1

Smart Campus SummitEnergy Management Data Utilization

Oct 2017

Lanny Joyce P.E, CEMDirector, Utilities & Energy ManagementMark J Howe P.E, CEMManager Utilities Distribution & Energy Management

Oct 2017 2

• Overview of Cornell energy use• Forecasting and Tracking Building Energy Use • Dashboards • Building Automation

–Energy Management–Controls Systems

• Central Utility Plant• Questions

Agenda

Cornell Energy Use

3Oct 2017

Central Energy Plant provides

Electric for about 14,000,000 GSF

Steam for 12,800,000 GSF

Cooling for 8,700,000 GSF

Cornell University District Energy

Annual Utility Budget ~ $60 million

Enterprise Units

•Electric •35 MW peak•200 GWh/yr

•Steam •380 kpph peak•1,000,000 klbs/yr

•Chilled Water•25,000 Tons peak•45,000,000 ton-hrs/yr

•Water and Sewer

Fully Metered (>1200 meters) Oct 2017 4

Steam Energy Use

5Oct 2017

0

20,000

40,000

60,000

80,000

100,000

120,000

140,000

160,000

180,000

Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun

Actual Steam Sales (klbs) FY15 by billing month

Metered Building sales:970,000 klbs

Steam use in summer:Reheat; dehumidification and process loads

Peak Hourly Steam Load: 380,000 lbs. per hour (every minute we boil 760 gallons of water)

Electric Energy Use

6Oct 2017

Metered Building sales:213 million kwh

Usage is quite flat thru out the year, average about 18 million kwh/month

Peak load is 35MW, which is about 1/1000 of the New York State peak

-

5,000,000

10,000,000

15,000,000

20,000,000

25,000,000

Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun

Actual Electric Sales (kWh) FY15 by billing month

Chilled Water Use

7Oct 2017

Metered Building sales:42 million ton-hrs.

About 47% of usage occurs in July/Aug/Sept

Winter usage for process cooling and some space cooling

Peak load is 25,000 tons(1 ton is the heat rate required to melt one ton of ice in a day)

-

1,000,000

2,000,000

3,000,000

4,000,000

5,000,000

6,000,000

7,000,000

8,000,000

Jul

Aug

Sep

Oct

Nov De

cJa

nFe

bM

ar Apr

May Jun

Ton-

hrs.

Actuals Chilled Water Sales FY15 by billing month

10

11

12

13

14

15

0

500,000

1,000,000

1,500,000

2,000,000

2,500,000

FY_2

000

FY_2

001

FY_2

002

FY_2

003

FY_2

004

FY_2

005

FY_2

006

FY_2

007

FY_2

008

FY_2

009

FY_2

010

FY_2

011

FY_2

012

FY_2

013

FY_2

014

FY_2

015

FY_2

016

FY_2

017_

Budg

et

FY_2

018_

Budg

et

GSFMill

ions

MMBTU/YR CAMPUS GSF CHW SALES_MMBTUELECTRIC SALES_MMBTU STEAM SALES_MMBTU

WestCampus

ECRF & EHOB

Weill Hall

Duffield

Physical Sciences & AHDC

Human Ecology

Milstein

~186 kBtu/Sf-Yr ~146 kBtu/Sf-Yr

Gates

Klarman

Building Energy Sales: History 2000 - 2018

Oct 2017 9

Steam, $18

Steam, $14

Electric, $9

Electric, $7

Chilled Water, $5

Chilled Water, $4

Total Billed , $31.3

Total Billed , $25.0

$-

$5

$10

$15

$20

$25

$30

$35

Pre_ECI Project Post_ECI Project

Mill

ions

Post ECI Project Billed Savings: $6.3 millionECI Project Facts:• Over 60 Facilities• Over 90 projects• Project Cost $33

million• Project Savings: $6.3

million at billed rates

ECI project savings% energy savings from ECI project

Steam: 126,000 klbs 21%

Chilled Water: 5,000,000 ton-hrs 25%

Electric: 19,000,000 kwh 17%

Oct 2017 10

• Overview of Cornell energy use• Forecasting and Tracking Building Energy Use • Dashboards • Building Automation

–Energy Management–Controls Systems

• Central Utility Plant• Questions

Agenda

Oct 2017 11

Facility Metering

Oct 2017 12

Steam Condensate MeteringVortek Shedding Meter

Condensate meter with Duplex pumps

MOXA Serial to Ethernet Convertor

Oct 2017 13

Chilled Water Metering

Campus Ethernet Connection

Electromagnetic Flow Element

Supply and Return temperature Sensors

Mag Flow Meter

FP93 Energy Computer

Oct 2017 14

• Second meter slide

Electric MeteringPowerScout BacNet –Modbus power meter

MOXA Serial to Ethernet Convertor

Oct 2017 15

• Meters Used For:– Billing: eDNA, EBS, KUALI– Tracking Performance– Forecasting– Real Time Usage Analysis

• Load Growth• Outage performance

– Engagement

Facility Metering

Oct 2017 16

• Forecast is developed for each meter – 100 chilled water, 150 steam, 300 electric – Steam and chilled water require weather

regression• Reviewed / Updated each budget year based on

performance. • Track performance quarterly• Building and Campus EUI is tracked and managed• EUI reporting is part of online IPP metrics• Accounts for: conservation, projects, utilization

Forecasting

17

An Example: Duffield Steam forecastingUse FY14 to develop formula to forecast FY16

y = 0.001x2 + 1.2x + 1100

-

500

1,000

1,500

2,000

2,500

3,000

3,500

4,000

4,500

5,000

0 200 400 600 800 1000 1200 1400 1600

Mon

thly

Ste

am U

se (k

lbs)

Monthly Heating Degree Days

Steam Actuals FY4 Budget FY16 Poly. (Budget FY16)

Oct 2017

18

An Example: Day Hall Chilled WaterUse FY13 to develop FY16 forecast

y = 0.7368x + 8852

-

5,000

10,000

15,000

20,000

25,000

30,000

- 5,000 10,000 15,000 20,000 25,000 30,000

Mon

thly

Chi

lled

Wat

er U

se (t

on-h

rs.)

Monthly Enthalpy Hours

Actual CHW FY13 Budget FY16 Linear (Budget FY16)

Oct 2017

Example – Mann Library after ECI

19Oct 2017

-

50,000

100,000

150,000

200,000

250,000

300,000

350,000

400,000

- 5,000 10,000 15,000 20,000 25,000 30,000

ton-

hr.

Monthly Enthalpy-hours

FY2012 FY2013FY2015 FY17 BudgetPoly. (FY17 Budget)

Chilled water:Tracking the building performance for Mann Library, ECI efforts have significantly reduced overall building consumption

Forecasting was updated based on this new building performance, which is reflected in the FY17 budget

Example – Mann Library after ECI

20Oct 2017

Electric:Tracking the building performance for Mann Library, ECI efforts have significantly reduced overall building consumption

Forecasting was updated based on this new building performance, which is reflected in the FY17 budget

- 500,000

1,000,000 1,500,000 2,000,000 2,500,000 3,000,000 3,500,000 4,000,000 4,500,000 5,000,000

FY2012 FY2013 FY2014 FY2015

kwh

Oct 2017 21

• For Budget Forecast: – Review Building Performance– Compare actuals versus Forecasting based on the actual weather versus “typical”

weather– Update accordingly --- Mann Library example

• During the fiscal year:– Review quarterly performance, comparing actuals with the original budget and the

weather adjusted budget (using current year’s weather).– Note performance outliers– Determine course of action:

• Active Management• Have ECCT (Energy Conservation Controls Team) visit building and check set-

points / schedules

Tracking and Updating

Oct 2017 22

17

6

11

30

34

16

21

28

14

43

15

24

21

29

18

48

51

60

73

95

- 10 20 30 40 50 60 70 80 90 100

3802 Paul Milstein Hall

1003 Ives Hall Faculty Wing

1026 Warren Hall

2013A Klarman Hall

2044 Gates Hall

New Buildings/Renovations EUI (kBTU/GSF) Office-like

Chilled Water Electric Natural Gas Steam Total EUI

7

30

57

70

80

22

49

59

89

81

-

55

62

56

71

82

89

91

135

187

241

305

- 50 100 150 200 250 300

2045 Upson Hall

1011 Human Ecology Building

2076 Physical Sciences Building

1166 NY State Vet Diagnostic Cntr

1014 Weill Hall

New Buildings/Renovations EUI (kBTU/GSF) Lab-like

Chilled Water Electric Natural Gas Steam Total EUI

Oct 2017 23

Campus EUI (kBtu/GSF)Track performance multiple ways:

(1) pre-ECI performance versus post-ECI performance

184.3

157.6

0 25 50 75 100 125 150 175

PROJECTED_EUI

ACTUAL_EUI

FY15 CEP - ITHACA CAMPUS KBTU/GSF

(2) Actual performance versus Budget (weather adjusted)

165.4

157.9

0 25 50 75 100 125 150 175

PROJECTED_EUI

ACTUAL_EUI

FY15 CEP - ITHACA CAMPUS KBTU/GSF

Oct 2017 24

• Forecast is developed for each meter – 100 chilled water, 150 steam, 300 electric – Steam and chilled water require weather regression

• Forecasts include ECI, ECCT and renovation impacts• Reviewed / Updated each budget year based on

performance. • Track performance quarterly• Building and Campus EUI is tracked and managed• EUI reporting is part of online IPP metrics

Review

Oct 2017 25

• Overview of Cornell energy use• Forecasting and Tracking Building Energy Use • Dashboards • Building Automation

–Energy Management–Controls Systems

• Central Utility Plant• Questions

Agenda

Oct 2017 26

• Non-Techie, Eye Friendly

• Easy to set up competitions

• Quick look at building usage

• Social media• Open to all

• SAS application• Began 2011,

converting to HTML5 in 2017

Dashboards

http://buildingdashboard.net/cornell/#/cornell

Oct 2017 27

• EMCS Portal– Techie

• Real time energy use by facility/ Utility

• Download to CSV/Excel

• Cornell created• Includes weather data• Open to all

Dashboards

http://portal.emcs.cornell.edu/

28

Available Campus Resources

Electronic Billing System (EBS): instep-ebs.fs.cornell.edu/

Real-time building energy usage via the Energy Management Control System (EMCS): portal.emcs.cornell.edu

Cornell Building Dashboard: buildingdashboard.cornell.edu

Oct 2017

Oct 2017 29

• Overview of Cornell energy use• Forecasting and Tracking Building Energy Use • Dashboards • Building Automation

–Energy Management–Controls Systems

• Central Utility Plant• Questions

Agenda

Oct 2017 30

• 225 buildings with digital/microprocessor based controls• Vendor and custom head-end databases/graphics/trends• EMCS central alarm monitoring and response team, 24/7• 12,500 controllers with over 1.3 million points connected

Building Automation and Control Systems

Oct 2017 31

• 15 virtual servers in a redundant VM cluster with storage array• Dedicated systems integration and development team (BACSI)• Utility plant and building systems collaboration

– Ability to back up each operation– IT and Controls staff shared resources

• Historian databases dedicated to business functions, plant ops, building controls, metering, public access

Building Automation and Control Systems

• 10 million sq ft, 100 buildings• 9 technicians, 1 working supervisor, .5 engineer

oversight • Highly skilled controls techs• $1.5 million annual shop expense• 5-15 % savings, budgeted at 8 % • Billed cost annual savings is ~ twice cost

ECCT Staffing and Cost

32Oct 2017

Oct 2017 33

• Overview of Cornell energy use• Forecasting and Tracking Building Energy Use • Dashboards • Building Automation

–Energy Management–Controls Systems

• Central Utility Plant• Questions

Agenda

Oct 2017 34

• Central Utility Plants – 10 Facilities– PLC’s

• 20 Allen Bradly• 4 Square D

– Remote I/O• Pressure, temperature, flow,

valve position– Remote Devices

• Meters• Transmitters w/ analog to IP

conversion– Servers

• 2@ water filter plant• 2 @ maple ave substation• 6 @ central energy plant

– ~20 Workstation screens

Central Utility Plants Controls

Oct 2017 35

• History and Evolution – Prior to 1990- Proprietary vendor, first gen– 1991 upgrade to second gen– Ethernet and PLC’s introduced in 2000– PLC’s took off ~2010 with CCHPP project, dramatically expanding the

Ethernet infrastructure– 2010-2017 continuing evolution of network architecture and security– Where will we be in 2020-2030?

Central Utility Plants Controls

Oct 2017 36

Questions