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DISTRICT COOLING PLANT,the CURVE
DATE: 8TH FEBRUARY 2007
DISTRICT COOLING PLANT, the CURVE
Owner :Boustead Linear Corporation Sdn
Bhd
Location :Rooftop of the Curve,MutiaraDamansara
Peak Cooling Capacity :7,600 tonsStorage Capacity :25,920 tons-hourWater supply/return temperatures
:1.1°C / 12.2°C
SECRETARY(Salehah Bt. Md. Saad)
COOLING TECHNOLOGIST(Martin Lee)
ORGANISATION CHART FOR BOUSTEAD LINEAR CORPORATION SDN BHD DCP PLANT AT THE CURVE, MUTIARA DAMANSARA
TECHNICIAN Level 1
(Norshamsul Harmizi B. Mohd Nuji)
TECHNICIAN Level 2
(Azizul Azry B. Mohd. Ali)
TECHNICIAN Level 1
(Ahmad Syakri B. Azizan)
BOUSTEAD LINEAR CORPORATION SDN BHD
SENIOR TECHNICIAN(Daniel) SHIFT SUPERVISOR
(Wan Adnan B. Wan Mamat)
FACILITY MANAGER(LINEAR)
SHIFT SUPERVISOR(Mohd Zul B. Hj. Ismail)
SHIFT 1 8.00AM to 4.00PM
SHIFT 2 4.00PM to 12.00AM
SHIFT 3 12.00MN to 8.00AM
TECHNICIAN Level 2
(Thavaselvan A/ L Dorairaj)
PLANT MANAGER(Rosdalina Sumeri Bt. Deraman)
HT CHARGEMAN
WORK FORCE STRENGTH:BUDGETED : 11ACTUAL (2007) : 11
APPOINTED SUPERVISING ENGINEER
(MNE Engineering Sdn. Bhd.)
Updated 02/ 03/ 07 c: DCP curve\ DCP_private\ ORGANIZATIONCHART\ org2007
What is District Cooling Plant?
A district cooling plant distributes chilled water from a central plant to individual buildings through a network of underground pipes.
A single district cooling plant can satisfy the cooling needs of several buildings and customers.
Centralized production of cooling energy is more environmentally-friendly and cost-effective than distributed building-specific cooling. In addition, centralization improves operational reliability.
CUSTOMER BUILDINGS
THE CURVE : 5,500 RT
CINELEISURE : 1,400 RT
THE ROYALE BINTANG HOTEL : 340 RT
District Cooling Plant Facilities
VIEW OF PLANT - INTERIOR
CHILLERS
BASE CHILLERS : 2 nos.Capacity : 850 RT
DUAL EVAPORATOR CHILLERS : 3 nos.Capacity : Chilled water – 1224 RTGlycol chilling – 926 RT
PUMPS
COOLING TOWER - EXTERIOR(FRONT VIEW)
COOLING TOWER - EXTERIOR( TOP VIEW)
HEAT EXCHANGER (HEX)
Heat Exchangers Plates Heat Exchangers (after insulated)
– located at every Customer’s HEX Room
ICE TANK - EXTERIOR (FRONT VIEW)
ICE COIL - EXTERIOR
ICE THERMAL STORAGE
Ice Thermal Storage is the process of generating and storing ice at night to reduce kW demand and energy usage for cooling a building the next day.
ICE BUILD ON ICE COIL
ICE COIL - EXTERIOR
Why Use Ice Thermal Storage Benefits
Night time use - Lower energy rate at night.
Limit daytime peak demand charge Reduces kW demand Reduces electrical equipment,
distribution size and cost Reduce first cost (equipment cost and
installation) Reduces operating cost
Why Use Ice Thermal Storage Flexibility
Instead of an instantaneous cooling plant designed to handle the peak load, Ice Storage can be designed to operate at optimum efficiency at full and partial load conditions.
Ice Thermal StorageEXTERNAL MELT SYSTEM
-0.5
0.5
1.5
2.5
3.5
4.5
5.5
0 25 50 75 100
% of Ice Melted
LWT
(C)
Ice Thermal StorageEXTERNAL MELT SYSTEM
District Cooling Plant Systems
Chilled Water Supply Cycle
Water is chilled and then flows to
ice tanks
The water temperature is cooled down further through the external melt process and distributed to the
heat exchangers
The warm water from heat exchangers flows return to the plant’s chillers
Ice Building Process
A brine solution consisting of water and Mono Ethylene Glycol ( anti freeze agent ) is used to build ice.
This brine solution is circulated through the ice coils at the tank at negative temperatures.
The return brine solution is chilled again by the chillers and the cycle continues until the ice build is fully completed.
Ice will form in a cylindrical shape at the outer layer of the coils.
CONTROL SYSTEM
CONTROL SYSTEM
CONTROL SYSTEM
Risk ManagementRisk Management
RISK MANAGEMENT - SAFETYSPECIFIC
RISKCAUSES CONSEQUENCE
SPOSITIVE CONTROLS
INHERENT
RISK1
.FIREOUTBREAKIN MALL / PLANT/ROOFTOPAREA
Electrical short-circuit
Negligence of smokers
Poor maintenance of machineries / equipments
Not complying with safety rules & regulations
Shopping mall business interruption
Injury to public
Damage to property
Disruption to operation
Damage to equipments
Damage to documents
Constant patrol and surveillance in the mall and rooftop area by security
Regular and consistent monitoring of the plant area by DCP staff.
Conduct regular inspection on all equipments
Filing master copy of documents at LINEAR HQ office
LOW
RISK MANAGEMENT - SAFETY SPECIFIC
RISKCAUSES CONSEQUENCE
SPOSITIVE CONTROLS
INHERENT
RISK2. UN-
AUTHORIZEDACCESS
Lack of surveillance
Unlocked Doors
CCTV cameras not functional
Alarms system not turned on
Equipment sabotage
Possible injury to staff / intruder
Disruption to operations
Ensuring doors are locked at all times
Consistently monitoring by CCTV cameras
Patrol in the plant area by DCP staff
Ensure the access system and burglar alarm in good order
LOW
RISK MANAGEMENT - OPERATIONSPECIFIC
RISKCAUSES CONSEQUENCE
SPOSITIVE CONTROLS
INHERENT
RISK1
.POWERSUPPLYFAILURE
TNB supply failure
Electrical panels trip
Preventive maintenance schedule power shutdown
Disruption to operation
No supply of chilled water to customer buildings
To acquire a generator set standby unit for temporary power supply
(at least for Hotel
cooling load)
MODERATE
RISK MANAGEMENT - OPERATIONSPECIFIC
RISKCAUSES CONSEQUENCES POSITIVE
CONTROLSINHERENT RISK
2.
CHILLER FAILURE
Mechanical failure
Compressor failure
Electrical wiring / components failure
Disruption to operation
Unable to achieve cooling load demand by customer (if more than 1 no. Chiller fails at same time)
Unable to build ice sufficiently (if failure of Glycol Chiller)
Contact the contractor immediately if our Technician fail to rectify the problem (within half an hour)
Ensure proper preventive maintenance performed
Constant monitoring of the operation
MODERATE
RISK MANAGEMENT - OPERATIONSPECIFIC
RISKCAUSES CONSEQUENCE
SPOSITIVE
CONTROLSINHERENT RISK
3.
PUMP FAILURE
Mechanical failure
Motor failure
Electrical wiring / components failure
Disruption to operation
Unable to run corresponding chiller (if chiller pump fails)
Contact the contractor immediately if our Technicians fail to rectify the problem
Ensure proper preventive maintenance performed
Constant monitoring of the operation Ensure standby equipments in available status
MODERATE
RISK MANAGEMENT - OPERATIONSPECIFIC
RISKCAUSES CONSEQUENCE
SPOSITIVE
CONTROLSINHERENT RISK
4.
VALVES FAILURE
Actuator failure Pneumatic air failure Electrical wiring failure Air compressor failure
Disruption to operation Unable to control water flow and temperature
By-pass automatic mode i.e manually operate the valves. Constant monitoring of the state of operation
MODERATE
5.
AIR COMPRESSOR FAILURE
Mechanical failure Motor failure Electrical wiring / components failure
Disruption to operation
Ensure proper preventive maintenance performed Constant monitoring of the state of operation
MODERATE
RISK MANAGEMENT - OPERATIONSPECIFIC
RISKCAUSES CONSEQUENCE
SPOSITIVE
CONTROLSINHERENT RISK
6. COOLING TOWER FAILURE
Mechanical failure
Motor failure
Electrical wiring / components failure
Insufficient water supply
Disruption to operation Unable to operate chiller in normal mode (if more than 2 nos. Cooling Tower cells fail at the same time) Unable to achieve cooling load demand by customer (if more than 1 no. Chiller unable to operate) Unable to build ice sufficiently (if problem occurs during night operation )
Ensure proper preventive maintenance performed
Constant monitoring of the state of operation
MODERATE
RISK MANAGEMENT - OPERATIONSPECIFIC
RISKCAUSES CONSEQUENCE
SPOSITIVE
CONTROLSINHERENT RISK
7.
CONTROL SYSTEM FAILURE
Electrical failure
Hardware failure
Software failure
Disruption to operation
Unable to control and monitor the system.
Unable to achieve cooling load demand accurately.
Ensure back up power system is functional
Ensure back up computer is functional
Control system contractor on 24 hrs standby for emergency call
MODERATE
SUMMARY
SUMMARY OF CHILLED WATER REVENUE YEAR 2006
0
100
200
300
400
500
600
700
800
900
J an Feb Mac Apr May J une J uly Aug Sept Oct Nov DecMonth
Amou
nt (R
M '0
00)
The Curve HotelCineleisure Grand total
AverageThe Curve: RM 565,675.35Hotel: RM 47,076.81Cineleisure: RM 103,091.73
THE ENDTHE END
Prepared by :Prepared by :DCP Plant TeamDCP Plant TeamThe Curve, Mutiara The Curve, Mutiara DamansaraDamansara