Transcript Presentation International District Energy Association June 2011 (Dave Blatchly)

A Decade of Moooov’n 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 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.
Overview





Background
Utility Mapping
Master Planning
Issues
Implementation
 Infrastructure Renewal/Expansion Projects
 Central Plant Projects
 Costs
 Results
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
Master Planning Utilities
5 year Steam & Chilled Water Master Plan
4/7/04
6
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Systems are outdated and obsolete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
Implementation Projects
I.
II.
III.
IV.
Underground Infrastructure Replacement (’03 – ‘08)
Chiller Plant (’06 – ‘07)
Given Boiler & HSRF Chiller Plant Loop (’08 – ‘10)
North Campus Upgrades (‘10 – ‘11)
GENERAL CONDITION OF 1980 VINTAGE PIPING
• CONDUIT/CASING FAILURE
• DEGRADING VAULTS
SIMPSON TO GUTTERSON - 2003
• Concrete Trench Box
• Field Fabricated System
MAIN STREET TO UNIVERSITY HEIGHTS – 2004/2005
• Prefabricated System
• Pre-Insulated System
DAVIS CENTER TO MAIN ST. - 2005
• Prefabricated System
• Pre-Insulated System
CHP TO BAILEY/HOWE & MARSH LIFE
• Prefabricated System
• Pre-Insulated System
– 2006/2007
CENTRAL CHILLER PLANT– 2006/2007
•
Facilities Served Initially (07)
–
–
–
–
•
Underground Piping
–
–
•
Davis Center
Bailey/Howe
Old Mill/Lafayette
Royal Tyler Theatre
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
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 –
• Remote site/virtual 6th boiler
• (2) steam boilers 40,000 lb/hr
• Provide both load shed and redundancy for
medical school
2008
JEFFORDS/HSRF LOOP – 2008/2009
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
NORTH CAMPUS STEAM & CHW DISTRIBUTION
Phase I - 2010
• Prefabricated System
• Pre-Insulated System
NORTH CAMPUS STEAM & CHW DISTRIBUTION
Phase II - 2011
• Prefabricated System
• Pre-Insulated System
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
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 cooling reserve at Medplex
Contact Information
David C. Blatchly, EI
Project Engineer
The University of Vermont
284 East Avenue
Burlington, Vermont 05405
802-656-2189
[email protected]
www.uvm.edu/~uvmppd/