A list of common unit operations follows: (a) single-pipe heat exchanger, (b) double-pipe heat exchanger, (c) pumps, (d) gas compressors (e) gas turbines. Develop a simplified form of the general steady-state energy balance appropriate for each operation. Carefully state and justify any assumptions you make. ( 5 points) Question 2 Water flows through a horizontal coil heated from the outside by high-temperature flue gases. As it passes through the coil, thite water changes state from liquid at 200kPa and 80C to vapor at 100kPa and 125C. Its entering velocity is 3ms1. and its exit velocity is 200ms1. Determine the heat transferred through the coil per unit mass of water. Enthalpies of the inlet and outlet streams are: Inlet: 334.9kJ. kg1; Outlet: 2726.5kJkg1