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University of Wisconsin - Madison Utility Master Plan Status Report April 2005 Current Campus Master Plan Agenda Summary of Existing Utilities Planning Criteria Load Management Load Projections Options for Exploring Utilities Included High Pressure Steam and Condensate Low Pressure Steam and Condensate Chilled Water Compressed Air Electric Power IT Systems Domestic Water Sanitary Sewer Storm Sewer Existing Campus Utility Services Steam and Condensate Piping Distribution Map Existing Campus Utility Services Chilled Water Piping Distribution Map Existing Campus Utility Services Compressed Air Piping Distribution Map Existing Campus Utility Services Electrical Distribution Map Existing Campus Utility Services Additional piping Water Distribution Map in Eagle Heights Additional piping Sanitary Sewer Distribution Map in Eagle Heights Additional piping Storm Sewer Distribution Map in Eagle Heights Existing Campus Utility Services Composite Utility Distribution Steam and Condensate Overview System Type 70% Walkable Tunnel 28% Box Conduit 2% Direct Buried Age Distribution (over 25 miles of piping) 1% +80 Years 2% 60-80 Years 8% 40-60 Years 16% 20-40 Years 22% 0-20 Years 50% Unknown Chilled Water Overview System Type 15% Walkable Tunnel 0% Box Conduit 85% Direct Buried Age Distribution (over 8 miles of piping) 45% 20-40 Years 55% 0-20 Years Thermal Utility Upgrades Correct Deficiencies Upgrade Control Systems Alleviate Distribution Piping Bottlenecks Replace Aging Equipment Cleanup Charter Street site???? Add capacity to accommodate future growth Add energy meters at all significant buildings Thermal Utility Production Overview Walnut Street Plant 600,000 #/hr steam (heating for ~7,500 homes) 18,000 tons chilled water (cooling for ~9,000 homes) Charter Street Plant 800,000 #/hr steam (heating for ~9,000 homes) 26,000 tons chilled water (cooling for ~13,000 homes) 9 MWe Electric Production (power for ~900 homes) Thermal Utility Production Overview West Campus Cogeneration Facility 500,000 #/hr steam (heating for ~6,250 homes) 20,000 tons chilled water (cooling for ~10,000 homes) 150 MWe Electric Production (power for ~15,000 homes) supplied to Madison area grid Electrical Substation Overview East Campus Substation 14.0 MVA (~1,400 homes) West Campus Substation 14.0 MVA (~1,400 homes) Charter Street Substation 14.3 MVA (~1,400 homes) Walnut Street Substation 112 MVA (~11,200 homes) Randall Substation 7 MVA (~700 homes) Kohl Center Switching Stn 28.6 MVA (~2,900 homes) Athletic Off. Switching Stn 18.8 MVA (~1,900 homes) Total Capacity 208.7 MVA (~20,900 homes) 20,000 homes ≈80,000 people or approximately the size of Janesville, WI 1 MVA = million volt-amperes (Size of electrical facilities is listed in MVA, just as size of a storage tank might be listed in gallons.) Electrical Distribution Overview Installed in Ductbank and Manhole System ~230,000 circuit feet (~175 miles of wire with 4 wires per circuit) Age Distribution 8% +40 Years 44% 20-40 Years 23% 0-20 Years 25% Undetermined Age Electrical Distribution Upgrades Reinforce the system to improve reliability Recircuit/re-cable overloaded circuits Relocate cables from steam tunnels Separate instances where primary and backup feeders are in the same ductbank and manholes Improve system monitoring to mitigate outages Add substation capacity for reliability/flexibility and cost control IT/Signal Overview Systems include: Computer networks Internet access Electronic file storage Email Installed in Ductbank and Manhole System +180 Manholes +10 Miles of Underground Fiber Optic Ductbank +200 Building Service Entrances Age Distribution ~10% +20 Years ~90% 0-20 Years IT/Signal Upgrades Relocate cabling from steam tunnels to new ductbank locations 21st Century Network Upgrade network speed to a 10-gigabyte backbone speed Upgrade security Reinforce the capacity of the three super nodes powering the network Add access points for wireless access Domestic Water Overview System Summary 147,000 ft (~28 miles) of pipe ranging from ¾” to 24” 25 Manholes 144 Hydrants 907 Water Valves Age Distribution 7% 80 – +100 years 55% 40 –80 years 19% 20 – 40 years 19% 0 – 20 years Water Supply Sources City of Madison Installation of water main and fire hydrant Village of Shorewood Hills Direct connection to City mains Water Usage 3,204,000 GPD – Average daily use 32,000 people served Domestic Water Upgrades Eliminate undersized mains Increase pressure in Eagle Heights Add isolation valves to high priority buildings Eliminate lines under buildings Replace obsolete piping materials Sanitary Sewer Overview System Type/Summary 102,760 ft (~19 miles) of pipe Pipe size is 4” to 24” 476 Manholes 63% pumped - 12 pump stations Wastewater flows to MMSD City of Madison Interceptors City of Madison Mains Age Distribution 7% 80 – 100+ years 50% 40 – 80 years 33% 20 – 40 years 10% 0 – 20 years Sanitary Sewer Manhole Installation Sanitary Sewer Upgrades Improve reliability Televise older sewers to quantify condition Repair/replace older manholes Improve pump stations for more efficient and reliable operation Storm Sewer Overview System serves: Building roof drains Area drains Catch basins System Type/Summary Storm sewer with manhole 122,640 ft (~23 miles) of and catch pipe ranging from 3” to 68” basins on each end 777 Manholes Outfall into Pipe types: Vitrified Clay, Lake Mendota Reinforced Concrete, Ductile Iron, or PVC Age Distribution 4% 80 – +100 years 41% 40 – 80 years 32% 20 – 40 years 23% 0 – 20 years Storm Sewer Overview 790 Acres drain To Lake Mendota to Lake Mendota To Lake Monona 230 Acres drain to Lake Monona Storm Sewer Upgrades Improve system reliability Upgrade undersized storm sewers - Chamberlin Hall Routine system maintenance - entire system Erosion and water quality control - entire system Storm Sewer Upgrades Techniques to improve quality of storm water Rain Gardens Cisterns Water Quality Ponds Swales Green Roofs Pervious pavements Treatment units Reuse rain water for irrigation, etc. Planning Principles Create high level of reliability and redundancy Implement planned phase out of old equipment Maximize energy efficiency and minimize energy cost Minimize maintenance requirements Maintain flexibility for future technologies Coordinate with building/transportation plan Investigate alternative energy resources Plan for future technologies Load Management (Existing Buildings) Upgrade Boiler Controls (2-3% efficiency increase) Ongoing multiple year building energy conservation program through the Wisconsin Energy Initiative (WEI) The energy conservation program has spent approximately $29,500,000 on building improvements Load Management – WEI Accomplishments Energy audits performed for 12,000,000 SF Retrofitted lighting with newer lower wattage efficient fixtures Replaced 1000 electric motors with premium efficiency motors Installed variable speed driven electric motors Installed 2000 ultra low water usage plumbing fixtures Replaced/repaired 2700 steam traps Upgraded controls (occupancy sensors, HVAC energy monitoring) Adding 8000 storm windows Load Management (New Buildings) Current State Building Requirements: Building Envelope thermal insulation requirements exceeds ASHRAE Energy Standard 90.1 Selection of Mechanical Systems based on Life Cycle Cost Analysis Mandatory use of heat recovery Daylighting investigation Investigation into Photo Voltaic (PV) use Load Management (New Buildings) Leadership in Energy and Environmental Design (LEED) Current State design specifications and criteria are equivalent to LEED Certification standards Emphasis of LEED Sustainable site development Energy efficiency and atmospheric impact Water conservation Materials selection Indoor air quality (IAQ) Utility Project Drivers Replace Obsolete Equipment due to: Age Condition Efficiency Capacity Needs Reduce energy consumption in buildings Add new capacity when required based on load growth and distribution system Utility Project Drivers Environmental Improvements Higher efficiency usually means lower emissions Evaluating fuel selection and changes in technology to reduce emissions Improved boiler technologies Improved controls Load Growth Projections (Heating) Adequate Plant Heating Capacity WCCF CAPACITY STEAM LOAD (LBS./HOUR) ESTIMATED HEATING LOAD GROWTH CHARTER STREET CAPACITY WALNUT STREET CAPACITY Phase Phase Phase 1 2 3 TIMELINE Load Growth Projections (Cooling) Adequate Plant Cooling Capacity ESTIMATED COOLING LOAD GROWTH COOLING LOAD (TONS) WCCF CAPACITY CHARTER STREET CAPACITY WALNUT STREET CAPACITY Phase Phase Phase 1 2 3 TIMELINE Load Growth Projections (Electrical) Potential Shortage of Electrical Capacity ESTIMATED ELECTRICAL LOAD GROWTH ELECTRICAL LOAD (kVA) INSTALLED SUBSTATION CAPACITY Phase Phase Phase 1 2 3 TIMELINE Thermal Utility Expansion Requirements Existing Heating & Cooling Plants Future Cooling Plant Section of campus that will require additional cooling plants WCCF Walnut Street Plant Charter Street Plant Thermal Utility Expansion Requirements Sample Campus Cooling Plants Electrical Utility Expansion Requirements Existing Electrical Substation Future or Expanded Electrical Substation Options for Exploring (Increase Efficiency) Investigate High Efficient Energy Generation Methods: Cogeneration with Combustion Turbines (similar to WCCF) Clean burning coal techniques (atmospheric fluidized bed combustor - AFBC) Options for Exploring (Increase Efficiency) Cleaner burning coal techniques New AFBC Heating Plant at UNC (atmospheric fluidized bed combustor -AFBC) Options for Exploring (Increase Efficiency) New AFBC Heating Plant at UNC Options for Exploring (Increase Efficiency) New AFBC Heating Plant at UNC Options for Exploring (Increase Efficiency) Thermal Energy Storage (chilled water) – reduces electrical use for chilled water generation during peak times Options for Exploring (Renewable Energy) Commitment to Increasing the use of Alternative/Renewable Energy Resources Increase co-firing of coal boilers with renewable biomass energy resources Waste wood products, corn stalks, energy crops (grasses, trees) Historically the waste source must be in <50 mile radius Photovoltaic cells (electricity from solar energy) Options for Exploring (Renewable Energy) Wind Power (purchase off site through utility provider) Fuel Cell Hydrogen (fuel cells) Geothermal Options for Exploring (Sustainable Design) Commitment to Sustainable Building Design Storm water reuse Reclaimed water Day lighting Heat Recovery (recovering heat from exhaust air streams) Chilled beams to reduce building airflows in research labs, fan energy, cooling load, etc. Questions?
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