Refrprop Project Part $2$

Submit the following files:

$1-$ A pdf file of your manual calculations,

$2-$ The Excel file,

$3-$ A pdf file with the values obtained in part $1$a to $f,$ and the graphs of part $2.$

Brayton Cycle: Air enters the compressor of a Brayton cycle at $85$ kPa and $10C.$ The compressor pressure ratio is $6$ ; and the maximum cycle temperature is $1100C.$ The mass flow rate of the air is $100k\frac{g}{s}.$ Assume the compressor is isentropic and the turbine has an efficiency of $90\%.$

Part $1$: Solve this part manually, then using Excel$+$Refprop.

Determine:

a$)$ the thermal efficiency of the cycle,

b$)$ the power of the turbine,

c$)$ the flow exergy at the inlet of the turbine in $k\frac{J}{k}g,$

d$)$ the flow exergy at the exit of the turbine in $k\frac{J}{k}g,$

e$)$ the reversible power of the turbine,

f$)$ the rate of exergy destroyed in the turbine.

Part $2$: Change the efficiency of the turbine from $70\%$ to $100\%($use $3$ efficiencies between these limits$),$ obtain the exergy destroyed in the turbine for each of these efficiencies and plot the changes of the exergy destroyed in the turbine $($ Y $-$axis$)$ as a function of the turbine efficiency $($ X $-$axis$).$