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Evaluation of Commercially Available Small Scale Biomass Electrical Generation Technologies Appropriate to the Yukon

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Evaluation of Commercially Available Small Scale Biomass Electrical Generation Technologies Appropriate to the Yukon ( evaluation-commercially-available-small-scale-biomass-electr )

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4.0 RECOMMENDATIONS An evaluation of “available” small-scale biomass-fired electrical generation technologies appropriate to the Yukon shows that there are few technologies which can be considered to be proven reliable and commercially viable. Four technology areas were considered: Gasification coupled with an Internal Combustion Engine; Organic Rankine Cycle (ORC); Brayton Cycle and Stirling Engine. Based on the criteria that a commercially reliable system should have at least five units operating at customer sites, only two gasification companies and three ORC suppliers were considered sufficiently advanced to warrant more detailed evaluation. Future evaluations should include not only economics and a proven track record but also appropriate sizing (for both heat and electricity) for the target community and ability to follow load variations. Special consideration should also be given to feedstock requirements and compatibility with local supply and resources to maintain that supply. The following small-scale biomass-fired electrical generation technologies are considered “viable” for further evaluation, at this time: Gasification: Community Power Corporation Borealis Wood Power (Spanner Re2 GMBH) Organic Rankine Cycle: Infinity Turbine Adoratec Turboden At present no suitable Brayton cycle, Stirling cycle or Fast Pyrolysis-based units are available that would be suitable for installation at Haines Junction or at any other community in the Yukon. Gasification systems, although the most active field in terms of research and development do not have a strong track record. Both the Spanner system, represented in Canada by Borealis Wood Power and Community Power Corporation have only one system at the “demonstration” stage in Canada. Spanner has over 150 operating in Europe and as long as the limitations of the technology are respected could be a strong contender for operation in a remote community. Community Power Corporation has a few units operating in the US although most of these are government-backed “demonstrations” and there are still some economic and technology issues to be addressed. ORC systems are well established in Europe but have yet to make significant inroads in North America. Of the three systems considered “viable” only one company, Turboden, is actively pursuing the North American market. Turboden’s offerings have been limited, to date, to their larger systems (1-2 MWe) which may be too large for many remote communities. 28

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Evaluation of Commercially Available Small Scale Biomass Electrical Generation Technologies Appropriate to the Yukon

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