Situation: Steam produced in a nuclear power plant is condensed using cooling water that enters the condenser at 293K and leaves heated at 313K. The hot water flows at 4104 kg/s to a natural-draft cooling tower, where it is re-cooled to 293K and returned to the condenser. You are to design the natural-draft cooling tower. Physical properties: The tower will operate at 1atm. The available dry air is at 298K with a wet-bulb temperature of 285K. Specialized packing will be used for which Kya is expected to be 1.0kg/m3s if the liquid mass velocity is at least 3.4kg/m2s and the gas mass velocity is at least 2.75kg/m2s. The average heat capacities and heat of vaporization within the operating temperature range are: Requirements - Calculate the minimum airflow rate, in [kg dry air/s]. 27,600 kg/s - Obtain the enthalpy in [kJ/kg] in the exit air stream when the airflow rate of 1.2 times the minimum. 135kJ/kg - Obtain the temperature, in [K] in the exit air stream when the airflow rate of 1.2 times the minimum. 308K - Calculate the absolute humidity in the exit air stream when the airflow rate of 1.2 times the minimum. 0.039 - Calculate the cross-sectional area of the column, in [m2].11,764m2 - Calculate the height of the column, in [m], if NtOG is equal to 6.514.18m Equilibrium Dat Situation: Steam produced in a nuclear power plant is condensed using cooling water that enters the condenser at 293K and leaves heated at 313K. The hot water flows at 4104 kg/s to a natural-draft cooling tower, where it is re-cooled to 293K and returned to the condenser. You are to design the natural-draft cooling tower. Physical properties: The tower will operate at 1atm. The available dry air is at 298K with a wet-bulb temperature of 285K. Specialized packing will be used for which Kya is expected to be 1.0kg/m3s if the liquid mass velocity is at least 3.4kg/m2s and the gas mass velocity is at least 2.75kg/m2s. The average heat capacities and heat of vaporization within the operating temperature range are: Requirements - Calculate the minimum airflow rate, in [kg dry air/s]. 27,600 kg/s - Obtain the enthalpy in [kJ/kg] in the exit air stream when the airflow rate of 1.2 times the minimum. 135kJ/kg - Obtain the temperature, in [K] in the exit air stream when the airflow rate of 1.2 times the minimum. 308K - Calculate the absolute humidity in the exit air stream when the airflow rate of 1.2 times the minimum. 0.039 - Calculate the cross-sectional area of the column, in [m2].11,764m2 - Calculate the height of the column, in [m], if NtOG is equal to 6.514.18m Equilibrium Dat
