دانلود مقاله انگلیسی رایگان:تجزیه و تحلیل قانون دوم احتراق فشرده سازی کنترل شده اصلاح - 2020
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  • Second-law analysis of the reforming-controlled compression ignition Second-law analysis of the reforming-controlled compression ignition
    Second-law analysis of the reforming-controlled compression ignition

    سال انتشار:

    2020


    عنوان انگلیسی مقاله:

    Second-law analysis of the reforming-controlled compression ignition


    ترجمه فارسی عنوان مقاله:

    تجزیه و تحلیل قانون دوم احتراق فشرده سازی کنترل شده اصلاح


    منبع:

    Sciencedirect - Elsevier - Applied Energy, 263 (2020) 114622: doi:10:1016/j:apenergy:2020:114622


    نویسنده:

    Amnon Eyal, Leonid Tartakovsky⁎


    چکیده انگلیسی:

    This paper presents the optimization of energy conversion in a novel reforming-controlled compression ignition system, combining the benefits of low-temperature combustion with high-pressure thermochemical recuperation (mostly from the perspective of the second law of thermodynamics). Further, new insights into ways of improving efficiency are provided. A promising renewable fuel dimethyl ether is analyzed for the first time as a primary fuel. A comprehensive analysis of various factors influencing exergy destruction in the reformingcontrolled compression ignition system in their complex interdependence is also performed for the first time. Exergy mapping results show that approximately 33% of the exergy supplied to the system is destroyed owing to irreversible processes in the cylinder itself, and approximately 5% is destroyed in the reforming system (intercooler, vaporizer, and reformer). The reformer is the main source of exergy destruction in the reforming system. Approximately 45% and 38% of the engine exergy destruction is related to chemical reaction and in-cylinderwalls heat interaction, respectively. The results indicate that the efficiency improvement due to second-law optimization reaches up to 7.1%, and if the compression ratio is increased to 18:1 instead of 16:1, this reaches up to 9.2%. The higher improvement is achieved at the highest loads.
    Keywords: Homogeneous charge compression ignition | Fuel reactivity control | Thermochemical recuperation | Exergy analysis | Hydrogen | Dimethyl ether


    سطح: متوسط
    تعداد صفحات فایل pdf انگلیسی: 14
    حجم فایل: 2484 کیلوبایت

    قیمت: رایگان


    توضیحات اضافی:




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