| Summary: | 碩士 === 國立成功大學 === 機械工程學系碩士在職專班 === 103 === The cooling tower is a special heat exchanger to cool the hot water, through direct contact with the water and air and the use of evaporation and heat convection/conduction. Its purpose is to cool the hot water generated in the system or process, and the hot water becomes cold, and again circulating into the system or process.
In the present study establishes three-dimensional numerical model of the cooling tower and the use of small wind tunnel tests to measure the amount of fill and eliminator the inertial resistance factor and viscous inertial resistance factor. These data are used in the CFD software simulation to explore the performance (velocity uniformity) of the cooling tower.
There are two different boundary conditions used in this study, given pressure drop and mass flow rate. The effects of different air inlet height (A=2500, 5980, 6580, 7180mm), different plenum height (B =328, 1028, 2028 3728mm) and different air inlet guide (L =0, 300, 600, 1500mm) are examined on the flow field and pressure distribution. This thesis would be useful for the future cooling towers design.
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