کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
245252 501981 2008 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Finite-time thermodynamic modelling and analysis of an irreversible Otto-cycle
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی مهندسی انرژی و فناوری های برق
پیش نمایش صفحه اول مقاله
Finite-time thermodynamic modelling and analysis of an irreversible Otto-cycle
چکیده انگلیسی

The performance of an air standard Otto-cycle is analyzed using finite-time thermodynamics. In the irreversible cycle model, the non-linear relation between the specific heat of the working fluid and its temperature, the friction loss computed according to the mean velocity of the piston, the internal irreversibility described by using the compression and expansion efficiencies, and the heat-transfer loss are considered. The relations between the power output and the compression ratio, between the thermal efficiency and the compression ratio, as well as the optimal relation between the power output and the efficiency of the cycle are indicated by numerical examples. Moreover, the effects of internal irreversibility, heat-transfer loss and friction loss on the cycle performance are analyzed. The results obtained in this paper may provide guidance for the design of practical internal-combustion engines.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Energy - Volume 85, Issue 7, July 2008, Pages 618–624
نویسندگان
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