In recent decades, renewable energies (e.g., wind and solar) were introduced to reduce the dependency of diesel generation in remote areas islands power systems. However, cannot be eliminated entirely because uncertainty intermittent sources. this regards, low load operation (below 30% maximum rated power) is considered achieve highest possible penetration energy hybrid diesel) system for isola...

This study analyzed factors that influence the ignition delay characteristics of n-heptane/methane-blended fuel. The effects chemical species, exhaust gas recirculation rate, compression ratio, cool/hot flames, and combustion chamber conditions (temperature, pressure, O2 concentration) were determined using CHEMKIN Pro. experiment for verification 550–1000 K at 15 bar with 50% H2/50% CH4 main r...

In this work, the effect of seven different sample orientations from 0° to 90° on pilot and non-pilot ignition of PMMA (poly(methyl methacrylate)) exposed to radiation has been studied with experimental and numerical methods. Some new and significant conclusions are drawn from the study, including a U-shape curve of ignition time and critical mass flux as sample angle increases for pilot igniti...

Methane is the major component of natural gas, which one most widely used fuels. A large number shock tube (ST) and rapid compression machine (RCM) ignition delay measurements are available in literature for validating its detailed combustion mechanisms. set experimental data was collected methane combustion: studies STs (4939 points 574 datasets) RCMs (582/69). In total, 5521 643 datasets from...

Nanoscale thermites such as the composite mixture of nano-sized aluminum and molybdenum trioxide powders possess several technical advantages such as much higher reaction rate and shorter ignition delay, when compared to the conventional energetic formulations made of micron-sized metal and oxidizer particles. In this study, the self-propagation of combustion wave in compacted pellets of nanosc...

A model for the combustion of butanol is studied using a recently developed theoretical method for the systematic improvement of the kinetic mechanism. The butanol mechanism includes 1446 reactions, and we demonstrate that it is straightforward and computationally feasible to implement a full global sensitivity analysis incorporating all the reactions. In addition, we extend our previous analys...

This study addresses the influences of uncertain amounts of residual impurities in the computation and experimental determination of ignition-delay times in hydrogen-air mixtures in shock tubes. Experimental methods for quantifying impurities in shock tubes are described and utilized. These methods are utilized to infer an equivalent amount of impurities as a function of the initial temperature...

Abstract The characteristics of auto-ignition in HCCI engines in the presence of charge stratification is studied theoretically using activation energy asymptotics. Some preliminary results on the effects of mixture stratification on the duration of burning and the sensitivity of ignition delay to initial temperature are presented. The analysis accounts for the effects of pressure rise due to p...