Problem 2 (30 points) Use a computer program of your choice to solve this problem. Programming in .xlsx will also work. You are asked to plot graphs of thermal efficiency versus specific power with varying cycle pressure ratio from 2 to maximum possible for CBE CBEX and CICBEX cycles. Your solution should show the equations you used, and the graphs. Assume CP=1100 J/kg/K and R=287 J/kg/K T_01=298 K and P_01=101.3 kPa Compressor and turbine polytropic efficiencies, stagnation to stagnation, 0.90 Heat exchanger effectiveness 0.90 (for CBEX and CICBEX) Intercooler effectiveness 0.90 (for CICBEX)

(a) Three graphs are needed so far for CBE, CBEX, CICBEX

(b) Note optimum pressure ratio for maximum thermal efficiency and for maximum specific power for CBE, for CBEX, and for CICBEX.

(c) Produce a fourth graph for CBEX only, for varying heat exchanger effectiveness 0.97, 0.95, 0.90. 0.80, 0.70, 0.60, 0.50. This is one more graph with 7 lines. Note the maximum possible pressure ratio at the end of each line.