Dynamics of and heat transfer to a butane droplet evaporating in water |
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| Authors: | M R Mokhtarzadeh-Dehghan MSc Dic PhD MASME A A El-Shirbini MSc DIG PhD MIMechE CEng MCIBS |
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| Institution: | (1) Department of Mechanical Engineering, Brunel University, Uxbridge, UB8 3PH Middlesex, England;(2) Department of Mechanical Engineering, Imperial College of Science and Technology, SW7 2BX London, England |
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| Abstract: | The dynamics and the associated heat transfer process of butane droplets evaporating in water are investigated experimentally. New data are presented for the instantaneous growth, rise velocity and the heat transfer coefficient. The behaviour of the bubble-droplet, from the initial to the final stages of evaporation, is divided into four regions and is described with reference to similarities with the behaviour of a spherical droplet, spheroidal bubble-droplet, large spheroidal bubble and spherical cap bubble. The equations which represent the results for the heat transfer coefficient are given. |
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