Experimental Investigation Of The Water Droplets Evaporation On An Inclined Surfaces By Taguchi And ANOVA Optimization Analysis

Abstract We experimentally investigated the evaporation characteristics of a sessile water droplet on a glass substrate with different surface roughness levels. The influence of five parameters that each have tree levels are evaluated for the evaporation process: substrate temperature, surface roughness, droplet volume, water droplets initial temperature, and inclination angle of the glass substrate. A Taguchi orthogonal array design of L27 is used to determine minimum candidate trial points of the experimental works, and more experiments have been carried out to determine the effects precisely. Then Analysis of Variance has been used to evaluate the evaporation times for the sessile droplets. The results show that evaporation times decreases with increasing substrate temperatures, increasing inclination angle of the substrate, and increasing initial water droplets temperatures while evaporation times increases with increasing surface roughness and increasing droplet volumes.A linear regression fit derived via ANOVA analysis for the evaporation time and the best mean deviation found to be 10% from the experiments. The experimental results compared to the literature and derived correlations. And the proposed correlation has given good results considering experimental and literature data.