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Cogeneration Facility. The University of North Carolina at Chapel Hill Cogeneration Systems Energy Services Department Phil Barner- Cogeneration Systems Manager Ray DuBose – Director, Energy Services. Joshua Walker Gore (1852-1908) and Gore Building at Cogeneration Facility

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cogeneration facility

Cogeneration Facility

The University of North Carolina at Chapel Hill

Cogeneration Systems

Energy Services Department

Phil Barner- Cogeneration Systems Manager

Ray DuBose – Director, Energy Services

slide2

Joshua Walker Gore (1852-1908) and Gore Building at Cogeneration Facility

This building bears the name of Joshua W. Gore,

a science and engineering professor at Carolina.

cogeneration or chp combined heat and power
Cogeneration or CHP( Combined Heat and Power )
  • Simultaneous production of electricity and steam
  • High thermal efficiency
  • Low environmental impact
u s average generating efficiencies
U.S. Average Generating Efficiencies

100%

80%

UNC Cogen •

60%

40%

20%

0%

unc ch cogeneration
UNC-CH Cogeneration

Air

Boilers

Water

Coal

Turbine

Steam

Generator

150 psi

40 psi

Electricity

Heating

Cooling

Hot Water

Sterilization

Cooking/Dishwashing

Condenser

generator dispatch
Generator Dispatch

Total UNC Load

Price

Duke Purchased kW

UNC Generated kW

circulating fluidized bed combustion
Circulating Fluidized Bed Combustion

Clean coal technology

Nitrogen Oxides (NOx) --

furnace temperature

Sulfur dioxide (SO2) --

sorbent

nsps 40cfr60 subpart db
NSPS 40CFR60, Subpart Db

Typical Operation

Permit Limits

  • SO2
    • 90% reduction
    • 1.2 lbs/MMBtu
  • NOx
    • 0.6 lbs/MMBtu
  • Opacity
    • 20%
  • Particulate
    • 0.5 lbs/MMBtu
  • SO2
    • 92% reduction
    • 0.2 lbs/MMBtu
  • NOx
    • 0.4 lbs/MMBtu
  • Opacity
    • 3%
  • Particulate
    • 0.01 lbs/MMBtu
slide16

New Boiler MACT Permit

Typical Operation

Permit Limits

  • Mercury
    • 0.000 003 lbs/MMBtu
  • HCl
    • 435 lb/hr
  • Mercury
    • 0.000 000 75 lbs/MMBtu
  • HCl
    • 4.4 lbs/hr
prologue to the future unc climate action plan and cogen
Prologue to the Future:UNC Climate Action Plan and Cogen
  • Climate Action Plan Published September 2009
  • Two Cogen Projects over next 5 years:
    • Landfill Gas to Energy
    • Biomass Co-firing at Cogen
project benefits
PROJECT BENEFITS
  • Reduction in greenhouse gas emissions
        • Methane destruction
  • The emissions reduction attributable to this project are equivalent to:
        • Removing the emissions of 7,860 automobiles

or

        • Planting 9,750 acres of forest
project benefits22
PROJECT BENEFITS
  • Cost savings from avoided purchased power
  • Makes beneficial use of otherwise wasted gas
  • LFG project alone would make Carolina North carbon neutral for 12 to 15 years.
biomass cofiring in cfbs issues
Biomass Cofiring in CFBs: Issues
  • Fuel Supply Chain and Cost
  • Front End Fuel Handling
    • Storage
    • Feed Systems
  • Impact on Combustion and Heat Transfer Surface
  • Baghouse Impacts
  • Ash Disposal Impacts
  • Amount of Carbon Reduction
biomass cofiring in cfbs plans
Biomass Cofiring in CFBs: Plans
  • Test Protocols – March 2010
  • Dried Wood Pellets Tests – Spring 2010
  • Torrified Wood Tests – Fall to Winter 2010/2011
  • Evaluation and Implementation Plan Development – 2010/2011
  • Burn 2012 - ? (Fuel Supply Chain and Extent of Required Mods)