Waheed Sh. Mohammad; Jalal M. Jalil
Abstract
Theoretical and experimental studies were conducted on forced draftwater cooling tower. In such towers, the heat and mass transfer take placefrom the hot water to the bulk air, which ...
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Theoretical and experimental studies were conducted on forced draftwater cooling tower. In such towers, the heat and mass transfer take placefrom the hot water to the bulk air, which passes through the tower. Thetheoretical study includes two parts, the first part describes the numericalsolution for the water cooling tower governing equations, a two dimension airmomentum equation (Navier-Stocks equations) and air enthalpy equation(energy equation), moisture content and water enthalpy equation. The effectof turbulence was simulated using the k-ε model. The packing-air resistance isdescribed and added to the air momentum equation in y-direction only. Thesecond part highlights the use of three different packing types. This includesthe use of a ceramic packing in two different heights (0.66, 0.48m) in additionto an aluminum packing. A simple comparison between all the above types ofpacking behavior is conducted. The experimental study was conducted usingHilton water cooling tower, which is a counter flow type. The variation inmany variables, which affect the tower efficiency, are described in this part ofthe research including variation heating loads, entering water mass flow ratesand incoming air volume flow rates. The flow field velocity vector for airthrough the tower is plotted, and an accurate behavior of both air and waterproperties was found.
