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By
PHS Utilities and Engineering department
11/15/2012 1
Agenda
PHS Strategic Energy Master Plan Objective
Massachusetts General Hospital Where is the Hospital today on SEMP Initiative
Utilities Savings
Renewable Energy
Combined Heat and Power CHP
10 year Capital outlay plan
SEMP impact on Utilities Cost and Consumption per SQ.FT. ECMs that have a major savings on Yawkey-Outpatient, Simches-Research
and Cox-Outpatient/Research/Office Facility
Lesson Learned
11/15/2012 2
PHS Strategic Energy
Master Plan Objective
In 2008, PHS Utilities and Engineering Department was
charged to develop a Strategic Energy Master Plan to
Address the Hospital ever-growing demand for energy
and the volatile nature of the Energy market and concerns
regarding global warming and long term sustainability of
resource consumption and its impact on the delivery of
critical Health care services
11/15/2012 3
PHS Strategic Energy Master Plan
Goals
25% or Greater Energy
Consumption Reduction-
2008 base line
Increase renewable/ sustainable
energy sources
Increase Use of Combined Heat and
Power
Develop 10-year capital outlay plan
4 11/15/2012
Hospitals
Massachusetts General Hospital
Brigham & Women's Hospital
North Shore Medical Center
Newton Wellesley Hospital
Faulkner Hospital
McLean Hospital
Shaughnessy - Kaplan Rehab
Rehab Hosp of Cape/Islands
Nantucket Hospital
11/15/2012 5
Massachusetts General Hospital
Where is the Hospital today on SEMP Initiative
25% or Greater Energy Consumption Reduction-2008 base line
Savings Energy Cost
Projected Actual Projected Actual
SEMP 2008 SEMP 2008
2009 Reduction 7% $7.00M
2010 Reduction 2% $0.48M
2011 Reduction 10% $1.47M
2012 Reduction 9% $1.12M
2013 Projected 4% $1.0M
2014 Projected 3% $0.8M
2015 Projected 2% $0.6M
Total 25% 37% $6.21M $12.47M
Since 2009 more than 100 projects related to SEMP were implemented
Equivalent to $312M of revenue @4% margin
Increase renewable/ sustainable energy sources
the RFP for Solar Photovoltaic was issued on
June 2012 as part of PHS system wide . Bids
were received and under PHS internal review
Increase Use of Combined Heat and Power
Propose Nashua street Cogeneration facility – Projected operation, May2018
The project is under study and has a potential savings of $10M annually
Equivalent to $ 250M of revenue @4% margin
Develop 10 Year Capital Outlay Plan
Total of $109.6M(based on 2.5% escalation)
2008 2009 2010 2011 2012 2013 2014 2015 2016 2017
0.3 M 1M 0.8M 3.8M 3.9M 4.2M 7M 30M 30M 29M
6 11/15/2012
$0
$10,000,000
$20,000,000
$30,000,000
$40,000,000
$50,000,000
$60,000,000
$70,000,000
$80,000,000
$90,000,000
200
8
200
9
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
Total Annual Capital Investment
Total Projected Energy Cost Based on 2008 SEMP Study (Do nothing) see note Total Projected Energy Cost Based on 2008 SEMP study, ECMs only see note Total Projected Energy Cost Based on 2008 SEMP study, ECMs and Co-Gen see note Total Actual Energy Cost After SEMP up to 2012 including Lunder building Total Projected Energy Cost After 2012 Including ECMs and Cogen, projected 4% energy cost escalation Total Projected Energy Cost (Do nothing) Adjusted for Actual Unit Rate including Linder building to 2012 Total Projected Energy Cost (Do nothing) projected from 2012, 4% projected energy cost escalation
-2008 SEMP Based on escallation of energy cost 4%
and load growth, of 1.5%
-Lunder Inpatient building was added in May of
MGH Capital Investment and Energy Cost Projections
11/15/2012 7
0
500,000
1,000,000
1,500,000
2,000,000
2,500,000 2
00
8
20
09
20
10
20
11
20
12
20
13
20
14
20
15
20
16
20
17
20
18
20
19
20
20
20
21
20
22
20
23
20
24
20
25
20
26
MGH Actual Energy Consumption VS Projection
From PHS Strategic Energy Master Plan Study
Total Energy Consumption (Do nothing) MMBTU based on SEMP 2008 study, including Lunder building
Actual Total Energy Consumption MMBTU After SEMP up to 2012 including Lunder building from invoices
Projected Actual Total Energy ConsumptionMMBTU with MGH SEMP Projected savings from 2012 to 2026
Total Projected Energy Consumption MMBTU with Projected savings from SEMP including Lunder building
Notes:
1.Lunder Building came on line on May 2011 but not fully occupied
until late fall
2.Based on escalation of 1.5% load growth
11/15/2012 8
9
0
50,000
100,000
150,000
200,000
250,000
300,000
350,000
400,000
450,000
500,000
2008
2009
2010
2011
2012
2013
2014
2015
MGH SEMP Actual Total Energy Reduction Compared to 2008 PHS SEMP Energy Reduction Goal
MGH SEMP Primary Goal, 25% energy reduction from 2008 based line 1,509,875MMbtu
MGH actual energy reduction compare to Primary goal
MM
BTU
11/15/2012
SEMP impact on Utilities Cost per SQ.FT.
$0
$2
$4
$6
$8
$10
$12
$14
MGH Combined including CNY,
Simches
MGH Main Campus
CNY 149, 114, 75 Simches Yawkey Cox
$ / s
q f
t
MGH Cost per Sq. Ft. FY 2008 ($/sq ft)
FY 2012 ($/sq ft)
$6.56
$4.97
$6.08
$4.43
$9.02
$6.83
$12.36
$7.67
$5.38
$11.04
$3.90
$6.90
(6,371,307 ft²) (5,071,825 ft²) (945,947 ft²)
(353,535 ft²) (446,960 ft²) (119,808 ft²)
11/15/2012 10
SEMP impact on Utilities Consumption
per SQ.FT.
0
100
200
300
400
500
600
MGH Combined including CNY,
Simches
MGH Main Campus CNY 149, 114, 75 Simches Yawkey Cox
kB
tu/s
q. ft
.
MGH kBtu per Sq. Ft.
FY 2008 (kBtu/sq ft)
FY 2012 (kBtu/sq ft)
LABS 21
Benchmark DOE 2.1
Hospital
Benchmark
262
217
251
201
376
294
487
252
210
383
142
217
(6,371,307 ft²)
(5,071,825 ft²) (945,947 ft²) (353,535 ft²) (446,960 ft²) (119,808 ft²)
11/15/2012 11
ECMs that have major savings on Outpatient,
Research and Outpatient/Research/Office Facility
Building Occ/Unocc schedule setback
Reduce minimum CFM set point
Schedule Room Thermostat with Dead Band
Fume Hoods modification
Lighting retrofits
Chillers Plant optimization
Steam Traps
Steam Condensate Heat recovery
Low temperature Run-Around Heat Recovery
Reset Pump DP set point (in Progress)
Reset AHU Supply and Return Fans S.P set point (in Progress)
11/15/2012 12
Fume Hoods modification
Before Modification Final Modification
11/15/2012 13
Simches Building
Occ/UnOcc Schedule Set Back
0
20
40
60
80
100
120
140
160
10/1/2012 10/2/2012 10/3/2012 10/4/2012 10/5/2012 10/6/2012 10/7/2012 10/8/2012
kW
Simches AHU-1,2
AHU-1
AHU-2
11/15/2012 14
Simches
0
5,000
10,000
15,000
20,000
25,000
30,000
35,000
Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep
MM
BT
U
Simches Utility Consumption, MMBTU
FY 08
FY 12
FY 2008: 487 kBtu/sq ft
FY 2012: 252 kBtu/sq ft
11/15/2012 15
Simches Building
0
500,000
1,000,000
1,500,000
2,000,000
2,500,000
3,000,000
Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep
kW
h
Simches Electric Consumption
FY 08
FY 12
11/15/2012 16
Simches
0
5,000
10,000
15,000
20,000
25,000
Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep
MM
BT
U
Simches Thermal Consumption
FY 08
FY 12
11/15/2012 17
Yawkey Building
Occ/UnOcc Schedule Set Back
0
20
40
60
80
100
120
140
160
9/10/2012 9/11/2012 9/12/2012 9/13/2012 9/14/2012 9/15/2012 9/16/2012 9/17/2012
kW
Yawkey AHU-1,2,3,4 AHU-1 FanTotalKw
AHU-2 FanTotalKw
AHU-3 FanTotalKw
AHU-4 FanTotalKw
11/15/2012 18
Yawkey Building
0
2,000
4,000
6,000
8,000
10,000
12,000
Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep
MM
BT
U
Yawkey Utility Consumption, MMBTU
FY 08
FY 12
FY 2008: 217 kBtu/sq ft
FY 2012: 142 kBtu/sq ft
11/15/2012 19
Yawkey Building
0
200,000
400,000
600,000
800,000
1,000,000
1,200,000
1,400,000
1,600,000
1,800,000
2,000,000
Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep
kW
h
Yawkey Electric Consumption
FY 08
FY 12
11/15/2012 20
Yawkey Building
0
1,000
2,000
3,000
4,000
5,000
6,000
7,000
Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep
Mlb
Yawkey Steam Consumption
FY 08
FY 12
11/15/2012 21
Cox Building
Occ/UnOcc Schedule Set Back
0
10
20
30
40
50
60
70
9/10/2012 9/11/2012 9/12/2012 9/13/2012 9/14/2012 9/15/2012 9/16/2012 9/17/2012
kW
Cox AHU-A,B,C
AHU-A Fan kW
AHU-B Fan kW
AHU-C Fan kW
11/15/2012 22
Cox Building
0
1,000
2,000
3,000
4,000
5,000
6,000
Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep
MM
BT
U
Cox Utility Consumption, MMBTU
FY 08
FY 12
FY 2008: 383 kBtu/sq ft
FY 2012: 209 kBtu/sq ft
11/15/2012 23
Cox Building
0
100,000
200,000
300,000
400,000
500,000
600,000
700,000
Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep
kW
h
Cox Electric Consumption
FY 08
FY 12
11/15/2012 24
Cox Building
0
500
1,000
1,500
2,000
2,500
3,000
3,500
4,000
Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep
Mlb
Cox Steam Consumption
FY 08
FY 12
11/15/2012 25
Lesson Learned
The Energy conservation measures such as Set point or
Schedule setback can be unintentional altered by mechanic
The Energy Alarms system need to be developed to monitor the
MEP system for equipment failures and/or operating out of
range
Energy Alarms can be part of MEP Maintenance Program
The “Continue savings measurement, Verification & maintenances program” need to be established to ensure the savings are continue
11/15/2012 26
• VAV Airflow
• VAV Heating Coil
• VAV Occupancy Hours
• HW HX Valve Leaking
• AHU Preheat Valve Leaking
• AHU CHW Valve Leaking • AHU Simultaneous Heating & Cooling • CHW Low Delta T
• CHW Economizer w/ Chiller(s) Running
• AHU Should be in Economizer; Excessive CHW Use
• AHU Should Not be in Economizer; Excessive Outside Air
• More than 79 difference types of Energy Alarm are monitors
11/15/2012 27
Energy Alarms Alarm Window
11/15/2012 28
•Checks box’s damper operation
–Very effective in locating broken damper actuators
•Trigger: Box air flow is not meeting setpoint
•Logic:
|CFM – CFMSpt| > 0.15 x MaxCFMSpt
[Delay = 1 hr]
• CFM = Actual CFM
• CFMSpt = CFM Setpoint
• MaxCFMSpt = Maximum CFM Setpoint of box
11/15/2012 29
Schedule:
5:00AM – 6:30PM Mon-Fri
Occ hrs/wk = 67.5 hr
Unocc hrs/wk = 100.5 hr
Occupied: (Extra CFM) x (hrs of CFM per week / Total hrs in a week) x ($6/cfm)
(711 cfm – 145 cfm) x (67.5 hr/168 hr) x $4/cfm yr = $ 909 /yr
Unoccupied:
711 cfm x (100.5 hr/168 hr) x $4/cfm yr = $ 1,701 /yr
Total Estimated Annual Savings= $ 2,610
11/15/2012 30
•Checks that the box’s heating valve is closing completely
•Trigger: An unexpected temperature difference across the heating coil
•Logic:
HWV% < 1% & |SAT – DAT| > 10 & CFMSpt > 0
[Delay = 2 hr]
• HWV% = Hot Water Valve Position [0%=Closed, 100%=Open]
• SAT = Supply Air Temp [Supply Air from AHU to the Box]
• DAT = Discharge Air Temp
• CFMSpt = CFM Setpoint
11/15/2012 31
Schedule:
5:00AM-6:30PM Mon-Fri
Occ hrs / yr = 3534 hr
Air Side
(325 cfm – 216 cfm) x (3,534 hr / 8,760 hr) = 44 cfm/yr
44 cfm/yr x $4 /cfm = $264/yr
Total Estimated Annual Savings = $176
11/15/2012 32
•Checks if box switches to unoccupied mode
•Trigger: Box remaining in occupied mode for a long period of time
•Logic:
Occ > 20 hrs in a 24 hr Period
[Delay = 15 min]
• Occ = Number of hours since midnight that the box has been occupied
11/15/2012 33
Yawkey Flr 9 Found Overridden ON Cancer Center Psychiatric Oncology Area
Normal Occupancy Schedule:
5:00AM-6:30PM Mon-Fri
Unoccupied hrs/week: 100.5 hr/wk
Total Minimum CFM: 8,063 CFM
Assuming $ 4/CFM yr
8,063 cfm x (100.5hr/168hr) x $4 /cfm yr
Annual Savings: $ 19,294
11/15/2012 34
How Does the Process Work?
Alarms are reviewed on a daily basis
Once validated there is a work order issued for the repair
Work directly with maintenance staff on difficult problems
Work order completed and issue closed
11/15/2012 35
How Many Energy Alarms are There?
• More than 400 validated work orders have been addressed
since summer of 2010 and $600,000 were realized.
11/15/2012 36
Questions?
11/15/2012 37