Heat transfer regimes and critical heat flux during spray cooling with subcooled water

The results of an experimental investigation on heat transfer and critical heat flux during surface cooling with a dispersed flow of deeply subcooled liquid are presented. The study was carried out using a pressure nozzle with a mass flow rate of water of 24.2 g/s. A record critical heat flux of 13.2 MW/m2 was achieved in these experiments. The findings indicate that the onset of boiling within the liquid film formed on the impact surface during spraying leads to a notable reduction in the temperature non-uniformity across the heater.