کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8076766 | 1521471 | 2014 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Low temperature Stirling engines pressurised with real gas effects
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The simulation model developed for the preliminary analysis of Stirling engines takes into account the losses of mechanical power and the efficiency of the regenerator with two adimensional coefficients, on the basis of experimental data available in literature. Comparisons between the working fluids were made having fixed the value of these two parameters. The results from this simplified analysis can be taken into consideration when evaluating the potential of these Stirling engines with real gas. They revealed that an engine cycle with a maximum pressure 3-4 times greater than the critical pressure and using a fluid with a critical temperature close to the minimum temperature of the engine cycle, gives an increase in power about 2.5 times greater than the case with ideal gas and an increase in cycle efficiency of around 50 percent. Such a result means that the use of fluid mixtures as the working fluids now becomes interesting, since the critical point of mixtures can be gradually adapted to meet design requirements.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy - Volume 75, 1 October 2014, Pages 225-236
Journal: Energy - Volume 75, 1 October 2014, Pages 225-236
نویسندگان
Fernando Sala, Costante M. Invernizzi,