Investigation and experimental analysis of the bubble departure diameter in pure liquids on horizontal cylindrical heater

Abstract

In this study, partial pool boiling heat transfer and bubble departure diameter on horizontal cylindrical heater in heat flux range between 103 and 105 w m−2 were investigated. Pure liquid water, Ethanol and Acetone were utilized as the fluids for the system. Aluminum, stainless steel 316A, copper and brass were considered as the materials for the heater’s surface rod. Different degrees of roughness were applied for copper and aluminum surface. Bubble departure diameter and heat transfer coefficients were chosen for the system measurement. The empirical model for bubble departure diameter was estimated by using experimental data. This model is based on dimensionless numbers that through which experimental data are shown from literature and the present the study is in good agreement with the model.