کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
683229 888997 2010 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Simple and inexpensive method of wood pellets macro-porosity measurement
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Simple and inexpensive method of wood pellets macro-porosity measurement
چکیده انگلیسی

A novel simplified stereometric measurement method for determining the macro-porosity of wood pellets through geometrical approach was successfully developed and tested. The irregular ends of pellets of circular cross-section were sanded flat so that their geometry becomes cylinder and their volumes evaluated using mensuration formula. Such formed cylindrical pellets were loose or tap filled to selected volumes to evaluate the macro-porosity and the constant specific weight. The method was extended to evaluate actual wood pellets properties. Overall macro-porosity of actual wood pellets was determined as 41.0±2.5%41.0±2.5% and 35.5±2.7%35.5±2.7%, mean bulk density as 670±29kgm-3 and 731±31kgm-3, and classified as “Class-3:Medium” and “Class-3&4:Medium to Low” for loose and tapped fills, respectively. Hausner ratio and Carr’s compressibility index classify wood pellets as “freely flowing.” The developed stereometric method can be used as a handy inexpensive laboratory procedure to estimate the macro-porosity of different types and makes of wood pellets and other similar packaged materials.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 101, Issue 16, August 2010, Pages 6528–6537
نویسندگان
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