The influence of the nozzle geometry on pressure losses and energy efficiency in industrial cooling and drying systems was experimentally investigated. Three circular nozzles with different outlet geometries were analysed. Two POM-C nozzles with 8 and 12 mm diameters, and one aluminium nozzle with a diameter of 8 mm were evaluated through pressure and volume flow measurements. Loss coefficients were calculated to quantify the energy dissipation associated with each design. Results indicate that the POM-C nozzles exhibit substantially lower loss coefficients ( ) compared to the aluminium nozzle ( ), demonstrating superior energy efficiency and minimal pressure loss. Measurement deviations at very low pressures were attributed to sensor limitations. These findings confirm that optimised nozzle geometry significantly enhances energy performance, providing both environmental and economic advantages.     «

The influence of the nozzle geometry on pressure losses and energy efficiency in industrial cooling and drying systems was experimentally investigated. Three circular nozzles with different outlet geometries were analysed. Two POM-C nozzles with 8 and 12 mm diameters, and one aluminium nozzle with a diameter of 8 mm were evaluated through pressure and volume flow measurements. Loss coefficients were calculated to quantify the energy dissipation associated with each design. Results indicate that...     »