• To put out small scale of fire to prevent escalation into full scale fire.
• Amcorp Mall uses ABC dry powder fire extinguishers.
• 5 fire extinguishers are placed in every floor in the mall.
• Supplied by Fire Fighter Sdn Bhd.
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Fire hydrant
• Consist of a system of pipe-work connected directly to the water supply mains.
• Amcorp Mall uses 2 way fire hydrant.• Distance between 2 hydrants is 70m.• Supplied by Steel Recon Industries (SRI) Sdn
Bhd.• Colour of body: Yellow. (Private system
hydrants connected to public water main.)
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2 Way Fire Hydrant (Specification obtained from http://www.sri.com.my/hydrant3.html)
• Body material: Cast Iron to BS 1561• Outlet: Copper alloy BS 1982• Test pressure: 20 bar (300 psi)• Working pressure: 15 bar (217 psi)• Finishing: Yellow
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Hose reel
• Intended for occupant to use during early stages of fire.
• Five hose reels are provided in each floor.• Supplied by Unique Fire Industry Sdn Bhd.• Made of PVC• Diameter: 25mm• Length: 30m
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Fire sprinkler system
• Designed to detect, control, suppress fire.• Warn the occupants of the occurrence of fire.• Automatic fire suppression system.• Sprinkler head acts as fire detector and
discharge point of water.
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Fire alarm
• Provide warning to people through vision and audio appliance when there is an outbreak of fire.
• Can be activated through smoke detectors.• Can also be activated from manual call point.• Each floor has five fire alarms installed.
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Fireman’s switch
• Specialized switch disconnector.• Enclosure is made of non-flammable
materials.• Used to disconnect power from high voltage
devices.• Prevent the equipments from exploding.• Painted in red so can be spotted easily.
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PASSIVE FIRE PROTECTION METHOD
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Fire Escape Staircase & Fire Door
• Fire escape staircase: Used for occupants of the building to escape from the building in the event of fire.
• Fire door: Used to reduce the spread of fire or smoke between compartments.
• The rating of Amcorp Mall’s fire door is 1 hour.
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Fireman Lift
• Enable firemen to use in order to rescue people during an event of fire in building.
• Typically a normal passenger or service lift.• Has a toggle switch.• When switch is toggled, the lifts are removed
from normal service.• In fire service mode, the lift door will not
open/close unless the fireman holds the button.
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VERTICAL
TRANSPORTATION
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ESCALATOR
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TWO-WAY TRAFFIC
PARALLEL
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ELEVATOR
LIFT
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MALL LIFT
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FIRE LIFT
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SERVICE LIFT
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LIFT PERFORMANCE
BAD VENTILATION
FAST SPEED OF LIFT DOOR
CLOSINGCAPACITY
24 PERSONS
NO HAND-
RAILING
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DISPLAY BUTTONS
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INTERNAL VIEW
INDICATORCONTROL
PANEL
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SOMETHING SPECIAL
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LIFT ARRANGEMENT
2 CAR LIFT 3 CAR LIFT
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LANDING DOORS
TWO SPEED CENTRE OPENING
SINGLE SPEED
CENTRE OPENING
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Electrical System
Generated from the power plant
Travels through a distribution grid
Supplies electrical power to the building
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Service Entrance
Supplies electrical power to the building
Grounding system current to flow into the
building
Fault protection and dissipating
induced voltages
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Electrical Room Stores electrical
equipment
Power distribution equipment
Electrical safety sign
to alert of hazards.
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Main Switch BoardService
protection device and
supply
Distributes the large incoming power supply
Providesprotection
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Miniature Circuit Breaker (MCCB)
Automatically operated
electrical switch
Protect an electrical circuit
from damage
To detect fault condition and
interrupt
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Cable management
Support insulated
electric cables
Cable Tray System
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Problems of vertical transportation
• Escalatora) No brush detectorb) Malfunction of the escalator
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• Lift
Abandoned Lifts
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No CCTV system in the lift
No Handrail in it
No door sensor
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Some certain floors cannot access
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Recommendation to Escalator Install brush detector guard Install Infrared motion
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Recommendations for Lift
• Improving good service of maintenance• Installing of handrail
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Installing of CCTV
• Using laser optic transmitter and receiver• Associated with the observation DVR
utilizing cajole link• If the light go deem, the system still can
operate
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Advantages
• Saves high installation costs, quick and easy installation, semi-permanent life span, real time transmission, high quality (DVD quality) video transmission and high reliability.
• Ensure security protection
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Installing Thru-beam sensor
• These sensors can recognize objects free of shading, reflectivity and are not influenced by second surface reflections.
• When interrupting the light beam this will cause a change in the output status of the receiver. Through-beam sensors offer the longest sensing range of up to 100 meters.
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• Provides quick snap-in installation and is very affordable
• Easily fit within a door frame or extruded metal railing.
• Secure detection for automatic door and gate systems, monitoring function in turnstiles and closing edge monitoring in elevators.
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1.Number of openingsAmcorp mall does not seem to have sufficientnumber of openings.
4.2 Ventilation4.2.1 Problems of ventilation system
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2.Harmful pollutantSince the car park is not incorporated with sufficientventilation, there is possibility that harmful pollutant suchas carbon monoxide,nitrous oxides, fumes from vehicleFluids, oil and other fuels exist in large scale.
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3. Growth of mould and mildewDestroy the general aesthetic of the building.
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4.RustAffect plumbing or pipe work that may run throughvarious rooms in the building. In the worst case, itmay also cause venting straps to malfunction.
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5. Poor air flowPoor air flow is linked to respiratory diseases suchas asthma, and can also facilitate the spread ofdiseases.
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6. Unpleasant odourThe buildup of damp and humidity in a building create anunpleasant odor. This fragrance can be particularlydifficult to get rid of, unless the air quality in the buildingis improved.
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7. High expensesAll the problems above contribute to highexpenses to maintain the building at its finest.
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CONCLUSION
- When you consider all of the negative healthimpacts and financial expenses associated withpoor ventilation, and then naturally, it is morecost-effective to ensure a building is wellventilated.
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1. Replace conventional ventilation system with impulse ventilation.
• Impulse ventilation is a system intended for the ventilation of enclosed and basement car parks without the use of ducting within the body of the car park
4.2.2 Recommendation for ventilation system
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a.Cost savings on building and mechanical equipments investment.
• Building height can be reduced due to the flexibility of the installation of the fans. Thus total air flow will decrease which help to reduce the power of the main exhaust and makeup air fans. Besides smaller mechanical fans, the gent set sizes will become smaller also.
Advantages of Impulse Ventilation
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b. Energy saving.
• Depending on the pollution level, either more impulse fans are activated to increase air mixing thereby reducing the concentration of CO gases, or the airflow rate is increased to extract the polluted air more quickly. Lower airflow rates can also reduce the amount of attenuation needed, since the rate of extract overnight can be reduced when there is very little, if any, traffic movement.
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c. Higher efficiency.
• Impulse ventilation incorporates a fully addressable fire detection system. This provides early detection of a fire and its location. Enabling the fire service to determine the most suitable route to approach the fire. Then, the impulse ventilation system will switch to smoke extract mode, thus increasing the rate of ventilation through the main extract fans and activating only the impulse fans necessary to control the flow of smoke.
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d.Space and completion period. • The smaller sized main exhaust and make up
air fans allow the use of smaller fan rooms or eliminate the need altogether. With the elimination of ductworks, the duration of ventilation work will be reduced.
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2. Major repair and preventive maintenance measure.
• Timely maintenance can effectively decrease the equipment downtime and the number of major repairs. Better conservation of mechanical ventilation system can increased life expectancy of system, thereby eliminating premature replacement of machinery and equipment. Frequent maintenance improved safety and quality conditions for everyone including worker and the occupants of the building.
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THANK YOU