Green Boilers: Energy and Carbon Savings September 24, 2013.

Green Boilers:Energy and Carbon Savings

September 24, 2013

GREFFEN (Green Efficient Energy) SystemsGREFFEN (Green Efficient Energy) Systems

• We focus on Public and Private sector organizations

• Our products work with client’s existing heating and BMS systems– The M2G is a microprocessor technology which installs in about 3 hours– Commercial boiler applications that use gas and/or oil to heat buildings

• Few natural gas energy saving solutions are available in the marketplace

GREFFEN’s TechnologyGREFFEN’s Technology• Over 4,000 Units installed in Europe

• UL Certified in the United States

• Certified as an Energy Technology List product in Europe

• GREFFEN has U.S. Distribution rights

• Customers using our technology include DEFRA (Department Of Environment Food and Rural Affairs), The Royal Mail, Oxford University, Cambridge University and:

U.S. Customers U.S. Customers

• Ford Motor Company Hewlett Packard• Baylor Medical Center Lockheed Martin• Oracle Yahoo!• Michigan State University Wells Fargo • Bell Helicopter/Textron State Street Bank • Mound Road Correctional Facility Michigan Lapeer Correctional Facility• Jackson Correctional Facility Orchard Lake Saint Mary• Palm Terrace – Orange County Atria West – Los Angeles• Mancelona Schools Loyola University• College of Charleston Marist School• Vanguard University University North Carolina Charlotte• Iron Mountain Motorola

• Internal Revenue Service Sysco Foods• L3 Communications Dow Chemical• Electronic Arts Pfizer • Cymer Carolinas Health Care• Selfridge Air Force Base State University of New York• Cabrini High School Life Technologies • Donaldson Corporation Bronner’s• Sovereign Partners Pilgrim Manor Nursing Home• Guilford Schools Brooks City Base• New Brookside Apartments Berry Center• Fulton County Jail (Georgia) Union Bank• Cypress Fairbanks Schools University of South Carolina • University of Georgia South Carolina Dept. Corrections

U.S. Customers U.S. Customers

Sample of U.S. M2G InstallationsSample of U.S. M2G Installations

• Baylor Medical Center - 14% Savings

• Donaldson Company, Inc. - Bloomington, Minnesota – 20%

• Chicago Public Schools – 17% Savings

• University of Texas Dallas, Texas – 14.4% Savings

• Yahoo, Northern California – 15.6% Savings

• IRS, Georgia – 18.7% Savings

• Loyola University, Chicago – 10%

• State Street Bank, Boston, Massachusetts – 9.3% Savings

• Michigan Department of Corrections - 18% Savings

• Sysco Foods, Canton, Michigan – 17% Savings

• Bell Helicopter – 12.5% Savings

Utility and 3rd Party TestingUtility and 3rd Party Testing

• Detroit Edison – Mancelona Schools (Year over Year Study)

– One year independent study High School = 12.8%, Middle School – 12.1%

• Southern California Gas Company

– After a year long study recommended for SoCal Gas program

• Atmos Energy - Greenville, Texas

– Conducted independent measurement at L3 Communications in Texas

• Sandia National Labs – Albuquerque, New Mexico

– DOE National Laboratory conducting an independent pilot

• Gas Technology Institute (GTI) – Chicago, Illinois

Hello Frank –

I will be approving the files for Mancelona schools this week. I wanted to let you know the % savings and the incentive that I will be approving in case you have questions before I finalize. Please respond by Friday if you have concerns. Middle – 12.1% savingsHigh – 12.8% savings

Payment will be to you in about 4 weeks.

Thank you,

Rachel Meck, CEM | EngineerDTE Energy | Your Energy Savings866-796-0512 Phone |[email protected] | YourEnergySavings.com

Fax | 248-808-8907 Cell | 313-664-1900 x 70517 Direct

CHICAGO, March 21, 2012 - “A lot of technology solutions exist that help owners analyze or plug into automated systems to generate energy savings,” said Joseph Andronaco, Regional Engineering Director for Jones Lang LaSalle. “In the past, such technology was expensive; but now, options with similar functions are available that aren’t cost prohibitive.”

For example, several years ago the typical price for boiler controllers was $80,000 with a payback period of five years, Andronaco said. However, technical advances are now allowing owners to invest in simple solutions that offer the same results for a fraction of the price—even as low as between $5,000 and $10,000.

Within its management portfolio, Jones Lang LaSalle is regularly using advanced intelligent boiler control software to analyze how quickly and slowly water heats up. The M2G boiler control unit simply screws on to the side of any boiler. It monitors the temperature of the water in the flow and return every 10 seconds. That information is recorded, along with the heat transfer rates at both the first and second stage firings.

When a loading demand is made, the M2G system automatically checks the latest data it has stored and decides whether it is more economical to retain first stage firing or to introduce a second stage firing. The result is a substantial fuel reduction during less demanding situations, while ensuring maximum capacity during heavy load periods. It optimizes boiler efficiency, typically resulting in a 20 percent gas reduction and a payback period of eight to12 months.

“Small investments that come with big results are wise investments for owners of all types, but especially those of middle-market portfolios where the resources to invest in top-of-the-line automated systems might not be available,” Andronaco said…”

What is the M2G Technology?What is the M2G Technology?

M2G Technology …M2G Technology …• Microprocessor based technology

• Reduces natural gas consumption by minimizing boiler dry-cycling

M2G Technology …M2G Technology …

Definition•Dry Cycle – When a boiler fires to compensate for standing losses instead of building heat demand.

Target Temperature175°F

Dead Band (Firing Temp.)170°F

Surroundings70°F

Dry Cycle Sequence1.Boiler losses heat to surroundings2.Water temp. drops below the dead band3.Boiler Fires to compensate for heat loss4.Boiler turns off after arriving at target temp.


Real Building Demand vs. Dry Cycling•Monitors and logs the return water temperature to determine if building demand is real

•Also, monitors and logs supply temperature to determine the heat transfer and to avoid condensation issues in the boiler

•Temperatures are recorded every 10 seconds and the boiler is released if there is a true heat demand present

Return Temperature’s Slope Building Demand M2G Action Small False Hold Off Boiler

Large Real Allow Boiler to Fire

M2G response to loading demand(boiler return water temperatures - by minute)

BMS will fire the boiler here at the set point

Heavy LoadºF

165165165163160158156156

Light Load – Standing loss or “false” callºF

165163163162162161161160160160160158156154153151149

BMS and M2G will fire the boiler here at

the set point

To here…

M2G might fire the boiler here at the same set point saving 4 minutes, but

will probably delay longer

…or even here


SafeguardsThe M2G will allow the boiler to fire if:•The boiler has been held off by the M2G by more than 15 minutes

•The supply temperature drops more than 8°C (14.4°F)

•The return temperature drops more than 3°C (5.4°F)

•A real call for heat is detected

•The M2G collects data every 10 seconds

Additional Safeguards•The M2G will not turn off a running boiler

•The M2G will not turn on a boiler

•The M2G fails closed to insure boiler operations are not affected

•Opto-isolators insure circuits are only monitored and not charged


Installation•Compatible with existing controls and operations

– Building Management Systems (BMS)

– Outdoor Temperature Reset

– Lead/Lag Controls

•Does NOT require any breaking of water lines

•Minimal installation time (~3 Hours)

•No maintenance required – “Set and Forget”

Laboratory Verification

• Gas Technology Institute – Chicago, Illinois• Energy Systems Laboratory – College Station, Texas

Gas Technology InstituteTest Setup•Designed and built a model to simulate a building’s heating and cooling loads•Winter thermal loads from a Chicago Public School were used in the simulation•The thermal load profiles were attained from the Department of Energy for use with EnergyPlus

Gas Technology Institute

Results•The initial laboratory testing was positive and the results are being forwarded to the member utilities

•GTI wants to expand to field testing of the M2G

Energy Systems LaboratoryTexas A&M University

Test Setup•M2Gs were installed at the Cypress Ridge High School in Houston, Texas

•The Energy Systems Laboratory (ESL) monitored the boiler from November 16, 2010 through December 22, 2010 with the M2G alternating day-on/day-off

Location Boiler Make Boiler Output

Cypress Ridge High School (2) Sellers 8,370,000 Btu/hr

Energy Systems LaboratoryTexas A&M University

Results•ESL observed a 21% reduction in gas consumption with the M2G

•Data was normalized using heating degree days

•There was no significant change in the interior temperature

Active Bypass Average Interior Temperature 72.3°F 71.6°F

RIVERSIDE ENERGY EFFICIENCY LABORATORY ENERGY SYSTEMS LABORATORY TEXAS ENGINEERING EXPERIMENT STATION TEXAS A&M

UNIVERSITY

January 24, 2011 Mr. Felix Lopez SECO

“On November 17, 2010 I was present for the M2G installations in Houston. At the conclusion of the 30 day test period, I received the test data from the pilot locations and have verified the energy savings of the M2G. The M2G boiler sequencing controller produced an average savings in natural gas of approximately 21% over the pilot period and demonstrated a viable energy saving technology for the school district. The return on investment for the M2G was approximately 11 months.”

Dr. Michael Pate Director, Riverside Energy Efficiency Laboratory Energy Systems Laboratory Texas A&M University College Station, Texas 979-458-2264

University of Georgia

• M2Gs are installed at the Center for Applied Genetic Technologies

• Preliminary results have been presented to UGA

Pilot Methodology• Data loggers and Timers were install along with the M2G • The data loggers are placed on the boiler’s fuel valve to monitor boiler run-time and cycling• The timer bypasses the M2G every other day to provide a comparison of boiler’s run-time and

cycling behavior with and without the M2G• Bypassing the M2G on a alternating 24 hour basis minimizes confounding factors such as

weather as well as changes made within the building or to the boiler system

University of GeorgiaCenter for Applied Genetic Technologies

Location Building Size Boiler Make Boiler Output

Athens, GA 67,160 sq. ft. (2) Weil McLain 2,713,000 Btu/hr

UGA Preliminary Results• Pilot commenced on March 28, 2013 and concluded May 6, 2013

Average Run Time per Day HDD Run Time/HDD Energy Savings Bypass 402.8 min. 111.5 3.6 min. 16.7% Save 389.1 min. 128.7 3.0 min.

Bypass 1.3Save 3.0

Bypass 3.4Save 8.0

Bypass 153.1Save 64.9

M2G Reduction 58%

UGA - CAGT - 2013

Reduction in Cycling

Summary StatisticsAverage Run-time (min.)

Average Off-time (min.)

Average Cycles Per Day

UGA Boiler Cycling

0

50

100

150

200

250

3/22

/13

3/27

/13

4/1/

13

4/6/

13

4/11

/13

4/16

/13

4/21

/13

4/26

/13

5/1/

13

5/6/

13

5/11

/13

Num

ber o

f Cyc

les

per D

ay

Center for Applied Genetic Technologies

No Effect On Comfort Level

Average Indoor Temperature

Bypass Active

CAGT 71.5 °F 71.6°F

Ford Motor Company• M2G pilots were carried out at Ford Motor Company

• October 1, 2011 – November 30, 2011

• Fairlane Plaza North (290 Town Center, Dearborn, MI)

Fairlane Plaza North


Dearborn, MI 147,772 sq. ft. (2) Ajax 2,000,000 Btu/hr

Ford Pilot Results• Pilot commenced on October 1, 2011 and concluded November 30, 2011

Bypass 591.9Save 467.6M2G Savings 21.0%

Bypass 3.1Save 6.7

Bypass 3.4Save 10.1


M2G Reduction 63%

Fairlane Plaza North - Fordland - 2011


Summary StatisticsEnergy Use per day (min.)

Average Run-time (min.)



Ford Pilot Results

0

50

100

150

200

250

Num

ber

of C

ycle

s

Fairlane Plaza North

BypassSave

Carolinas Health Care System – Mt. Holly


Belmont, NC 48,000 sq. ft. (2)Parker Boilers 1,700,000 Btu/hr

Carolinas HealthCare - Mt. Holly Results• Pilot commenced on May 14, 2012 and concluded July 2, 2012

Bypass 1191.2Save 858.5M2G Savings 27.9%

Bypass 2.2Save 3.9

Bypass 2.5Save 10.8


M2G Reduction 54%

Carolinas HealthCare System - Mt. Holly -2012Summary Statistics

Energy Use per day (min.)

Average Run-time (min.)




M2G Customer Year-Over-Year Analysis

• Used actual customer year-over-year metered/billing data

• Compared normalized gas consumption before and after the M2G’s installation

• Normalization was done using heating degree days

Internal Revenue ServiceAtlanta Distribution Center


Chamblee, GA 328,000 sq. ft. (1) Weil-McLain 6,000,000 Btu/hr

Internal Revenue Service

R² = 0.8141

R² = 0.9016

0

5,000

10,000

15,000

20,000

25,000

0 100 200 300 400 500 600 700

Cons

umpti

on (C

CF)

Heating Degree Days

Pre-M2G

M2G

IRS Building – Chamblee, Georgia CCF HDD CCF/HDD Energy Savings

Pre-M2G 76,166 1,452 52.5 18.7% M2G 88,626 2,077 42.7

Wells FargoBuilding D


St. Louis, MO 528,821 sq. ft. (2) Cleaver-Brooks 10,461,000 Btu/hr (ea.)

Wells FargoBuilding D

Wells Fargo Building D – St. Louis, MO MCF HDD MCF/HDD Energy Savings

Pre-M2G Average 83708 2130 39.3 14% M2G 90205 2669 33.8

Notes:•During the pilot analysis leaking reheat valves were found

•The energy savings do NOT include the savings generated by fixing the reheat valves

•There was a 35,000 sq. ft. building addition during the M2Gs’ first year

Summary

• Controlling cycling behavior provides significant savings

• Laboratory testing has verified the M2G’s savings

• M2G customers have documented strong year-over-year savings

• Greffen offers a green solution that addresses customer’s energy and carbon emissions challenges

• The M2G offers natural gas energy savings, an aggressive price-point and installs in three hours

Green Boilers: Energy and Carbon Savings September 24, 2013.

Documents

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