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Energy yield of black locust biomass fuel

Journal Article · · For. Sci.; (United States)
OSTI ID:6600444
Detailed analysis of 2 to 10-year-old black locust (Robinia pseudoacacia L). biomass components provided an accurate energy content and energy yield determinationa as well as an index defining a relative ceiling on the delivered cost for black locust biomass in comparison with other fuels such as coal and forest residues. Total energy content of individual biomass components ranged from 20.97 X 10/sup 6/ J/kg for leaf tissue to 19.23 X 10/sup 6/ J/kg for current years' growth. Annual total energy yields ranged from 33.75 to 76.79 X 10/sup 9/ J/ha/yr for 3 and 9-year-old stands, respectively. Nine-year-old stands also exhibited the highest annual net whole-tree and woody biomass (whole-tree less foliage) energy yields of 32.71 and 30.73 X 10/sup 9/ J/ha/yr. The net annual energy yield were consistently greater for whole-tree biomass compared with woody biomass due to foliage included in the whole-tree biomass. The relative cost indices maintained a high degree of variability between comparison fuels. Bituminous coal and forest residues were lowest with an overall mean cost index for woody biomass of $13.28/mt and $13.72/mt, respectively. Woody biomass maintained a greater relative index than whole-tree biomass over all age classes due to its inherently higher conversion efficiency. 18 references.
Research Organization:
Univ. of Kentucky, Lexington; Oklahoma State Univ., Stillwater
OSTI ID:
6600444
Journal Information:
For. Sci.; (United States), Journal Name: For. Sci.; (United States) Vol. 32:44; ISSN FOSCA
Country of Publication:
United States
Language:
English