An experimental research is conducted analysing the behaviour of small water droplets (10-15 microliters) gently deposited on hot non-porous ceramic surfaces. In particular the conditions determining the onset of nucleate boiling are emphasized, and solid surface cooling is monitored via infrared thermography. The results provide insight into the mechanisms of dropwise evaporative cooling in presence of nucleate boiling. THe non-intrusive method of thermography is also used to study the peculiar thermal behavior of industrial ceramic surfaces subjected to high heat fluxes.
Water droplet boiling on hot, non-porous, ceramic surfaces / Barozzi, Giovanni Sebastiano; Corticelli, Mauro Alessandro; T. R., Maciver; Tartarini, Paolo. - STAMPA. - I:(1998), pp. 191-202. (Intervento presentato al convegno XVI Congresso Nazionale sulla Trasmissione del Calore tenutosi a Siena nel 18-19 Giugno 1998).
Water droplet boiling on hot, non-porous, ceramic surfaces
BAROZZI, Giovanni Sebastiano;CORTICELLI, Mauro Alessandro;TARTARINI, Paolo
1998
Abstract
An experimental research is conducted analysing the behaviour of small water droplets (10-15 microliters) gently deposited on hot non-porous ceramic surfaces. In particular the conditions determining the onset of nucleate boiling are emphasized, and solid surface cooling is monitored via infrared thermography. The results provide insight into the mechanisms of dropwise evaporative cooling in presence of nucleate boiling. THe non-intrusive method of thermography is also used to study the peculiar thermal behavior of industrial ceramic surfaces subjected to high heat fluxes.
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