california institute of technology...10mw solar mars gtg 2.5mw tuthill murray stg cells 1997...
TRANSCRIPT
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California Institute of Technology Matthew Berbée
Director Maintenance Management & Energy Service
March, 2014
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Energy history at caltech
Caltech Energy Conservation Investment Program (CECIP) Complexity and trends in the built environment
the discussion of energy CECIP process for project development retrofitting Laboratories Market transformation and the Project Handoff
2
for today…
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3
energy projects at Caltech are financed through capital
revolving fund, the Caltech Energy Conservation Investment Program (CECIP)
“The cost to the utility budget during a CECIP project
does not change (vs. budget). What does change is that a portion goes to utility bills, and a portion to debt
service”
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California Institute of Technology
4.4 Million SF of buildings 125 acres in urban setting $2.4B replacement value 120+ GWH electricity annually
− energy Intensity ~275 MBTU/SF − average UC Campus ~ 180 MBTU/SF − $15M+ annual utility bill
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utility budgeting
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Electricity Gas
Water
CECIP
AB32
utility budget mix
6
37%
59%
4%
2009: $19.7M 2014: $15.6M
34%
36%
6%
18%
6%
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FY13 total budgeted vs actual (kWh)
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0
2,000,000
4,000,000
6,000,000
8,000,000
10,000,000
12,000,000
14,000,000
kWh
Budgeted kWh
0
2,000,000
4,000,000
6,000,000
8,000,000
10,000,000
12,000,000
14,000,000
kWh
Actual kWh
0
2,000,000
4,000,000
6,000,000
8,000,000
10,000,000
12,000,000
14,000,000
kWh
Actual kWh
PWP
PPA
onsite cogeneration
CECIP
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energy history
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power production
Cogeneration is the production of power utilizing two different power cycles
WHAT WE HAVE TODAY • Currently the Central Utility Plant utilizes a 10MW gas turbine engine
• Waste heat from the turbine exhaust is used to generate high pressure steam
• The steam is used to turn a steam turbine that drives a 2.5MW generator
Gas Compressor Gas Turbine Engine Steam Turbine Generator 9
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caltech power generation timeline
1967 Central Plant Heating
& Cooling
2004 Nat’l Energy Star Award
from DOE and EPA
2003 New Cogen
10MW Solar Mars GTG 2.5MW Tuthill Murray STG
1997 Replaced 4.5MW
Turbine with 5MW Solar Centaur
1989 4.5 MW Dresser Clark Gas
Turbine & ABCO HRSG
1984 1MW Turbonics Back
Pressure Turbine
1982 Steam Evaluation
2008 200kW - Solar PV I
2010 1.3MW – Solar PV II
2011 2MW Bloom Energy Fuel
Cells
1967 2014
10 0
5
10
15
20
1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012
MW
On-Site Power Production (1984-Present)
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the built environment &
trends in system complexity
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complexity in the built environment
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Source: USGBC LA, 2014
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complexity in the built environment
Source: USGBC LA, 2014
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complexity in the built environment
Source: USGBC LA, 2014
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energy trends at caltech
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0
20,000
40,000
60,000
80,000
100,000
120,000
140,000
MW
h
fiscal year
1990-2013
historical power consumption at caltech
16
0
20,000
40,000
60,000
80,000
100,000
120,000
140,000
MW
h
fiscal year
1990-2013 CECIP Program Inception 2009
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paradoxical effect?
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Cahill Center for Astronomy and Astrophysics
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Walter and Leonore Annenberg Center for Information Science and Technology
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Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering
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Linde + Robinson Laboratory for Global Environmental Science
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Earle M. Jorgensen Laboratory
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discussion of energy usage trends
23
110,000
111,000
112,000
113,000
114,000
115,000
116,000
117,000
118,000
119,000
120,000
MW
H
FISCAL YEAR
100,000 sqft added 5 fume hoods added
64,000 sqft added 102 fume hoods added
47,000 sqft added
45,000 sqft renovated 13 fume hoods added
30,000 sqft renovated 24 fume hoods added
campus energy drivers since CECIP inception
211,000 sqft added 192,000 sqft renovated 144 fume hoods added
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the rest of the story
24
250000
300000
350000
400000
450000
500000
550000
600000
650000
700000
2009 2010 2011 2012 2013
MM
BTU
CHILLED WATER & STEAM (MMBTU)
CHW (MMBTU) Steam (MMBTU)
Poly. (CHW (MMBTU)) Poly. (Steam (MMBTU))260
265
270
275
280
285
290
295
300
305
310
2009 2010 2011 2012 2013
kBTU
/SQ
FT
campus energy density (kBTU/sqft)
10% reduction
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the result
25
110,000
115,000
120,000
125,000
130,000
135,000
140,000
MW
H
FISCAL YEAR
~18 GWH reduced by energy
efficiency
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how to make this happen
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• establish program criteria early
• communicate the go/no-go factors
• review ground-rules for evaluating retrofit opportunities in laboratory and other critical facilities
• delineate energy retrofit training requirements
• detail project closeout requirements beyond traditional punch/O&M/warranty
• outline requirements to “prove the efficiency benefit”
Projects Must: Exhibit verifiable savings
♦ Contain a plan for periodic
measurement & verification
♦ Return on Investment
greater than 15%
standard operating procedures
energy retrofit “play-book”
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prove the benefit
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why
leverage technology to improve operational efficiency
feedback loop based on building performance • maintain design performance
• anticipate potential trouble calls
• root cause accountability
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building energy use drift up ~ 3% per year.
California Energy Commission
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measure and prove the performance
• CECIP takes measurement and verification to another level
• in-house business processes to sustain savings
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how much energy should the building use?
Visualizations for efficiency
Y= mx + B
optimal operating line
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energy retrofits in lab space?
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why are the savings possible?
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constant air volume
variable air volume
supply and exhaust flow rates remain the same
• fume hood sash position • thermal demand • occupancy
dependent on: independent of:
supply and exhaust flow rates vary to match load
constant
ven
tila
tio
n r
ate
(C
FM)
variable
CAV CFM VAV CFM
savings
constant variable air volume
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0.00
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.80
0.90
1.00
0 200 400 600 800 1,000 1,200 1,400 1,600 1,800 2,000
PR
ESSU
RE
DR
OP
[IN
. W.C
.]
AIRFLOW [CFM]
Valve Selection
AccuValve AVC 3100 Single 10" Ø Low-Pressure Accel II Celeris Single 10" Ø Low-Pressure Accel II Celeris Dual 10" Ø
Medium-Pressure Accel II Celeris Single 10" Ø Medium-Pressure Accel II Celeris Dual 10" Ø
lowering system pressure drop
If you’re living up here then the point is
more for new construction than retrofit
Lower = less energy
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adding automation
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prove the benefit
average % reduction from baseline
fan (kW) 60%
CHW (BTU/hr) 17%
HHW (BTU/hr) 58%
cooling energy heating energy fan energy
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what matters most
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improve probability of lasting benefit
energy efficiency
improving operations
Focus on the main things
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the trophy
• long term benefit of deferred maintenance reduction
• improved capability to pursue LEED – EBOM
• competitive advantage, best in class research and facility & operations
• business processes and infrastructure for a proactive operations and maintenance
40
Spend $0.80/SQFT identify opportunities
Spend $XX/SQFT on implementation
Realize $3.50/SQFT/Yr avoided cost
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Project Transition To Operations
With added building complexity comes a new need
41
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Thomas Renovation
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what
Project Transition to Operations
New processes for maintainable asset information transfer from design to operation.
Improve: • focus and quality of O/M information
• use of technology to support process
• longevity and operational use of commissioning testing process
• customer satisfaction
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why
• We need this because there is DATA LOSS in the hand off
• Answer the question, how is my building performing?
• Answer the question what is the operational budget impact of the building and its systems?
• Improve: • Energy performance • Building system performance • Maintenance & Operations performance • Consistency of operations • Customer satisfaction
44
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statement of work
Cx Deliverables
• Key Performance Indicators – prove program value
•Maintainable Asset list • equipment inventory • warranty information & tracking • preventative maintenance tasks
• Updated energy model • Building user guide
• Technician training, building occupant training
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status of effort
•Contract in place with project Cx authority, Caltech Thomas Building renovation
• Caltech Design Guidelines language in review for handoff requirements & maintainable assets
• Technology integration in development
• Industry conversation gaining momentum
• Construction Owners Association of America
• California Commissioning Collaborative
• Tradeline
46
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proving value…
key performance indicators • avoided trouble calls due to improved training
• improved warranty management • reduced contractor call backs • increased O/M productivity
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simulate project hand-off of 100% CD documentation
• Focus on system integration opportunities
• Improve understanding of process touch-points,
(who uploads what, where. How are reviews managed etc.)
current action
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Integrate Cx Functional Performance Test into automated
diagnostic tool, new hand-off deliverable
• reduce future RCx costs
• move towards continuous commissioning strategy
future action
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questions?
50