THE THIRD INTERNATIONAL SYMPOSIUM

ON THERMAL-FLUID DYNAMICS 2022

(ISTFD 2022 )

27-31 July, 2022 Xi'an China

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Davide Del Col

University of Padova, Padua, Italy


Davide Del Col is full professor at University of Padova (Italy), where he teaches “Refrigeration and heat pump technology” and “Renewable energy technologies”. He is Coordinator of the Master degree in Energy engineering at University of Padua , Secretary of UIT (Italian Union of Thermofluidodynamics), Member of Scientific Council of ICHMT, Secretary of Commission B1 of IIR (International Institute of Refrigeration), Paris. He is the responsible of the research group "STET - Sustainable Thermal Energy Technologies", running the Lab of heat transfer with phase change, the Solar energy conversion lab and the Lab of refrigeration and heat pumps. At present he is the coordinator of the ESA Programme: Condensation in microgravity, 2019-2022, with partners from Europe and Canada. Scientific responsible for many international and national projects and projects funded by private companies, he is inventor of three patents (two of them granted to private companies). According to Scopus, he has 161 cited documents, with over 4600 citations and h-index=36.


Title:  Effect of steam velocity during dropwise condensation


Abstract: Starting from the nanoscale up to the macroscale, DWC involves millions of droplets per square meter. The maximum dimension assumed by a droplet before sliding is characterized by the departing radius: it is the radius at which the droplet starts to sweep through the surface as a consequence of the acting forces (gravity force, adhesion force, drag force induced by the flowing vapor). In the literature, the effect of vapor velocity is not accounted for in available DWC models. Experimental results during DWC of steam are presented. A method for the estimation of the droplet departing radius and heat transfer coefficient in presence of vapor velocity is proposed.