baker_chilled_plant

baker_chilled_plant - CASE STUDY ON BAKER CHILLED WATER...

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CASE STUDY ON BAKER CHILLED WATER PLANT BY: HAREESH SANKARANARAYANAN (36156812) GAURAV MEHTA (35746927) 1 | P a g e
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ABILASH.E.T. (36134693) CONTENTS 1. Introduction 2. Electrical system installed in the chilled plant 3. System protection 4. Full load current 5. Short circuit current analysis 6. Matlab simulation 7. Power quality and reliability 8. Energy Management 9. Control systems 10. Recommendations 11. Conclusion 2 | P a g e
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INTRODUCTION: The Melvin H. Baker Chilled Water Plant provides cooled water for air-conditioned buildings, with a chill water capacity of 30,000 tonnes of cooling. The peak flow rate in summer is about 16000gallons/min. This facility provides service to most indoor areas of the North Campus, except for the residence halls( Ellicott complex, Richmond and red jacket). It is located in north campus of university at buffalo. The main function of this chilled plant is to provide chilled water which is pumped through a 6 mile long underground distribution loop. The water is cooled down from 48 degrees F to 38 degrees F. This facility operates throughout the year. Hence the chilled water loop never becomes stagnant. The size of the baker chilled plant is 38,240 square feet and pump house consists of an additional 1112 sq.feet. it is constructed in 1976. The total cost of the building came out to be 8.6 Million Dollars. There are 250 employees and 25000 students involved in the baker chilled plant. The power factor of the plant is 0.9. 3 | P a g e
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Electrical system installed in the chilled plant: The chiller plant consists of two separate 34.5KV feeds coming from the nearby substation. There is a disconnect that can link the two feeders together if an outage occurs on the feed breakers inside the utility substation. Four Transformers are being fed from the 34.5KV feeds. Transformers T1 and T2 steps down the voltage to 480V to supply power like air compressors, lights and receptacles. These two transformers are both rated at 2MVA. There is also a tie breaker that links the two busses together if T1 and T2 are out of service. The transformers which are fed by the feeder are dual output transformers. They are T3 and T4. the output of these transformers are 13.8KV, 10MVA and 2400V,2MVA. The outputs of T3 and T4 again linked together with cross tie breakers, one for the 13.8KV bus and one for the 2400V bus. From here the chiller plant takes on an almost mirror image electrically of itself. The loads are as balanced as possible for the two separate busses. On half of the 13.8KV bus is a 4500HP York chiller being fed at 13.8KV. On each half of the 13.8KV bus are two transformers T6 and T7. They step down the voltage from 13.8KV to 600V. each transformer has a 2400KVA rating. Each one of these transformers feeds 2 smaller Trane chillers which are 1250HP each. On one
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This note was uploaded on 02/04/2011 for the course EE 587 taught by Professor Dr.mohammedsafiuddin during the Spring '11 term at SUNY Buffalo.

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baker_chilled_plant - CASE STUDY ON BAKER CHILLED WATER...

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