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Biomass Heating System Prepared by: Roy Miller ASU for Arizona Gila County, The Town of Payson, Payson Public Library M

Biomass Heating System Prepared by: Roy Miller ASU for Arizona Gila County, The Town of Payson, Payson Public Library May 9, 2007. Problems Forest health Drought and fire issues Waste wood. Background. Study goals Investigate biomass heating system impact Economic feasibility

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Biomass Heating System Prepared by: Roy Miller ASU for Arizona Gila County, The Town of Payson, Payson Public Library M

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  1. Biomass Heating System Prepared by: Roy Miller ASU for Arizona Gila County, The Town of Payson, Payson Public Library May 9, 2007

  2. Problems Forest health Drought and fire issues Waste wood Background • Study goals • Investigate biomass heating system impact • Economic feasibility • Community impact

  3. Introduction to biomass heating systems Types of systems direct combustion Gasification Combined heat and power (CHP) Anaerobic and aerobic digestion Price competitive biomass heating fuel System use in Europe

  4. Solid biomass systems Pellet boilers and Pellet Stoves Logwood boilers GARN Wood Heating System TARM Boiler System Woodchip boilers

  5. Study Demonstration Requirements System costs and benefits Comparison between current electric system and Logwood Boiler

  6. Biomass resources and requirements Biomass availability Fuel Scenarios Maintenance Capabilities Maintenance requirements

  7. Project economics (Methodology) Payson Public Library heating expenses February to December of 2006

  8. Project economics (Estimates) GARN system costs ~$30000 (Cost allows for full retrofit, GARN system alone costs $11,000) Wood fuel costs ~$180 per cord (without maintenance costs) Estimated need of 10 cords/ year Total fuel costs $1800/ year + service and maintenance charges Total current yearly electric costs are $1037/ year

  9. Project economics (Estimates) Most Expensive Scenario Annual additional cost of at least $763 per year Least Expensive Scenario Possible annual savings of $1037 per year

  10. Project economics Qualitative factors to consider Community education, forest health, renewable energy resources Showcase eco-friendly technology Reduction in air pollution

  11. Conclusions Financial conclusions System costs need subsidizing to recover initial investment Without subsidizing costs, breakeven unlikely Fuel Scenarios Maintenance Capabilities Maintenance requirements

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