Parametric study of non-evaporative spray cooling on aluminum plate: Simulation and analysis

Abstract

Original scientific paper https://doi.org/10.2298/TSCI19S4393OAs the behavior of the spray cooling parameters, during cooling without phase change, is rarely considered and there are only little investigations on that matter, this work is focused on the influence of the parameters involved in water spraying cooling process of an aluminum plate at a temperature of 92 °C. A detailed study of the effects of mass-flow rate, fluid pressure and the nozzle height above the hot plate was achieved using the version 5.2 of the COMSOL Multiphysics code. First of all, the flow rate was varied from 0.497 up to 1 L/min. Then, the inlet pressure varied from 0.7 to 2.1 bars. The influence of nozzle-totarget distance is also tested since the simulations were carried out in a wide height range (100 to 505 mm). The effect of the studied parameters on the temperature, total internal energy, convective heat flux, Reynolds number, spray distribution and velocity was investigated.

Experimental study on the effect of the liquid/surface thermal properties on droplet impact

“…Recent studies have also focused on the heat spray cooling for electronic cooling purposes [5][6][7]. Heat spray cooling can cover a wide range of surface temperatures from cryogenic [8], medium [9] to very high surface temperatures [3]. Although heat spray cooling technique encompasses the injection of droplets in the form of spray of very small droplets and not a single droplet, insight into the interaction of one droplet with a hot surface is essential and can build fundamental understanding for spray cooling [10].…”

Archives of Thermodynamics

“…A specific experimental setup was elaborated in detail allowing the great potential on the performance of the PV cell by significant increasing of the total output power in circumstances of peak solar irradiation. A parametric analysis during spray cooling process [15,16] was conducted taking into account the thermodynamic behaviour of the fluid-flow on an aluminium plate at the temperature of 92 • C. Effects of total internal energy, convective heat flux, Reynolds number, spray distribution and velocity were carefully examined in order to better understand and control the temperature variation.…”