Dan Doyle, P.E., LEED AP Grumman/Butkus Associates Energy

Dan Doyle, P.E., LEED AP
Grumman/Butkus Associates
Energy Efficiency Consultants &
Sustainable Design Engineers
Gain an understanding of what energy
benchmarking is and why it should be an
integral part of every hospital’s energy
management program.
  Gain an understanding of what
benchmarking tools are available for
hospitals.
  Gain an understanding of potential energy
conservation opportunities available.
 
Is 10 MPG high or low for an
automobile?
Is 350 kBtu/SF/YR high or low
for a hospital?
Answer: Common
Knowledge
Answer: ???
Only a screening tool
  Doesn’t explain why a building performs a
certain way or how to change its
performance (we’ll get to that later)
 
Use benchmarking results to initiate action
plans
  Benchmarking only begins the improvement
process
  If nothing else changes, don’t expect your
future performance to improve
 
 
 
 
Focus on a limited number of performance parameters
◦  If the report contains 100 pages filled with 100s of
numbers, people may ignore the results or won’t be
able to figure out what to do with them
The data should be recent, relevant.
◦  Similar facility types (hospitals)
◦  Same usage periods (CY or FY)
◦  Same geographic region
◦  Same electric utilities/rates, when possible
Variations of results due to equipment types or system
designs can provide insight on designs that are
working/not working
 
What’s available for hospitals?
◦  EPA Energy Star Program
◦  G/BA’s Energy & Water Benchmarking Survey
◦  ASHRAE BEQ – limited adoption, has future potential
for operational and as-built ratings
◦  Green Globes CIEB for Healthcare
◦  CBECS
◦  DOE Benchmark Buildings
◦  Municipal reporting (NYC)
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A rating scale of 0-100
  A rating of 50 indicates average performance
  A rating of 75 or above indicates top
performance
 
◦  Eligible for an Energy Star Label
 
Most well-known, widely accepted
benchmarking and rating system
 
Hospitals are not compared to others entered
into Portfolio Manager to determine score
◦  Until recently, used database from a 1996 EPRI
Study
◦  New database from EPA/ASHE incorporated in fall,
2011
 
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 
 
 
191 Hospitals
Average hospital size: 448,061 sq ft
Average source energy intensity: 485 kBTU/sq ft
Equivalent site energy intensity: 252 kBTU/sq ft
The switch to new database caused changes to most
scores
 
 
 
 
Started in 1994
Most data is from similar, midwestern facilities
All data from the same time period (CY)
Number and location of participants:
Data Year
IL
IN
MI
WI
OH
IA
MN
Other
Total Hospitals
2000
57
16
3
24
0
4
7
2
113
2001
30
5
5
20
0
6
3
0
69
2002
25
5
7
20
1
2
8
1
69
2003
40
7
4
24
1
4
9
1
90
2004
38
10
4
29
1
4
9
3
98
2005
49
10
6
29
1
7
12
3
117
2006
38
14
6
22
1
5
4
1
91
2007
40
6
2
23
0
2
5
2
80
2008
48
3
6
20
0
1
4
2
84
2009
45
3
7
29
0
2
3
2
91
2010
46
4
7
37
0
3
7
5
109
2011
63
6
7
41
0
2
7
3
129
 
2012 Survey vs. Energy Star
# of Hospitals
Locations
Average Size (sq ft)
G/BA Survey
Energy Star
129
191
Regional
(80% in IL and WI)
648,508 (mean)
545,693 (median)
National
448,061
Average Source EUI (kBTU/sq ft)
483
485
Average Site EUI (kBTU/sq ft)
245
252
Average Energy Cost ($/sq ft)
$3.28
N/A
45
N/A
60
(state average)
N/A
Average Water Usage
(gal/sq ft)
Average Carbon Footprint
(lbs CO2/sq ft)
STATISTICS
Sample Mean
GAS/STEAM
Btu/ft2
$/ft2
ELECTRIC
Btu/ft2
$/ft2
TOTAL*
Btu/ft2
$/ft2
Overall (129)
147,366
$1.01
98,633
$2.27
245,999
$3.28
Illinois (63)
151,966
$1.00
105,944
$2.43
257,911
$3.43
Wisconsin (41)
147,346
$1.03
87,598
$2.05
234,943
$3.08
Michigan (6)
149,150
$1.07
114,949
$2.35
264,099
$3.42
Indiana (7)
136,462
$1.21
81,679
$1.78
218,141
$2.99
70,607
$0.49
67,096
$1.44
137,703
$1.93
Minnesota (7)
*Purchased chilled water is included in the total but not in gas or electric categories.
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Copyright 2012 Grumman/Butkus Associates
Copyright 2012 Grumman/Butkus Associates
Copyright 2012 Grumman/Butkus Associates
There is no cost to participants, just send in
your data.
  If you would like to participate in the 2013
survey (for CY2012), call or email Dan at:
 
ddoyle@grummanbutkus.com
847-316-9219
 
Retro-Commissioning (RCx)
◦  Verified results for 17 hospitals, completed in the
last 3 years
 
Implement Higher Cost Energy Conservation
Measures (ECMs)
◦  Results of Energy Studies for 17 hospitals
completed during the past 12 months
Supply Air Temperature Reset
  Static Pressure Reset
  Economizer
  Scheduling
  Simultaneous Heating/Cooling
  CHW or CW Control
  Pumping
  Balancing
  VAV Box Optimization
 
Copyright 2012 Grumman/Butkus Associates
Copyright 2012 Grumman/Butkus Associates
Copyright 2012 Grumman/Butkus Associates
Copyright 2012 Grumman/Butkus Associates
Copyright 2012 Grumman/Butkus Associates
The local utility paid 100% of RCx
consultants fee
  The hospital’s paid all implementation costs
  Summary of Results
 
◦  Average annual savings: $154,925
◦  Average payback: 5 months
 
Results of energy studies completed in 17
Chicago-area hospitals during the past 12
months
◦  Average size: 721,979 sq ft
Distribution of Total Electricity Savings
Copyright 2012 Grumman/Butkus Associates
Distribution of Total Natural Gas Savings
Copyright 2012 Grumman/Butkus Associates
Potential Electricity Savings by Measure
Copyright 2012 Grumman/Butkus Associates
Potential Natural Gas Savings by Measure
Copyright 2012 Grumman/Butkus Associates
Copyright 2012 Grumman/Butkus Associates
Copyright 2012 Grumman/Butkus Associates
Copyright 2012 Grumman/Butkus Associates
Copyright 2012 Grumman/Butkus Associates
Project Cost to Achieve 5% Energy Usage Reduction
(Actual Reduction % and Years to Payback)
Copyright 2012 Grumman/Butkus Associates
Copyright 2012 Grumman/Butkus Associates
Copyright 2012 Grumman/Butkus Associates
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Copyright 2012 Grumman/Butkus Associates
 
Thank you…
Daniel Doyle, President
Grumman/Butkus Associates
847-316-9219
ddoyle@grummanbutkus.com