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NUMERICAL INVESTIGATION OF HEAT AND MASS TRANSFER INSIDE A WET COOLING TOWER (CROSBI ID 254943)

Prilog u časopisu | izvorni znanstveni rad

Blecich, Paolo ; Senčić, Tomislav ; Wolf, Igor ; Bonefačić, Igor NUMERICAL INVESTIGATION OF HEAT AND MASS TRANSFER INSIDE A WET COOLING TOWER // Tehnički glasnik, 12 (2018), 3; 131-138. doi: 10.31803/tg-20171017145907

Podaci o odgovornosti

Blecich, Paolo ; Senčić, Tomislav ; Wolf, Igor ; Bonefačić, Igor

engleski

NUMERICAL INVESTIGATION OF HEAT AND MASS TRANSFER INSIDE A WET COOLING TOWER

This paper presents a numerical investigation of heat and mass transfer inside a wet cooling tower with forced air draft, which find application in energy process industries and oil refineries. The mathematical model consists of mass, momentum and energy conservation equations, water droplet trajectories and their interaction with the gas phase, the computational domain and boundary conditions. Numerical distributions of air velocity, air temperatures, water vapor fractions and evaporation rates are shown and discussed. The wet cooling tower achieves an efficiency of around 80%, which can be improved by optimizing the value of the water droplet size, nozzle spray angle and water-to-air flow rate ratio. The water droplet size has a dominant effect on the cooling tower efficiency, whereas small droplets improve the efficiency up to 10%. On the other hand, the spray angle and the water-to-air ratio lead to slight improvements, about 2-3% in the best case.

cooling tower ; forced air draft ; latent heat transfer ; numerical modeling ; water evaporation

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Podaci o izdanju

12 (3)

2018.

131-138

objavljeno

1846-6168

1848-5588

10.31803/tg-20171017145907

Povezanost rada

Strojarstvo, Temeljne tehničke znanosti

Poveznice