Saturated process steam (1 atm, t 100'c, he 2,257 kj/kg) is condensed in a one-shell one-tube pass heat exchanger. a liquid stream (p 998 kg/m', cp = 4,181 j/kg-k, μ = 959 x 10" ns/m, k 0.606 w/m-k) enters the thin-walled copper tubes of 14 mm diameter and 3 m length at 15°c with an average velocity of 2 m/s. if the convective heat transfer coefficient for condensation outside the tubes is 21,800 w/m'k, determine: a) (20 points) the number of tubes n required to condense 5 kg of steam per second. b) (5 points) the outlet temperature, ts of the liquid stream. c) (5 points) the condensation rate, that can be achieved with this heat exchanger using the same liquid stream flowrate and inlet temperature.