Abstract
The behavior of rewetting on a high superheated and dry surface, focusing on rewetting temperature just as collapse of saturated and subcooled film boiling was investigated experimentally. Saturated and subcooled impingement jet experiments were conducted by using a silver plate with 40.0× 40.0 mm (length × width) and pure water at atmospheric condition. The liquid subcooling was 0, 10, 20, 30, 40, 50 and 75K, respectivelity. Temperature of the test heater was measured by using a commercial separated-type infrared thermometer from a back side of it. The sputtering temperature, i.e., rewetting initiation temperature, was close to the value given by Nishio's correlation, 200℃, in spite of liquid velocity and liquid subcooling.
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