Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Ignition delay and burning rate analysis of diesel-carbon nanotube blends stabilized by surfactant: a droplet scale study.

Version 1 : Received: 16 October 2023 / Approved: 17 October 2023 / Online: 18 October 2023 (02:56:38 CEST)

A peer-reviewed article of this Preprint also exists.

Gallego, A.; Cacua, K.; Gamboa, D.; Rentería, J.; Herrera, B. Ignition Delay and Burning Rate Analysis of Diesel–Carbon Nanotube Blends Stabilized by a Surfactant: A Droplet-Scale Study. Energies 2023, 16, 7740. Gallego, A.; Cacua, K.; Gamboa, D.; Rentería, J.; Herrera, B. Ignition Delay and Burning Rate Analysis of Diesel–Carbon Nanotube Blends Stabilized by a Surfactant: A Droplet-Scale Study. Energies 2023, 16, 7740.

Abstract

In this study, ignition delay and burning rate are experimentally investigated in relation to the effect of pristine carbon nanotubes (CNTs), sodium dodecylbenzene sulfonate (SDBS), and diesel blends. Single droplet combustion tests were conducted in a combustion system for 21 days using CNTs at concentrations of 50 ppm and 100 ppm, that were dispersed in Colombian commercial diesel and stabilized by SDBS. Additionally, recordings of the combustion were collected, and the Shadowgraph optical method was utilized for monitoring the evolution of droplet size during combustion. The measurements were done over a four-week period. The results demonstrated that the temporal stability has a direct impact on the single droplet combustion tests because a concentration of CNTs of 100 ppm showed higher stability than those achieved by 50 ppm. Consequently, improvements were found with a concentration of 100 ppm, for instance, thermal conductivity increased by about 20%, ignition delay time by 16.2%, and burning rate by 30.5%.

Keywords

Ignition delay; Burning rate; Carbon nanotubes; Commercial diesel; sodium dodecylbenzene sulfonate.

Subject

Engineering, Energy and Fuel Technology

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