کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9691671 1458197 2005 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nonlinear models for mechanical energy production in imperfect generators driven by thermal or solar energy
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Nonlinear models for mechanical energy production in imperfect generators driven by thermal or solar energy
چکیده انگلیسی
In this paper we show how the nonlinear kinetics of energy transfer in propelling fluids and imperfect (non-Carnot) thermal machines can be imbed into the contemporary theory of irreversible energy generators and heat pumps. We quantitatively describe effects of nonlinear heat transfer assuming that heat fluxes are proportional to the difference of temperature in certain power, Ta. We also show that the energy and particle transports can be treated either in a conventional way or as peculiar chemical reactions. In the latter case a recent approach distinguishes in each elementary transfer step two competitive (unidirectional) fluxes and the resulting flux follows as their difference. Nonlinear imperfect systems are investigated in the context of efficiency, heat flux, entropy production and mechanical power, for steady and unsteady operations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 48, Issues 3–4, January–February 2005, Pages 719-730
نویسندگان
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