... for Laminar and Turbulent flow * Experimental equipments: * Two vertical glass tubes measuring:> 4.1cm internal diameter, 74cm high> 1.4cm internal diameter , 64cm high * Rota meters for measuring air flow * Wet and dry bulb thermometers for measuring temperatures * Psychometric chart , for measuring humidity * Stop clock Key results: Key results: LAMINAR FLOW (Re<2000) kg.d (kgs-1m-1) Log (kg×d) Reynolds number, Re Log Re 1.7x10-3 -4.16 148.79 2.17 4.8x10-3 -3.71 370.54 2.57 5.3x10-3 -3.66 1479.97 3.17 6.7x10-3 -3.56 2596.66 3.41 TURBULENT FLOW (Re>2000) kg.d (kgs-1m-1) Log (kg×d) Reynolds number, Re Log Re 3.8x10-5 -4.4 433.42 2.64 1.03x10-4 -3.99 1061.77 3.03 2.9x10-4 -3.54 4240.49 3.63 2.8x10-4 -3.55 7438.35 3.87 Slope, N= 0.41 for laminar and for turbulent it was linear graph The above tabulated value are the key data obtained from the experiment. Main Conclusion From the experimental results and calculations, the following conclusions can be made: * In the laminar column , as the air flow rate increases, the mass transfer coefficient also increases while in turbulent column , as flow rate increases, the mass transfer coefficient was not stable . * For a given air flow in a wetted wall column with a smaller diameter, more turbulent flow occur compared ...

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