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Abstract: . . . 30 35 40 Natural Gas Price [$/MMBtu] $3 $5 $7 $9 Figure 8. Simple Payback Period vs. Wood and Natural Gas Prices McNeil Technologies March 2003 20 Wood-Fired Heating System Analysis for Boulder County Parks and Open Space 9 Conclusions and Recommendations The intent of this study was to evaluate the feasibility of heating planned Boulder County facilities in Longmont, Colorado, with wood fuel. There is a large quantity of waste wood annually available, resulting primarily from forest thinning projects and urban tree trimming. Wood residue from Boulder County Parks and Open Space projects is currently . . . . . . state regulations. Mixed ashes and other residuals from pulp and paper manufacturers also have value as a soil amendment and lime substitute, but they do not meet the definition of wood ash as defined in this publication. The University of Georgia, in cooperation with several other organizations, is studying many of these other by-products. If these studies indicate that land application of these materials is appropriate, procedures for their use will also be developed. Testing Any supplier wishing to make wood ash available to the public for land application should first test the product. Testing . . . . . . sulfate (21-0-0-24S), urea (46-0-0) or ammonium nitrate (34-0-0). These fertilizers produce ammonia gas when placed in contact with high pH materials such as wood ash. (Excerpt from: Mahendra K. Misra, Kenneth W. Ragland, And Andrew J. Baker. Wood Ash Composition As a Function of Furnace Temperature. Biomass and Bioenergy Vol. 4, No. 2, pp. 103116, 1993. Pergamon Press Ltd. Great Britain. http://www.fpl.fs.fed.us/documnts/pdf1993/misra93a.pdf) Chemical analysis The concentration of different elements and the variation with temperature for different ash types was determined by ICPES, and the results . . . . . . (21-0-0-24S), urea (46-0-0) or ammonium nitrate (34-0-0). These fertilizers produce ammonia gas when placed in contact with high pH materials such as wood ash. (Excerpt from: Mahendra K. Misra, Kenneth W. Ragland, And Andrew J. Baker. Wood Ash Composition As a Function of Furnace Temperature. Biomass and Bioenergy Vol. 4, No. 2, pp. 103116, 1993. Pergamon Press Ltd. Great Britain. http://www.fpl.fs.fed.us/documnts/pdf1993/misra93a.pdf) Chemical analysis The concentration of different elements and the variation with temperature for different ash types was determined by ICPES, and the results are presented . . . . . . (0-63) 0.9 (0-11) 233 (35-1250) Other Chemical Properties 43% (22-92%) 10.4 (9-13.5) 75 (31-100) 100% 9.9 100 . . 0.7 6.0 10 55 . . 20 . 113 31 0.13 0.25 5.1 0.29 0.06 0.05 0.07 0.01 Limestone * Mean and (Range) taken from analysis of 37 ash samples McNeil Technologies March 2003 35 Wood-Fired Heating System Analysis for Boulder County Parks and Open Space . . . --3000,5,300,3141,91900
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