The present research experimentally introduces novel corrective models to facilitate comparison and evaluation of the supercooling degree and critical nucleation radius of nanofluid phase change materials with surfactant. A dimensionless number (C parameter) is applied in the predictive models considering the essential thermophysical properties effective on solidification behavior (i.e., thermal conductivity, kinematic viscosity and surface tension). Based on theoretical analysis, the C parameter is defined and finally validated with experimental data. It is found that the models are capable of precise estimation. It is also observed that the C parameter is an effective factor on ratios of solidification characteristics, such as ratios of supercooling degree and critical nucleation radius, which can be extended to other characteristics.

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