1. Determine the specific flow exergy, in Btu/lbmol and Btu/lb, at 440°F, 73.5 lbf/in.2 for (a) nitrogen (N2) and (b) carbon dioxide (CO2), each modeled as an ideal gas, and relative to an exergy reference environment for which T0 5 77°F, p0 5 14.7 lbf/in.2 Ignore the effects of motion and gravity.
2. 7.51 Determine the specific exergy and the specific flow exergy, each in Btu/lb, for steam at 350 lbf/in.2, 700°F, with V 5 120 ft/s and z 5 80 ft. The velocity and elevation are relative to an exergy reference environment for which T0 5 70°F, p0 5 14.7 lbf/in.2, and g 5 32.2 ft/s2.