Time–temperature data are smoothed by B-spline approximation.

When water temperature is less than 65 °C, there is no film boiling. However, there exists a Leidenfrost point at 70 °C.

When the water temperature is 25 °C, the critical heat flux first increases and then decreases with increasing nozzle pressure.

At nozzle pressure of 3 bar, the critical heat flux decreases and then increases when water temperature varies from 25 °C to 70 °C.