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
Sciencedirect - Elsevier - Applied Energy, 263 (2020) 114622: doi:10:1016/j:apenergy:2020:114622
Amnon Eyal, Leonid Tartakovsky⁎
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