کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
661226 1458127 2009 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Unsteady 2D coupled heat and mass transfer in porous media with biological and chemical heat generations
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Unsteady 2D coupled heat and mass transfer in porous media with biological and chemical heat generations
چکیده انگلیسی
The coupled two-dimensional heat and oxygen diffusion in a compost pile of sewage sludge obtained from domestic wastewater treatment was studied. The unsteady, coupled, non-linear mathematical model, solved through the finite volume method, includes the volumetric heat generation caused by the action of aerobic bacteria and by the oxidation of cellulose in a porous media. The numerical simulation allows the prediction for the pile shape and size effects on the heat generated and on oxygen consumption. Temperature and oxygen concentration transient distributions within compost piles are presented for different geometries. Heat (temperature) and mass transfer (oxygen) results indicate that the pile height has an important effect on the heating process and that keeping the compost pile height lower than 1.7 m the self-combustion of sewage sludge can be avoided.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 52, Issues 25–26, December 2009, Pages 5841-5848
نویسندگان
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