- Pool boiling has been investigated for many years and there are several models for the prediction of the nucleate pool boiling heat transfer. However, there are large discrepancies among these models. Most of the existing models depend on the nucleation site density and the bubble dynamics parameters, such as bubble growth rate, departure diameter and frequency. Thus, the performance of the heat transfer models can be affected by the models used for the prediction of the bubble dynamics parameters. In this paper, an experimental study was conducted to measure the bubble growth rate in saturated pool boiling of de-ionised water on a smooth copper surface at atmospheric pressure. The measurements were conducted only for the isolated bubble regime. A smooth surface was selected to avoid the uncertain effects of surface microstructure on bubble dynamics. The obtained experimental data were compared with some existing bubble growth models. The results demonstrated that bubble growth rate and departure diameter increase as wall superheat increases. The paper helps elucidate bubble dynamics and thus can contribute in understanding the performance and results given by existing mechanistic heat transfer models.