Q3: Steam in the condenser of a power plant is to be condensed at a temperature of 30°C with cooling water from a nearby lake, which enters the tubes of the condenser at 14°C and leaves at 22°C. The surface area of the tubes is 45 m’, and the overall heat transfer coefficient is 2100 W/m² °C. The specific heat of cold water is Cp = 4184 J/kg . Determine the mass flow rate of the cooling water needed and the rate of condensation of the steam in the condenser and NTU.

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