Air enters a compressor operating at steady state at 1.05 bar, 300 k, with a volumetric flow rate of "84" m3/min and exits at 12 bar, 400 k. heat transfer occurs at a rate of 14 kw from the compressor to its surroundings. assuming the ideal gas model for air and neglecting kinetic and potential energy effects, determine the power input, in kw.

10 kg of co2 is initially contained at 400 kpa and 300 k. the gas constant for carbon dioxide is 189 j/lkg k) and has a specific heat ratio, k, of 1.289. isentropic expansion then occurs until the pressure is 200 kpa. a) determine the initial volume of co2 in m. b) determine the final temperature in k. c) determine the work done by the system during the expansion kl.