کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
648877 | 1457206 | 2008 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Local stability analysis of a non-endoreversible refrigerator
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Local stability analysis of a non-endoreversible refrigerator Local stability analysis of a non-endoreversible refrigerator](/preview/png/648877.png)
چکیده انگلیسی
The purpose of this paper is to present a local stability analysis of a non-endoreversible refrigerator operating at the minimum input power P for given cooling load R absorbed from the cold reservoir, in the isothermal couplings of the working fluid with the heat reservoirs TH and TL(TH > TL) through a couple of thermal conductors, both having the same heat conductance α and using I to describe internal dissipations of the working fluid. A non-endoreversible refrigerator system that is modeled by the differential equation may depend on the numerical values of certain parameters that appear in the equation. From the local stability analysis we find that a critical point of an almost linear system is a stable node. After a small perturbation the system state exponentially decays to steady-state with either of two relaxation times that are a function α, I, R, TL and the heat capacity C. We can exhibit qualitatively the behavior of solutions of the system by sketching its phase portrait. One eigenvector in a phase portrait is the non-zero constant vector, and the other is a function of α, I, R, TH and TL. Finally, we discuss the local stability and energetic properties of the non-endoreversible refrigerator.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Thermal Engineering - Volume 28, Issues 11â12, August 2008, Pages 1443-1449
Journal: Applied Thermal Engineering - Volume 28, Issues 11â12, August 2008, Pages 1443-1449
نویسندگان
Yuewu Huang, Dexing Sun,