Abstract
There is a growing need for the ways of treating non-utilized heat effectively for reducing CO_2 emission. Direct-contact evaporative heat transfer between two kinds of immiscible liquid can be utilized for such technological applications. In order to meet the demand for heat with temperatures close to the ambient, for example, a fundamental experiment was carried out on the evaporating phenomena around a continuous horizontal interface of water (upper) and PF5050 (bottom) liquid pools. This interface was heated by downward jet flow of water, and unique evaporation phenomena of PF5050 appeared. The evaporation rate was much increased due to the effect of the intensity of jet impingement.
