Experimental study has been conducted to study the heat transfer characteristics of the hydrocarbons as the base fuel and water emulsions. The focus is mainly paid on the effect of the ambient emulsion temperature and alcohol additives on the boiling and its inception of fine water droplet dispersed in the emulsions. Heat transfer was measured using an electrically heated horizontal thin Pt wire. It is concluded that there is the transition point in the heat transfer coefficient, which is just above the boiling point of emulsified component of water. The heat transfer of water in fuel emulsions and effect of alcohol additives on it were also revealed.

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