Exploring heat transfer efficiency in non-boiling spray cooling

• DOI: 10.1016/j.ijft.2023.100504
• Publication Date: 2023-10-30T19:14:20Z
• Authors: Anton Surtaev; Ilya Vladyko; Nikolai Miskiv; Vladimir Serdyukov; Konstantin Pavlenko
• Keywords: Subcooling

Spray cooling today is one of the most effective methods for high heat flux application. Since there are numerous factors influencing transfer in spray cooling, some issues related to effect nozzle-to-surface distance, and liquid subcooling on efficiency non-boiling mode remain debated. This study dedicated a comprehensive experimental investigation impact various factors, including distance from nozzle heater (2-35 mm), density (up 6.9 MW/m2), flow rate (8.8-25.2 mL/s), initial temperature (20 80°C) using different nozzles with varying angles (30-90°). Heat results were obtained based field measurements high-speed infrared thermography. It shown that has significant spatial distribution cooling. each heating surface an optimum at which maximum observed relationship their determination proposed. The coefficient deeply subcooled (80 K) practically independent flux. At low levels K), increases increase associated influence evaporation film total transfer. analyzed, compared generalized data literature, correlation proposed determining