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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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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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Presentation Transcript
slide1
Biomass Heating System

Prepared by:

Roy Miller

ASU for Arizona

Gila County, The Town of Payson, Payson Public Library

May 9, 2007

slide2
Problems

Forest health

Drought and fire issues

Waste wood

Background

  • Study goals
    • Investigate biomass heating system impact
    • Economic feasibility
    • Community impact
introduction to biomass heating systems
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

solid biomass systems
Solid biomass systems

Pellet boilers and Pellet Stoves

Logwood boilers

GARN Wood Heating System

TARM Boiler System

Woodchip boilers

study demonstration requirements
Study Demonstration Requirements

System costs and benefits

Comparison between current electric system and Logwood Boiler

biomass resources and requirements
Biomass resources and requirements

Biomass availability

Fuel Scenarios

Maintenance Capabilities

Maintenance requirements

project economics methodology
Project economics (Methodology)

Payson Public Library heating expenses

February to December of 2006

project economics estimates
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

project economics estimates9
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

project economics
Project economics

Qualitative factors to consider

Community education, forest health, renewable energy resources

Showcase eco-friendly technology

Reduction in air pollution

conclusions
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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