Columbia University Master Planning & Optimization

Transcription

1 Columbia University Master Planning & Optimization February 20, 2014 Mr. Frank Martino Vice President, Operations 1

2 Agenda Columbia University Campus District Energy Overview Evolution of Columbia s District System Development of a Master Plan Master Plan Elements Key Metrics/Savings Next Phase/Future Plans Goals 2

3 Columbia University Campus Main campus located in the Morningside Heights neighborhood of Manhattan 246 Buildings, 15.2 million square feet Residential portfolio approximately 5600 apartments Other Campuses in the Inwood neighborhood, Irvington, NY and Pallisades, NY A new campus development is underway in the Manhattanville neighborhood 3

4 Steam Plant District Energy Overview Four (4) water tube boilers 360, psi Dual Fuel Natural Gas/#2 Plant was built in 1990 Chilled Water Plant Nine (9) Chillers totaling 16,350 tons Hybrid Steam and Electric SCADA controlled 4

5 High Tension Electrical Service District Energy Overview Four (4) 13.2Kv ConEdison Feeders Four (4) 3700 Kva Paralleled Transformers 2000 Amp 4160 Collector Bus Recently Upgraded Plan to Expand to Six (6) Feeders Emergency Power 17 diesel generators Range from 90 Kw to 2250 Kw Stand alone systems 5

6 Evolution of Columbia s District System Steam Plant Original plant put in service in 1896 Coal was the single fuel source Fed a steam engine for DC power Converted to Oil in 1954 Converted to dual fuel in 1960 Replaced by a new plant in 1990 with the construction of a new science building Steam plant feeds 62 buildings 6

7 Evolution of Columbia s District System Chiller Plant Original Chillers were for a science building in 1963 Steam turbine drive approximately 2270 tons Other buildings had absorbers installed as they were built As the absorbers died, buildings started to interconnect to the original chillers A new electric chiller was installed around 1985 at the site of the original boiler plant and interconnected More steam assets were added in the old boiler plant Buildings were incrementally connected System is plagued with hydraulic and control problems Chiller plant feeds 42 buildings 7

8 Evolution of Columbia s District System Electrical Service Distributed Con Edison services around campus Mostly 208 Volts, some 480 New high tension service installed in 1990 Emergency Power Service Generators were placed per building or per project Distributed and not planned 8

9 Development of a Master Plan The Northwest Corner Building Highlighted the Need for a Master Plan 9

10 Master Plan Elements Chilled Water Steam Combined Heat & Power SCADA Thermal Storage Emergency Power Building Infrastructure Consolidation Metering 10

11 Master Plan Elements Chilled Water Develop a 20 year master plan for expansion Plan to install 5600 tons of chilled water production New production includes variable drives and pumping New cooling tower scheme Integrate a state of the art SCADA 11

12 Master Plan Elements Cooling Towers The crane had 63 feet main boom The jib was 256 feet long The radius of the overall set up was 230 feet from the center of the crane to the end of the load 12

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14 Master Plan Elements Expansion of SCADA Created front end including ancillary equipment Measuring real time production of chilled water & consumption of electricity Plant to campus load measurement 14

15 Master Plan Elements Optimization Johnson Controls and Optimum Energy are engaged by Columbia University Operator training & education leads to deep involvement Operators had ingrained attitudes about efficiency, control & operation without supporting data No visibility to data; no chilled water control room 15

16 Optimum Energy Algorithm Side by Side Dataset Comparison Master Plan Elements Optimization Initially Manual, Transitioned to Closed Loop Control Clearly Demonstrated, Measured & Verified Savings Lead to Great Pride of Ownership Among Operations Team Columbia University 8760 Load Profile; Constant Base Load Year Round; Peak Load in Summer of 12,987 Tons 16

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20 Condition Assessment Steam Backup Fuel Conversion from #6 to #2 w/2% biodiesel Controls & Metering Staff Training Replacement of combustion pieces while keeping pressure vessel intact New Economizers Forced draft fans Windbox Low NOx burners w/flue gas recirculation +2% in efficiency -30% Nox emissions Master Plan Elements Without full boiler replacement 20

21 Master Plan Elements Metering BUDA Building Utility Data Acquisition BUDA Building Utility Data Acquisition 21

22 Key Metrics - Energy Savings Major construction and renovation taking place across the campus expands our footprint by 636,047 Sqft & grows energy intensity by 3% MMBtu/SqFt Campus master planning & optimization reverse the trend, resulting in a drop of 6% in energy intensity from the 2007 baseline year and a drop of 9% in energy intensity from our high in

23 Key Metrics Cost Savings $25.00 $24.00 Cost/MMBtu Savings in 2013 vs 2007 base year are $900K annually and against the high year of 2010 are $2.5M annually. Savings are normalized for rate and based solely on energy intensity change $23.00 $22.00 $21.00 $20.00 $19.00 $

24 Next Phase / Future Plans tons in high efficiency VFD electric centrifugal Design for additional steam driven unit Rebuild steam plant Combined Heat & Power Thermal Storage Campus Distribution Emergency Power 24

25 Goals Diversity of energy sources Optimization of cost & carbon Improve campus wide reliability Enhance our University s resiliency against future potential weather events such as Superstorm Sandy 25

26 QUESTIONS 28