Transcript Integrated Energy Master Plan Summary

Integrated Energy
Master Plan
Summary
June 21, 2012
Eric Utterson, PE, LEED AP
Jerry Williams, PE, LEED AP
8760 Engineering, LLC
St. Louis, MO
Overview
 Campus Master Plan (3/2010)
Improve campus grounds, facilities,
infrastructure and plan for growth
Work toward becoming a carbonneutral campus
 Integrated Energy Master Plan (2/2012)
Identify a transformative plan to
reduce energy and carbon
emissions while maintaining sound
economic justifications for these
actions
Findings
 FY 2010/2011
Energy Costs
Energy Source
Energy Cost
Electricity
$18,677,297
73.1%
Coal
$4,263,004
16,7%
Natural Gas
$2,542,489
9.9%
Fuel Oil
$75,282
0.3%
TOTAL
$25,558,072
100%
Findings
 Results of Energy Audit for 104
Major Campus Buildings
Energy Load
Cost
Building Lighting
23%
Building Equipment
17%
Building Fans
16%
Heating
17%
Cooling
18%
Heating Losses
7%
Building Losses
4%
Benchmarking of Buildings by Energy Use
Note: EUI Score >50% = High Energy Consumption
80%
CBECS Energy
Usage Index (EUI)
Score.
60%
40%
Science
Residential
CBECS Avg
Student Life
0%
Office
20%
Academic
CBECS Score
100%
Central Heating Plant
 Boilers in place to fire coal, natural gas
or fuel oil
 During FY 2010/11, plant fired 92% coal,
8% natural gas
 Coal boilers 42 to 53 years old
 Replacement of coal boilers not
economically viable
 EPA emissions regulations becoming
ever more stringent
 FY 2011/12, conversion to mostly
natural gas
Central Cooling Plant
 High efficiency electric chillers in
linked, distributed plants
 Plants currently operated very
efficiently
 Capacity increases necessary to meet
existing loads and to support the
master plan growth
 Aging building chillers around campus
must be planned for replacement
Utility Distribution
 Electric and chilled water distribution
systems in good condition
 Steam and condensate distribution
systems failing
4.2 miles of buried piping require
replacement
Distribution losses represent
$1.8M in annual energy
consumption
Conclusions and
Recommendations
1. Implement Energy Conservation Projects
 Make focused effort in mechanical
system tuning
 Continuing aggressive implemention
of energy conservation facility
improvements
 Install natural gas turbine cogeneration
plant with heat recovery boiler
Conclusions and
Recommendations
2. Repair Campus Utility Systems
 Replace critical segments of the
aging steam distribution piping
system
 Reduce steam distribution pressure
to 40 psig and set up building
steam trap reviews
 Continue to provide building energy
meters – benchmark use as a
diagnostic tool
Conclusions and
Recommendations
3. Prepare to Stop Burning Coal
 Dependence on coal firing will be
diminished within the next ten years
 Existing boilers > 40 years old
 New coal boilers are cost
prohibitive
Conclusions and
Recommendations
3. Prepare to Stop Burning Coal (Continued)
 Until coal is retired
 Retain all current available
fuels for operating cost
stability
 Analyze natural gas and coal
costs monthly to minimize
operating cost
 Heat with alternative
technologies
Conclusions and
Recommendations
3. Prepare to Stop Burning Coal (Continued)
 Move toward distributed hot
water heating plants
 Replace aging boiler # 5 with a
new high efficiency unit for
more robust natural gas fired
plant operations
Conclusions and
Recommendations
4. Design More Efficiently
 Continue to require LEED certification
for all new buildings with enhanced
annual energy tracking
 Supplement university design
standards with energy system
requirements for new buildings
 Continue to investigate renewable
energy sources as the technology
advances reduce costs
Conclusions and
Recommendations
5. Energy Conservation through
Involvement of Campus Community
 Encourage a culture of energy
conservation behavior at every level
of the campus community
 Continue to promote campus
programs that reinforce these
behaviors
Recommended Integrated Energy
Master Plan Initiatives
Annual Cost
Estimated
IEMP Initiative
Reduction*
Project Cost
1 Mechanical System Tuning $
910,000 $ 3,270,000
2
Energy Conservation
$ 5,740,000 $ 44,920,000
3
$
950,000 $ 10,600,000
4 Distributed Thermal Plant
$
480,000 $
5
$ 1,480,000 $ 18,480,000
6
Steam System Repairs
Cogeneration
Take Advantage of Low
Natural Gas Pricing
Total
$
$
170,000 $
5,310,000
-
9,730,000 $ 82,580,000
* Based upon FY 2011 Energy Costs and Construction Costs