The power required by the compressor in kW/kg of gas flow rate is

Question

Statement for Linked Answer Q1& Q 2

In a simple Brayton cycle, the pressure ratio is 8 and temperatures at the entrance of compressor and turbine are 300 K and 1400 K, respectively. Both compressor and gas turbine have isentropic efficiencies equal to 0.8. for the gas, assume a constant value of C_p (specific heat at constant pressure) equal to 1 kJ/kgK and ratio of specific heats as 1.4. Neglect changes in kinetic and potential energies.

 

1. The power required by the compressor in kW/kg of gas flow rate is                                                                                                   

      (a) 194.7                                                             (b) 243.4

      (c) 304.3                                                             (d) 378.5

 

   2 .  The thermal efficiency of the cycle in percentage (%) is                                                                                                          

      (a) 24.8                                                               (b) 38.6

      (c) 44.8                                                               (d) 53.1