A Decade of Moooovn Utilities Forward at UVM David C. Blatchly, EI Project Engineer The University of Vermont - UVM

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 Universitys 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 Vermonts overall Campus Master Plan, but are also capable of serving the University far into the future.

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

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 MW Emergency 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

Existing Utility Mapping Why is this important to UVM? Ensure Reliability Safety Cost effectiveness Growth Dedicated utility corridors Environmental impact Maintainability Serviceability

4/7/046 Master Planning Utilities 5 year Steam & Chilled Water Master Plan

What Are Some Of Todays 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 Growth on campus Energy costs Systems are outdated and obsolete Air conditioning is an expectation Utilities are critical for Research System reliability Emissions/Air Quality/Permitting

Implementation Projects I.Underground Infrastructure Replacement (03 – 08) II.Chiller Plant (06 – 07) III.Given Boiler & HSRF Chiller Plant Loop (08 – 10) IV.North Campus Upgrades (10 – 11)

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

Concrete Trench Box Field Fabricated System SIMPSON TO GUTTERSON

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

DAVIS CENTER TO MAIN ST Prefabricated System Pre-Insulated System

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

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

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

CHW PLANT – FALL SHUTDOWN UNDERGROUND DISTRIBUTION TIE-IN

CHILLER DELIVERY VARIBLE SPEED; PRIMARY PUMPS

CHW PLANT – TOWER ENCLOSURE & SUMP

CHW PLANT – STEAM BLOW

TOWER ENCLOSURE AND SITE IMPROVEMENTS

CHW PLANT CONTROL STATION

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

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

NORTH CAMPUS STEAM & CHW DISTRIBUTION Phase I Prefabricated System Pre-Insulated System

NORTH CAMPUS STEAM & CHW DISTRIBUTION Phase II Prefabricated System Pre-Insulated System

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

Since 2003…. Over 500,000 sqft of new space the central plants 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. 20 PPT Maintained Boilers at 83% combustion efficiency; 90% of condensate recovery Rehabilitated Boiler Capacity of 40,000 Medplex 2000 Tons of cooling reserve at Medplex Results

Contact Information David C. Blatchly, EI Project Engineer The University of Vermont 284 East Avenue Burlington, Vermont