ISSN Online: 2377-424X
ISBN Print: 978-1-56700-474-8
ISBN Online: 978-1-56700-473-1
International Heat Transfer Conference 16
STUDY OF THE FACTORS AFFECTING THETEMPERATURE FIELD DISTRIBUTION DURING DROPLET EVAPORATION
要約
In the natural world and industrial production, sessile droplet evaporation is a common phenomenon. It is well
known that droplet evaporation will absorbs heat from the surrounding environment and play a role in cooling,
so we have a comprehensive study on the temperature field distribution during the process of droplet evaporation.
Our topic will research on the droplet evaporation from experimental and theoretical aspects. The research
measured volume of Al2O3-H2O nanofluid sessile droplet with three different concentrations, three different sizes in nanoparticle on a glass under five heating temperatures. The pure liquid(alcohol) will be dropped on copper. The heated substrates' temperature were 30°C, 35°C, 40°C, 45°C and 50°C, respectively. We measured the contact angle, contact diameter, evaporation rate and analyze droplet surface's temperature field. The results
showed that the nanofluid evaporation results in a non-uniform temperature profile along the free interface, the
temperature of center is the lowest and the temperature of edge is the highest. When the droplet was alcohol and the substrate is copper, the cooling effect of droplet will happen obviously.