Assignment:
Q1. For a thermodynamic process involving a perfect gas, the intial and final temperatures are related by:
T1 exp(Δs/cp) = T2
where cp is the specific heat capacity of the gas, s is the change of entropy and T1 and T2 are the initial and final temperatures of the process. Determine the value of Δs(units - kJ/ kg) if T1 = 320K , T2 = 450K and cp = 1.005 kJ / kgK.
Q2. The overall efficiency of a gas turbine can be calculated from the formula
nt = 1 - εn0 / 1- ε
where np is the small stage efficiency and ε = (1 - y) /γ, where r is the expansion pressure ratio and γ is the ratio of the specific heats. Given that the overall efficiency nt is 76%, r = 1.333 , calculate the value of the small stage efficiency np .
Provide complete and step by step solution for the question and show calculations and use formulas.