Abstract
This paper reports experimental results of both visual observation for liquid-solid contact situations and surface temperature measurement when liquid spray cooled superheated surface. A single crystal sapphire plate was cooled by HFE-7100 liquid spray from film boiling to transition boiling situation. The obtained results show that wetting initiation temperature was affected by initial surface temperature, liquid flow rate density and spray nozzle position. Wetting initiation temperature ranged between Leidenfrost temperature and spontaneous nucleation temperature of HFE-7100.
