by phs utilities and engineering department · 2016-01-14 · phs strategic energy master plan...

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




2013 Projected 4% $1.0M



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


11/15/2012 15

Simches Building

0

500,000

1,000,000

1,500,000

2,000,000

2,500,000

3,000,000


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


MM

BT

U

Simches Thermal Consumption

FY 08

FY 12

11/15/2012 17

Yawkey Building


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


MM

BT

U

Yawkey Utility Consumption, MMBTU

FY 08

FY 12



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


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


Mlb

Yawkey Steam Consumption

FY 08

FY 12

11/15/2012 21

Cox Building


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


MM

BT

U

Cox Utility Consumption, MMBTU

FY 08

FY 12



11/15/2012 23

Cox Building

0

100,000

200,000

300,000

400,000

500,000

600,000

700,000


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


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

by phs utilities and engineering department · 2016-01-14 · phs strategic energy master plan...

Documents