Question

Tb'b 1000 K 6 2. Tt.b - 750 K 3 Qb@1400 Tc,b-610 K т,b = 800 K mdot 507.09 507.09 603.02 507.09796.91 507.09 507.09 861.54 507.09605.12 507.09 507.09 P (bar 1.013300.19 8.611 610.173 8.267818.69 8.0191419.76 1.075 1.032612.25 8.611 1.075 819.17 1.70203 2.4165 2.8006 3.2916 2.8 2.4165 2.31621 2.71490 300 1.70203 1.80231 2.19811 2.69785 2.78295 2.41117 1.70203 2.697854 2 3 1320 890.3 549 798 553.6 2s 6s b 354796.6 kW

Prove that Qb = 354796.6kW. Show all work.

Other information that may be relevant: Net work= 113MW, Turbine has an isentropic efficiency of 88%, Compressor has an isentropic efficiency of 83%, Qin at the compressor is 2368 kW, The regenerative heat exchanger only transfers 75 % of the heat due to heat losses to the environment, System has an efficiency of 31.6%.

Answer 1

here you have given wrong data. Qb= 304796.6 kw is the right answer not the 354796.6

here is how,

from the figure and table we can say that Qb= m(h5-h3)

Qb=507.09(1419.76-818.69) kw

Qb=304796.6 kw