A Decade of Moooov’n Utilities Forward at UVM

1. David C. Blatchly, EI Project Engineer The University of Vermont - UVM A Decade of Moooov’n Utilities Forward at UVM

2. Executive Summary Over the past decade the University of Vermont (UVM) has taken campus utility systems from the master planning stages to full implementation. A true Utilities Master Plan, the following slides will showcase the strategic projects dealing with underground steam line distribution renewal and expansion, the University’s central chilled water plant construction, tactical planning utilizing existing auxiliary boilers and chillers for system back up, system maintenance, optimization and control. The UVM Physical Plant Department has partnered with outside consultants, contractors and our own in-house institutional knowledge to create campus district energy systems that are not only coordinated with the University of Vermont’s overall Campus Master Plan, but are also capable of serving the University far into the future.

3. Overview • Background • Utility Mapping • Master Planning • Issues • Implementation • Infrastructure Renewal/Expansion Projects • Central Plant Projects • Costs • Results

4. Background • Central Heating & Cooling Plant (CHCP) • 5 Boilers – serving 3.7 Million sqft • Dual-fuel (#6 fuel oil and natural gas) • Maximum steam capacity is 224,500 lbs/hr • Steam is generated at 220 psi and 398 F • 2 Chillers (steam driven) – serving 1.2 Million sqft • Maximum cooling capacity is 2730 tons • Variable/Primary (maximum pressure -100 psi) and 42F • 8.8 miles of underground distribution piping • 40 Steam & chilled water manholes • 1.1 MWEmergency Generator • Satellite/Back-up - 12 Boilers • 12,836 Steam traps • 150,000 gallons of #6 oil are stored at the Plant. • 26 Chillers; 69 Boilers support facilities not served by the CHCP

5. Existing Utility MappingWhy is this important to UVM? • Ensure Reliability • Safety • Cost effectiveness • Growth • Dedicated utility corridors • Environmental impact • Maintainability • Serviceability

6. Master Planning Utilities5 year Steam & Chilled Water Master Plan

7. What Are Some Of Today’s Issues What is the planning and strategy supporting? • Growth on campus • Energy costs • Systems are outdated and obsolete • Air conditioning is an expectation • Utilities are critical for Research • System reliability • Emissions/Air Quality/Permitting

8. Implementation Projects • Underground Infrastructure Replacement (’03 – ‘08) • Chiller Plant (’06 – ‘07) • Given Boiler & HSRF Chiller Plant Loop (’08 – ‘10) • North Campus Upgrades (‘10 – ‘11)

9. GENERAL CONDITION OF 1980 VINTAGE PIPING • CONDUIT/CASING FAILURE • DEGRADING VAULTS

10. SIMPSON TO GUTTERSON - 2003 • Concrete Trench Box • Field Fabricated System

11. MAIN STREET TO UNIVERSITY HEIGHTS – 2004/2005 • Prefabricated System • Pre-Insulated System

12. DAVIS CENTER TO MAIN ST. - 2005 • Prefabricated System • Pre-Insulated System

13. CHP TO BAILEY/HOWE & MARSH LIFE – 2006/2007 • Prefabricated System • Pre-Insulated System

14. CENTRAL CHILLER PLANT– 2006/2007 • Facilities Served Initially (07) • Davis Center • Bailey/Howe • Old Mill/Lafayette • Royal Tyler Theatre • Underground Piping • 4100 FT of Chilled Water Supply & Return Piping • 1700 FT of High pressure Steam and Condensate Piping. • Plant Equipment • (2) 1365 Ton Steam Driven Turbine Chillers • (3) 200 HP CHW Pumps • (3) 200 HP Tower Pumps • (4) 40 HP Tower Fans

15. FIRST TWO OF THEIR KIND IN VERMONT STEAM DRIVEN TURBINE/CENTRIFUGAL CHILLER

16. CHW PLANT – FALL SHUTDOWN UNDERGROUND DISTRIBUTION TIE-IN

17. CHILLER DELIVERY VARIBLE SPEED; PRIMARY PUMPS

18. CHW PLANT – TOWER ENCLOSURE & SUMP

19. CHW PLANT – STEAM BLOW

20. TOWER ENCLOSURE AND SITE IMPROVEMENTS

21. CHW PLANT CONTROL STATION

22. GIVEN BOILER REHABILITATION – 2008 • Remote site/virtual 6th boiler • (2) steam boilers 40,000 lb/hr • Provide both load shed and redundancy for medical school

23. CHILLED WATER LOOP (HSRF): More efficient chilled water generation/distribution Reduction in HSRF Electric usage Existing Chillers will provide both load shed and redundancy for medical school JEFFORDS/HSRF LOOP– 2008/2009

24. NORTH CAMPUS STEAM & CHW DISTRIBUTION Phase I - 2010 • Prefabricated System • Pre-Insulated System

25. NORTH CAMPUS STEAM & CHW DISTRIBUTION Phase II - 2011 • Prefabricated System • Pre-Insulated System

26. Plant Equipment & Infrastructure Project Costs: 2003-2010 • Simpson to Gutterson (Phase III) $ 1,800,000.00 • MH N1 (103) to Harris w/ feeds to U-Heights $ 3,100,000.00 • MH N6 to MH N3 (thru Davis Center Site) $ 3,200,000.00 • MH N3 to MH N1 $ 1,587,900.00 • Austin to Millis $ 325,000.00 • Chiller Plant & Infrastructure: to BH, RTT & Old Mill/Lafayette $ 11,850,000.00 • Chilled Water Infrastructure: Davis Site & Connection to Davis: $ 1,750,000.00 • Votey to Perkins $ 400,000.00 • Jeffords Steam & CHW; Loop to HSRF $ 3,800,000.00 • N. Campus Steam and Chilled (Phase I) $ 2,200,000.00 • Given Boiler $ 1,650,000.00 • PFG Boiler $ 698,000.00 • Total $ 32M

27. Results Since 2003…. • Over 500,000 sqft of new space the central plant’s peak output has decreased more than 10% (20,000 PPH). • Over $32 million invested in the CHP Equipment and Campus Infrastructure • 5.3 Miles of Underground Infrastructure installed (Replaced & New) • 5 electrical chiller retired; 2 Steam Absorption Chillers retired (MLS) • Installed Chillers producing water at 8.5 PPT vs. HSRF @ 20 PPT • Maintained Boilers at 83% combustion efficiency; 90% of condensate recovery • Rehabilitated Boiler Capacity of 40,000 PPH @ Medplex • 2000 Tons of coolingreserve at Medplex

28. Contact Information David C. Blatchly, EI Project Engineer The University of Vermont 284 East Avenue Burlington, Vermont 05405 802-656-2189 David.Blatchly@uvm.edu www.uvm.edu/~uvmppd/