Steam turbine Calculation, Using Thermo Utilities, MS Excel Add-ins

Superheated steam is supplied at 40 bar and 350 C to a single-stage turbine and the condenser pressure is 0.035 bar.

1-Calculate the output power of the turbine if the mass flow of steam is 2 kg/s and the isentropic efficiency of the turbine is 0.9

2-Calculate the dryness fraction at outlet
Inputs

Units

Inlet Pressure/Admission Data

40

bar

Inlet Temperature/Admission Data

350

C

Outlet Pressure

0,035

bar

Isentropic Efficiency

0,9

.

Mass Flow

2

Kg/s

Outputs

Inlet Enthalpy

3095,08

kJ/kg

Inlet Entropy

6,59

kJ/(kg.K)

Entropy of Isentropic Expansion

1969,79

kJ/(kg.K)

Outlet Enthalpy

2082,32

kJ/kg

Output Power

2025,53

KW

Dryness Fraction at Outlet

0,81

.

 


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