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Compressed Natural Gas for Area Fleets


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Compressed Natural Gas for Area Fleets

  1. 1. Knoxville, Tennessee
  2. 2. 2 Why We are Here • We are promoting Natural Gas as a transportation fuel • We are partnering with others to build public access CNG fueling stations • We are creating a network of CNG fueling stations across the state of Tennessee • We are working with fleets to assess and implement NGVs into their fleets
  3. 3. 3 Natural Gas Facts • Natural gas is very safe  Lighter than air – dissipates when released  High ignition temperature: 1000F – 1100F  Limited range of air/fuel combustion ratio (5- 15%)  Colorless, odorless, non-toxic substance  Doesn’t leak into groundwater  Comprehensive fuel tank, vehicle and station design/mfg codes & standards • Natural gas is an inherently clean fuel  Natural gas is mostly methane: one carbon atom, CH4  Diesel – C14H30; Gasoline – C8H18; Propane – C3H8  Less NOx, soot and greenhouse gases than petroleum fuels  NGVs produce between 93-95% fewer overall toxics and reduces greenhouse gas emissions by 23-29% compared with diesel- and gasoline-fueled vehicles
  4. 4. 4 Why CNG? • Environmental Factors o Air quality o Health issues • Issues with foreign oil o Uncertainty of oil pricing o U.S. is 5% of world population but uses 25% of the world’s oil o 65+% of U.S. is imported, mostly for transportation o Expanding Asian economies are putting upward pressure on world energy prices, especially oil • Tightening EPA restrictions o Tightening restriction on HDVs creates performance loss and increased O&O costs. o Large percentage of population live in non-compliance areas • Global cap and trade o International pressure to reduce pollution
  5. 5. 5 Environmental, energy security and – now, more than ever due to domestic natural gas abundance - economic market drivers are behind the trend toward greater use of NGVs. While fleet fuel use has been the primary focus, potential consumer market is now spurring additional investment in infrastructure. • A growing selection of light-, medium- and heavy-duty NGVs are available from OEMs and SVMs, delivering performance and reliability that are on par with gasoline and diesel counterparts. • A variety of fueling options are available – LDCs, E&Ps, leasing companies, other customers and independent fuel retailers – both NGV- focused and, now, more traditional fuel retailers - are engaging to develop fueling infrastructure. from NGVAmerica Why CNG?
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  10. 10. 10 Natural Gas Facts • Natural gas is an abundant domestic fuel  98+% from North America  Well-developed distribution infrastructure  With shale gas discoveries, our supply is estimated at 120 years! • Growing interest in renewable bio-methane  Landfills, sewage, animal/agri-waste  Energy crops – R&D into cellulosic biogas  The United States could produce the equivalent of 10 billion gallons of gasoline annually from renewable natural gas (bio-methane)
  11. 11. 11 Bio-Methane in East Tennessee PBG Energy, Inc. has a contract for development of a public CNG fueling station with a utility that currently receives 200 - 400 dkt per day of bio- methane from the local landfill. At 300 dkt per day, this supply can displace 2400 gallons of foreign fuel per day with a domestic renewable energy. Bio-methane is a resource available, today. We can use our current natural gas production and infrastructure as we increase our bio-methane production.
  12. 12. 12 Vehicle Considerations
  13. 13. 13 Target NGV Applications • Municipal Vehicles • School Buses • Refuse Trucks • Transit Vehicles • Delivery Fleets • Service Fleets • Utilities other than Gas • Any Return Trip Vehicle
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  15. 15. Understanding the Options• CNG Fueling Station Design • CNG Fueling Station Sizing • CNG Fueling Station Cost
  16. 16. Types of Stations • Time fill - Fleet and other vehicles returning to a location
  17. 17. 18 Lower Cost than Fast Fill Sized to fuel vehicles while idle at location Economical alternatives from large to small Time Fill Station
  18. 18. Types of Stations • Cascaded Fast Fill - Typical public station or fleet situation needing faster fill times utilizing storage as well as compression
  19. 19. Understanding the Cost
  20. 20. Transit Station Design • Three 1600 scfm compressors • Twin tower gas dryer • Approximately 2,400 gge’s per hour capacity • 36,000 cf of storage for buffer • Scada master control • Transit dispenser Estimated Cost $4,000,000
  21. 21. Large Station Design • Three 500 scfm compressors • Approximately 750 gge’s per hour capacity • 36,000 cf of storage or about 100 gallons usable • Weights and Measures certified high flow dispenser
  22. 22. Estimated Large Station Cost Source: Atlanta Gas Light
  23. 23. Medium Station Design• Two 400 scfm compressors • Approximately 400 gge’s per hour capacity • 36,000 cf of storage or about 100 gallons usable • Weights and Measures certified dispenser
  24. 24. Estimated Medium Station Cost Source: Atlanta Gas Light
  25. 25. Small Station Design • Two 75 scfm compressors • Approximately 75 gge’s per hour capacity • 36,000 cf of storage or about 100 gallons usable • Weights and Measures certified dispenser
  26. 26. Source: Atlanta Gas Light Estimated Small Station Cost Text
  27. 27. Not Small Enough Yet?
  28. 28. Fleet Time Fill Station
  29. 29. Fleet Time Fill
  30. 30. 31 CNG Cheaper Cleaner Domestic
  31. 31. 32 Make the Change
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  33. 33. 34 PBG Energy Solutions •Public-Private partnership with utility provides off-site public fueling available to fleets. •Provides a fast fill option to back up a lower cost time fill fleet operation. •Provides reliability by insuring natural gas availability. •Provides experienced operation and management of facility. Fleet NGV Development
  34. 34. 35 •Natural Gas is a Clean, Domestic, and Economical transportation fuel •Sending more than a billion dollars a day overseas for oil hurts our economy •Natural gas is plentiful and is easily utilized to displace foreign oil •The economics of CNG are very favorable to forge alliances between fleets and end users, and natural gas distribution companies (gas utilities) Conclusions
  35. 35. 36 •Jobs •Cleaner Environment •Energy Security •Economic Engine It’s about: Doing something positive Changing the World
  36. 36. 37 Special thanks to: TREEDC, Atlanta Gas Light, Tennessee Gas Association, East Tennessee Clean Fuels Coalition NGV America and Clean Vehicle Education Foundation,, and for their help and information provided for this presentation. Thanks For Your Time and Interest Contact: Robert Patterson 865-256-2612