ball state university sustainability and ground source
TRANSCRIPT
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“Sustainability and Ground Source Heat Pump Geothermal
Conversion”
Geothermal Conference April 10, 2014
[email protected] 765.285.2805
Ball State University
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Ball State University Sustainability Initiatives
Storm Water Management • Controlling run-off during construction • Permeable concrete • Sediment basins • Green roof • Street sweeping: 350 tons • Vortex/Storm Structures
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Ball State University Sustainability Initiatives
Landscape • Bio swells • Vegetative creek banks • Forestation: 8,000 trees • Green spaces • Low maintenance grasses
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Ball State University Sustainability Initiatives
Transportation • Hybrid electric vehicles: 41 • Flex-fuel vehicles E85 • Shuttle bus operation • B20 biodiesel fuel • Pedestrian friendly campus • Bike parking stalls • Encourage use of webinars and conference calls • Electric vehicle plug in stations
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Ball State University Sustainability Initiatives
Demand side reduction -T-8, T-5 and LEDS -Natural Lighting -Motion detectors/Occupancy sensors -Heat recovery Units -High efficient motors -Direct digital controls -Variable speed drives -CO2 monitors for outside air intake -Valence Units
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Ball State University Sustainability Initiatives
Building Construction: Leadership in Energy and Environmental Design (LEED) Silver certified: Letterman, Park ,DeHority Hall, Student Wellness, Kinghorn Hall
Gold certified: DESN, Studebaker East Employee/Student Awareness: -BEAT, other student organizations -STARS 2012 “GOLD” -COTE, Faculty/Students/Community -Global Reporting Initiative www.bsu.edu/sustainability Campus Master Plan Underway: Sustainability Bike Paths Design Standards
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Heat and Chilled Water Plant Operations Heat Plant: 4 Coal Fired Boilers 3 Natural Gas Fired Boilers 320,000 Lbs/Hr nameplate 240,000 Lbs/Hr current 700,000,000 Lbs/Year Chilled Water Plant: 5 Electrical Centrifugal Chillers 9,300 ton capacity 25,000,000 Ton Hours/Year
20-25% heat loss
Rejected heat
Heat (Steam) Plant
Chilled Water Plant
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Chilled Water Plant Renovation
District Energy Station South
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Ball State University (4) Coal Fired Boilers Installed 1941/1955
(3) Natural Gas Fired Boilers Installed in the 1970s
Shut off: March 21, 2014 No longer burning coal!
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Pollutants/Waste Produced from Burning 36,000 tons of Coal
• Carbon Dioxide 85,000 tons (Global Warming) • Sulfur Dioxide 1,400 tons (Acid Rain) • Nitrogen Oxide 240 tons (Smog) • Particulate Matter 200 tons (Breathing) • Carbon Monoxide 80 tons (Headache) • Multiple Hazardous Air Pollutants now regulated by
EPA’s Boiler MACT rules: Mercury • 3,600 tons of coal ash
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Ball State’s Path to Geothermal Replace Coal-Fired Steam Boilers
Contributing Factors Condition: Age 65+ years Capacity: Campus growth Output degraded EPA permit limits EPA : Boiler MACT
Funding State of Indiana: $44.8 M in 2005 (CFB) $33.1M in 2013 USDOE: $5M grant in 2009
*Burn Alternative Fuels: 70/30 *15% more efficient
(CFB)
Cost escalated to $65-$70M by 2008
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Concerns about aquifer
Extensive land requirement
Requires least amount of space
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Geothermal Process
Borehole Loops Thermal Energy Flow
All horizontal headers at least 5 feet deep
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Borehole Design •15 feet apart •225 SF per borehole •400/500 feet deep •Double and Single Loop •1-1/4 inch diameter pipe •High Density Polyethylene
3,600 boreholes (1,000 miles of pipe)
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Senator Richard Lugar Geothermal Groundbreaking Ceremony, May 9, 2009
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Borehole Drilling
Drilling Rigs Drilling Process
Allowed mud rotary only One borehole/per day/per rig
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Borehole Drilling
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Borehole Construction
Installation of Pipe Installation of Grout
Allowed different grout mixes Both manual and hydraulic has been used
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District Energy Station North
(4) Heat Pump Chillers: R134A Refrigerant Heating: 150 degree F hot water 38,000,000 BTU/Hour Cooling: 42 degree F chilled water 2,500 tons
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Hot Water Chilled Water
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Ball State’s Ground Source Heat Pump Geothermal System
Chilled Water Hot Water (10 miles)
Borehole Field (1,000 miles)
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Typical Hot Water Interface
Steam Heat Exchanger
Air Handler
Air Handler
Air Handler
Pre-heat GSHP Hot Water
Domestic water & snow melt systems
Hot Water Return
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Phase 1
Phase 2 --------------------------------------------------------------------------------------------
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Ball State’s Geothermal System Benefits
Reduction in Emissions • Carbon Dioxide 75,000 tons • Sulfur Dioxide 1,400 tons • Nitrogen Oxide 240 tons • Particulate Matter 200 tons • Carbon Monoxide 80 tons • Coal ash 3,600 tons “Ball State will be able to comply with EPA: Boiler MACT requirements” Other Benefits BTUs per year reduction: 500,000,000,000 BTUs/SF/Year: 185,000 reduced to 110,000 Water reduction: 45,000,000 gallons Dollars Saved: $2,000,000 Jobs created: 2,300 “Nearly all equipment and material used is American made”
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Ball State University’s Geothermal Project Visits and Inquiries
Colleges & Universities • Dartmouth College • Stanford University • University of Notre Dame • Ohio State University • University of Iowa • Northern Kentucky University • Colorado College • Slippery Rock University • Hampton University • Pratt Institute • Oakland University • Purdue University • Miami University, Ohio • Cornell University • Toledo University • Bowling Green State/Bowling Green • Wright State/Dayton
• University of Michigan • The Evergreen State College • Northwestern University • University of Illinois • Ohio University • Lake Land College • Indiana University-Purdue University
Indianapolis • DePauw University • University of Washington • Montana State University-Bozeman • Penn State University • University of Kentucky • Indiana State University • Northampton Community College • Colorado State University
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Ball State University’s Geothermal Project Visits and Inquiries
Other Organizations • U.S. Department of Energy • Indiana Department of Natural
Resources • Indiana Office of Energy Development • Representatives of Isparta, Turkey • National Wildlife Federation • Union of Concerned Scientists • Building Indiana Magazine • WFYI Indiana Expeditions • The Chronicle for Higher Education • Delta Sky Magazine • Second Nature (2010 Climate Leadership Award)
• Geo Outlook Magazine • Allison Transmission • Waterwell Journal • International District Energy Association • Biz World • The Christian Science Monitor • National Public Radio • Argonne National Laboratory • National Ground Water Association • Hoosier Environmental Council (2010 Technology Innovator of the Year Award) • Waste Management • General Service Administration • Korea: Engineering Firm
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Educational/Collaboration Opportunities
• Classroom: Natural Resources, Geology, Architecture, Construction Management
• Research: Geology Department
• Special Projects: Graduate Students
• Tours: Universities/k-12/Design Firms
• Conferences: Geothermal Conference: November 7, 2013 April 10, 2014 www.bsu.edu
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WWW.BSU.EDU/WEB/NEWS/GEOTHERMALVIDEO/
“Created by University Communications”