کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9691673 1458197 2005 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Optimal control of forced cool-down processes
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Optimal control of forced cool-down processes
چکیده انگلیسی
The optimization of forced cooling-down processes is performed using the optimal control theory. Four objective functions are shortly presented and minimized. They include the consummated cooling fluid mass and some dissipation measures, as the entropy generation and variants of the lost available work. The minimum duration for the cooling process with minimum lost available work normally exceeds the minimum duration for the cooling processes with minimum mass of cooling fluid but the reverse is sometimes true. The minimum lost available work does not depend on the initial and final temperatures of the cooled body but just on the duration of the cooling process. The cooling strategies with linear (or slightly non-linear) time dependence of cooled body temperature are based on rather strong non-linear increase in the optimum cooling fluid mass flow rate at the end of the cooling process.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 48, Issues 3–4, January–February 2005, Pages 741-748
نویسندگان
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