The condenser of a large steam power plant is a heat exchanger in which steam is condensed to liquid water. Assume the condenser to be a shell-and-tube heat exchanger consisting of a single shell and 30,000 tubes, each executing two passes. The tubes are of thin wall construction with D = 25 mm, and steam condenses on their outer surface with an associated convection coefficient of ho=11,000 W/(m2.K). The desired heat transfer rate by the heat exchanger is q = 2*10 W, and this is accomplished by passing cooling water through the tubes at a rate of 2*104 kg/s (the flow rate per tube is therefore 1 kg/s). The water enters at 20C, while the steam condenses at 50C. Water data: cp=4179 J/(kg.K); viscosity = 0.9*10- Pa.s; k = 0.6 W/(m.K); Pr = *cp/k; Steam q=2x 10W Tube (2 passes) Thi 1.0 0.8 Water 0.6 mc w 0.4 -Tco mh Tho For all heat exchangers with Cr = 0, NTU = -ln(1-) 0.2 Carl Cox = 0 0.25 0.50 0,75 1.00 1 3 4 5 NTU (a) Determine the outlet temperature of the cooling water emerging from the condenser. (b) Determine Red, Pr, NuD, and the convective heat transfer coefficient (tubeside) hi. (c) Determine the universal heat transfer coefficient U. (d) Determine qmax, the effectiveness &, and the number of transfer unit NTU. (e) Determine the required tube length L per pass [m].