Nucleate boiling is the most efficient and technically manageable heat transfer mechanism. In this thesis, we experimentally evaluated the boiling process of water and calcium carbonate/water mixture at three different heat fluxes and three different durations of experimental run. The data obtained by monitoring the temperature fields with a high-speed IR camera were processed with Matlab software. Key boiling parameters, such as density of active nucleation sites, bubble growth time, nucleation frequencies and bubble footprint diameters were obtained. Compared to pure water, boiling in calcium carbonate mixture provided higher local heat transfer coefficient during bubble growth phase. In addition to that, local heat fluxes shown significant asymmetric distribution around active nucleation sites during bubble growth. Results of our study can be used to further study contribution of different heat transfer mechanisms involved in nucleate boiling and also to develop empirical end mechanistic models.
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