Dany Iman Santoso, I Wayan Susila, Dewanto, Yunus, Akhmad Hafizh Ainur Rasyid, Rachmad Syarifudin Hidayatullah
Water capacity is the most crucial thing in the evaporation process in the cooling tower. Therefore, at the initial setting, the manufacturer limited the load or the point of equilibrium so that no drifting or mass transfer occurs during the process. Mass transfer means that the cooling tower was experiencing a water deficit. This experiment used a mechanical draft wet cooling tower (MDWCT) with varying water capacities between 0.5-18 litters per minute (Lpm). This study changed air capacity also through variations in fan rotation between 300-1500 rpm. In the previous calculation, the value of 6 Lpm was obtained as the equilibrium capacity. Mathematical modeling based on Reynolds Averaged Navier-Stokes (RANS) was applied to simulate the interactions. It presented heat and mass transfer by mass and temperature charts, respectively, and their reductions. For low capacity (0.5 Lpm), water undergoes mass transfer, as proven by the mass flow reduction graph value of 10-8 kg/(m.s). Meanwhile, for high capacity (18 Lpm), water experiences heat transfer as evidenced by the temperature difference graph value of 11°C. © 2021 IEEE.
Universitas Negeri Surabaya, Department of Mechanical Engineering, Surabaya, Indonesia
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