Development of the Malaysia’s first satellite remote charging District Cooling Plant at Precinct #4 Putrajaya, Malaysia
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This document summarizes the development of Malaysia's first remote satellite chilled water storage system for district cooling in Putrajaya. The 100,000RT chilled water storage tank at Gas District Cooling Plant #4 will allow Plant #2 to charge chilled water overnight using excess capacity, and both plants can discharge chilled water during peak daytime loads. This innovative approach reduces electricity costs and demand, increases the cooling supply capacity of the system, and leads to better utilization of assets to reliably meet the growing cooling needs of Putrajaya's core island area.
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Semelhante a Development of the Malaysia’s first satellite remote charging District Cooling Plant at Precinct #4 Putrajaya, Malaysia
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Development of the Malaysia’s first satellite remote charging District Cooling Plant at Precinct #4 Putrajaya, Malaysia
- 1. ASIAN DEVELOPMENT BANK SOUTHEAST ASIA ENERGY EFFICIENCY INITIATIVE ENERGY WISE-EXPLORING PROSPECTS FOR DISTRICT COOLING IN SOUTHEAST ASIA PUTRAJAYA 22 OCT 2013 DEVELOPMENT OF THE MALAYSIA’S FIRST SATELLITE REMOTE CHARGING 100,000RTH CHILLED WATER STORAGE SYSTEM AT GAS DISTRICT COOLING (GDC) PLANT #4 AT LOT 4U2, PRECINCT 4, PUTRAJAYA CORE ISLAND BY IR. ARUL HISHAM BIN ABDUL RAHIM BSME, P.Eng, MIEM, MASHRAE, MACEM PRINCIPAL AHAR Consultants
- 2. CONTENTS I. II. III. IV. V. VI. VII. VIII. IX. X. NEEDS STATEMENT LOCATION METHODOLOGY LOAD PROJECTION SOLUTION BASIC CHILLED WATER STORAGE OPERATION PLANT #4 OPERATIONAL PERFORMANCE PHOTOS DURING CONSTRUCTION PLANT #2 AND Plant #4 OVERALL PERFORMANCE PARTING WORDS We ain’t sell nothing but expertise 2
- 3. NEEDS STATEMENT UTILISATION OF PLOT 4U2 FOR FUTURE COOLING LOAD OF 22,000 RT FOR CORE ISLAND OF PUTRAJAYA FROM TES TANK WITH SPACE RESERVED FOR FUTURE EXPANSION FULL UTILISATION OF GAS TURBINE AND EQUIPMENT FROM PLANT #2 AND TO REMOTELY CHARGE TES TANK AT PLANT #4 COOLING LOAD GROWTH IS ASSUMED 3,000 RT PER YEAR MINIMISE ELECTRICAL POWER IMPORT FROM TNB DURING PEAK PERIOD We ain’t sell nothing but expertise 3
- 4. LOCATION PLANT #2 PLOT 4U2 PLOT 4U2 PLANT #4 PULLMAN HOTEL We ain’t sell nothing but expertise 4
- 5. PLANT #2 CHILLED WATER PIPE RETICULATION NETWORK PLOT 4U2 PLANT #4 5
- 6. METHODOLOGY We ain’t sell nothing but expertise 6
- 7. LOAD PROJECTION @ CORE ISLAND RT Capacity Planning 4,000RT/yr growth 3,000RT/yr growth 2,000RT/yr growth 120,000 Growth Projection from Capacity Planning Study 100,000 80,000 Historical Growth is ~ 3,650 RT per year based on 22,000 RT between yr 2003 to 2009 60,000 40,000 30,000 20,000 Current Planting-up ; TES Tank or Electrical Driven Chiller Max 22,000 RT 2011 2012 2013 2014 2015 2016 2017 2018 Future 2019 2020 2021 We ain’t sell nothing but expertise 2022 2023 2024 2025 2026 2027 2028 7
- 8. SNAPSHOT OF LOAD PROFILE CORE ISLAND– MARCH 2009 PEAKING PULL DOWN LOAD LOW NIGHT LOAD BUILDINGS START OPERATION 8
- 9. PLANT #2 EQUIPMENT Equipment Quantity Generating capacity (RT) Firm Generating Capacity (RT) STEAM ABSORPTIONCHILLER 11 10 x 2 500 25 000 ELECTRICAL CHILLER 2 2 x 1 250 2 500 DIRECT FIRED CHILLER 2 2 x 1 350 2 700 ∑ = 30 200 RT Installed capacity Firm Capacity Plant Generation Ratio : 32 700 RT : 30 200 RT = 92.3 % of installed capacity We ain’t sell nothing but expertise 9
- 10. THE SOLUTION PLANT #2 WAS DESIGNED TO GENERATE A MAXIMUM CAPACITY OF 30,200RT. SINCE THERE IS VERY LITTLE NIGHT LOAD, IT IS THEORETICALLY POSSIBLE TO STORE UP TO 300,000RTH OF CHILLED WATER FROM PLANT #2. A SATELLITE STRATIFIED CHILLED WATER STORAGE SYSTEM WAS SELECTED TO BE INSTALLED AT PLANT #4 SITE TO STORE THE CHILLED WATER GENERATED FROM PLANT #2 DURING OFF-PEAK PERIOD. OPERATE PLANT #2 AT NIGHT TO STORE CHILLED WATER AT PLANT #4 OPERATE PLANT #2 AND PLANT #4 DURING DAYTIME TO MEET COOLING LOAD We ain’t sell nothing but expertise 10
- 12. P L A N E Q U I P M E N T L AYO U T ( U LT I M AT E ) We ain’t sell nothing but expertise 12
- 13. PLANT ISOMETRIC PIPING ( I N I T I A L P H A S E W I T H C H W S TO R A G E TA N K S ) We ain’t sell nothing but expertise 13
- 14. P L A N T I S O M E T R I C P I P I N G ( U LT I M AT E P H A S E ) C H W S TO R A G E TA N K S A N D E L E C T R I C C H I L L E R S We ain’t sell nothing but expertise 14
- 15. BASIC CHW TANK OPERATION CHARGING MODE WARM WATER THERMOCLINE COLD WATER PIPE OUT PIPE IN DIFFUSER PIPE SYSTEM We ain’t sell nothing but expertise 15
- 16. BASIC CHW TANK OPERATION DISCHARGING MODE WARM WATER THERMOCLINE COLD WATER PIPE IN PIPE OUT DIFFUSER PIPE SYSTEM We ain’t sell nothing but expertise 16
- 17. CHW TANK SPECIFICATIONS AND PERFORMANCE We ain’t sell nothing but expertise 17
- 18. CHW TANK THERMOCLINE We ain’t sell nothing but expertise 18
- 20. PLANT CONSTRUCTION We ain’t sell nothing but expertise 20
- 21. PLANT CONSTRUCTION We ain’t sell nothing but expertise 21
- 22. BENEFITS 40% OF PEAK LOAD BY TES 4 MW (RM 154k /MO) LESS CHILLERS OPERATE AT PEAK LOAD We ain’t sell nothing but expertise 22
- 23. PARTING WORDS DISTRICT COOLING AND THERMAL STORAGE: EXCELLENT TOOL FOR DEMAND SIDE MANAGEMENT REDUCTION IN ENERGY COST REDUCTION OF ELECTRICITY MAXIMUM DEMAND @ PEAK PERIOD INCREASE THE LOAD SUPPLY CAPABILITY AND ENHANCE THE RELIABILITY AND AVAILABILITY OF THE CHILLED WATER SYSTEM. IMPROVES REDUNDANCY OF THE SYSTEM AS LESS EQUIPMENT IS REQUIRED TO BE RUN DURING PEAK PERIOD BETTER UTILIZATION OF ASSETS GDC PUTRAJAYA PLANT #4 : IS THE FIRST REMOTE SATELLITE(2KM) CHARGING CHILLED WATER STORAGE SYSTEM PLANT IN MALAYSIA HAS THE BIGGEST CONCRETE CHILLED WATER TANK IN MALAYSIA; AND PERHAPS IN ASIA. We ain’t sell nothing but expertise 23
- 24. THANK YOU We ain’t sell nothing but expertise 24
Notas do Editor
- This is the chilled water reticulation network at Core Island. The main pipes are 900mm diameter (in blue) running from Plant 2 all the way to the Southern end. Plant #2, commissioned in 2003; designed primarily to serve Precinct 2, was extended to provide cooling to Precinct 3 and Precinct 4.
- This is the methodology during the development of Plant 4. Upon identifying the needs, we proceeded with the capacity planning study of the Core Island.
- Shown above is a typical weekday cooling load profile of the Core Island. As can be seen above, the buildings start operation of the air side at about 6am. From 6 to 8 am, that is where the maximum pull down load occurs. This load can be as high as 20% of the average load. There is very little night load as these buildings are all government offices.
- Plant #4 was planned as a hybrid plant consisting of chilled water storage and chillers. The construction of the plant is phased. For Phase 1, we install 1 unit of chilled water storage tank of nominal rated capacity of 100,000 RTh with associated booster pumpsFor Future Phases – additional 1 unit chilled water storage tank of nominal rated capacity of 100,000 RTh and/or installation of electric chillers depending on the load growth
- These are the photo after the filling up of the tank. Our contractor had to use a small boat to go around inside the tank. The middle picture is the inside of the plant building. Currently, only booster pumps are installed with pipe headers ready for connection for future phases. The bottom picture is the connection pipe 1.2m diameter to the main network pipe.
- Peaking morning pull down load is taken up by Plant #4 without having to run additional chillers from Plant #2. This has reduced the quantity of chillers required to meet the demand; hence, enhancing the reliability and availability of the overall system.Plant #4 is currently discharging about 40% of the peak period load demand. Currently, Plant #2 is supplying about 15,000RT and Plant #4 supplies averaging 10,000RT. Plant #4 also reduces the TNB electricity import of Plant #2 by 4MW. 4MW can be translated to about RM154,000 per month of maximum demand savings if we use C2 commercial Tariff at RM38.60/kW max demand.
- In summary, using district cooling and thermal storage are excellent tool for electricity demand side management. It helps in the reduction of energy cost by reducing the maximum demand charge during peak period.Having this system, increase the load supply capability and enhance the reliability and availability of the system.Thermal storage also improves the redundancy of the system as less equipment is required during peak period. Therefore, the owner can have standby equipment should any of the machine breaks down. In the case of Plant 4, assets utilization is improved as the machines are run day and night and not subjected to frequent start/stop operation.This GDC Plant 4 has made history as it is the 1st remote charging satellite chilled water storage tank in the country. Also, we believe this concrete tank is the biggest concrete tank for chilled water storage in Malaysia and perhaps in Asia.