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(Q2) In Haber's process, nitrogen and hydrogen are the reactants for the synthesis of ammonia. The operating conditions required in the reactor are 200400C and 240260atm. Design engineers have two approaches to take N2H2 mixture to elevated pressures, (i) using a single-stage polytropic compressor, (ii) using a four-stage polytropic compressor (with intercoolers) with the same compression ratio of 4. The polytropic index is 1.282 , and compressor mechanical efficiency is 0.8 . The inlet flow rate is 2.5Sm3/s. The feed is at 1.5 atm and 15C. Polytropic efficiency will take care of the heat losses involved in the process. Consider polytropic efficiency as 0.95 (a) Find the exit temperature and power requirement for compressing the feed mixture to 256 atm using a single-stage polytropic compressor and compare it with isothermal compression. (b) Find the exit temperature and power requirement of each stage for compressing the feed mixture to 256 atm using a four-stage polytropic compressor (with intercoolers). (c) Comment on the viable design that can be recommended based on your calculations