Green Boilers: Energy and Carbon Savings

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Green BoilersEnergy and Carbon Savings

• International Facility
• Management Association
• September 15, 2009

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Today's Discussion

• Introduction to M2G Boiler Technology
• What it is
• How it Works
• U.S. Installations and Pilot Results

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What is M2G Technology?
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M2G Technology

• Microprocessor based technology
• Controls boiler cycling
• Reduces waste heat while retaining building
  utility

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M2G Technology

• A device that matches boiler operation with true
  building demand

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M2G Technology

• Has its own instrumentation
• Monitors building thermodynamics through
  measurement and analysis of boiler water
  temperatures.

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M2G Technology

• A device that works at the boiler controller
  level
• Protective of boilers with respect to thermal
  stressing loading

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M2G Technology

• Easily installed
• Attaches to the boiler
• All wiring is local to the specific boiler.

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M2G Technology

• Compatible with existing controls and operations
• Dynamic and self adjusting
• Flexibly adapts to
• temperature resets,
• scheduling,
• seasonal,
• operator,
• and BMS operating changes.

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M2G Technology

• Failsafe design

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M2G Technology

• Low cost with high return on investment

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M2G Technology

• Reduction in energy use and carbon emissions

Carbon Emissions
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How M2G Technology Works
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Heat loss to flue gas, 18
Heat transferred to system, 80
Radiated heat loss, 2
Heat from fuel 100
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Typical Hot Water Boiler Operation

• Boilers operate at a relatively high temperature,
  generally 160F to 180F
• Boiler operating temperature is not directly tied
  to building demand, boilers maintain temperature
  even when there is no building demand
• Once the target temperature is reached the boiler
  allows a variance before it re-fires (hysteresis)
• This happens over and over again, all day, day
  after day
• This can be extremely energy inefficient

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

• Comparison of two days with the same ambient
  temperature.
• Total burner runtime is reduced by 30.
• Lead boiler fires are reduced by 20.
• Lag boiler fires are reduced by 27.
• Overall energy and carbon emissions were reduced
  by 30.

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Review

• We sit below the BMS
• We work with systems with or without a BMS
• The M2G is not a time delay system
• We do not simply reset the thermostat
• We do not turn off the system for a fixed period
  at a time
• We allow a dynamic exchange with the boiler
• Through sensors on the flow and return
• We work at the boiler control level

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Compliant with Boiler Industry Codes and Standards

• Boiler Industry Standards and Requirements
  Compatible
• Boiler Controls must be independent systems
• Boiler sub-systems require hardware interlocks
• Boiler controllers require independent safety
  circuits
• Boilers require Flame Safeguard Controls
• Greffens M2G wires directly into the primary
  control circuit
• Has been designed to be compliant with industry
  safety standards
• Backward Compatible, works on installed boilers

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Pilot Methodology

• Normal pilot period 30 days
• Side by Side Comparison 1 day on, 1 day off
• Independent pilot measurement and control
  hardware
• Dent Loggers (Time of Use)
• Eagle/Signal 24 hour toggle timer
• Temperature Monitoring (internal and outside)
• In-situ testing with all controls fully operative
• Test status is not indicated to operations

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M2G Installations - USA
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Atria West Los Angeles, California Jones Lang
LaSalle
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The M2G Fitted
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(No Transcript)
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The Results
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Nissan Distribution Center Aurora,
Illinois Firings 41 Reduction Energy
Savings 14.7 Reduction Payback Period 9
Months Interior Temperature Same
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(No Transcript)
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Cabrini High School Allen Park,
Michigan Firings 47 Reduction Energy
Savings 11 Reduction Payback Period 14
Months Interior Temperature Same
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(No Transcript)
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M2G Operation Has No Effect On Comfort Level
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Plaza Towers Atlanta, Georgia Firings 46
Reduction Energy Savings 22
Reduction Payback Period 6 Months Interior
Temperature Same
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(No Transcript)
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Sysco Foods Canton, Michigan Firings 16
Reduction Energy Savings 17
Reduction Payback Period 6 Months Interior
Temperature No Impact
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Summary

• Controlling cycling behavior can provide
  significant savings
• Greffen offers a green solution that addresses
  customers energy and carbon emissions challenges
• What other product offers this level of savings,
  price-point and payback and installs in two
  hours?

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Q/A
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