1. As a design engineer for a large heat exchanger manufacturing company, you are to provide a quick estimate on the size of a shell-and-tube heat exchanger. The heat exchanger will be used to condense steam (1 atm) within the shell by raising the temperature liquid water from 20 to 90°C within the tubes. It is desired to transfer 600kW from the steam to the liquid water. The diameter of the tubes is 1 cm and the velocity of the liquid water is not to exceed 3 m/s. Determine: a) the mass flow rate of the liquid water, b) the minimum number of tubes required in this one-shell and two-tube-pass heat exchanger, c) the steam condensation rate, and d) the tube length required to transfer 600kW, if the tubes are thin-walled and minimum number of tubes are considered.