TAILIEUCHUNG - Biofuels, Solar and Wind as Renewable Energy Systems_Benefits and Risks Episode 2 Part 1

Tham khảo tài liệu 'biofuels, solar and wind as renewable energy systems_benefits and risks episode 2 part 1', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 10 Biomass Fuel Cycle Boundaries and Parameters 237 The second parameter type is the individual parameters pk s and Ak s discussed in Section unique to a given module Sub-activity. In the BFCM treatment Ycrop and Ybfp variability relationships are examined separately from the pk values. Biomass Yield Parameters For a given BFC Ncrop to bfp Ycrop A Ybfp Here Ncrop to bfp is the BFC net fuel production Ycrop is the agriculture stage biomass crop yield A is the planted land area and Ybfp is the biofuel production stage yield. Another BFC general yield and biofuel energy relationship is Ebiofuel Ncorn to bfp UEfuel e Here Ebiofuel is the BFC created biofuel energy and UEfuel e is the biofuel useable energy see Section . Combining and rearranging these two equations Ebiofuel A Ycrop Ybfp UEbiofuel Ebiofuei A is a measure of the BFC crop and biomass fuel production efficiency in creating the biofuel. This equation enables biofuel yield evaluation see Section at both the local regional and national fuel cycle production levels. Clearly gains in crop and process yields mean higher biofuel energy per acre planted. Template Parameters For each template Activity there is an assigned k value. This k value is used to index the pk value assigned to that Activity and it s associated Sub-activities. The pk value and it s uncertainty Ak are specific numerical values used in the analysis. Consider for example in Template 1 Table under the Facilities Phase there is the Seed Plant Sub-phase. It s assigned Activity and associated Sub-activities index value is k 5. Therefore it s numerical values used in an analysis are assigned to the p5 and A5 parameter in the BFCM equations discussed here see also Section for specific illustration The pk s are used to calculate the Smodule j value of interest Smodulej fj pk and the Ak s are used to quantify the uncertainty Aj associated with that Smodulej see Section . The fj pk equations

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