Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Determination of Nukiyama and Leidenfrost Temperatures for Hydrocarbons using the Droplet Evaporation Method
Submission Author:
Max William Reis , SP
Co-Authors:
Arthur Vieira da Silva Oliveira, Rogério Gonçalves dos Santos, Max William Reis
Presenter: Max William Reis
doi://10.26678/ABCM.COBEM2017.COB17-2012
Abstract
Boiling usually an efficient mechanism of heat exchange, presenting high heat transfer coefficients. The study of this phenomenon is based on experiments of great complexity, making it difficult to identify relevant parameters for practical applications, such as the Nukiyama and Leidenfrost temperatures. The objective of this research was to obtain the temperatures of Nukiyama and Leidenfrost, from the droplet evaporation of different fluids on a heated surface, measuring the lifetime of the droplet through a digital camera. The fluids tested were: ethanol, iso-octane, n-heptane and a mixture of 11,1% ethanol and 88,9% n-heptane respectively. The results were compared with data in the literature. Despite the difficulty of comparing the results found for mixtures with the correlations and experimental data from other authors, the method showed to be effective for the determination of these critical temperatures.
Keywords
Droplets Evaporation, Hydrocarbons, Leidenfrost Point, Nukiyama Point
