Power Cycle Analysis Online Calculator



Carnot Cycle

Input Values:

Q-Supply Temperature [K]
Q-Reject Temperature [K]

Output Values:

Thermal Efficiency [%]
Heat Rate [Btu/kWhr]


Brayton Cycle (Power)

Input Values:

Compressor Inlet
Temperature [K]

Compressor Inlet
Pressure [atm]

Turbine Inlet
Temperature [K]

Turbine Inlet
Pressure [atm]

Working Fluid Mass
Flow Rate [kg/s]

Fuel HHV [Btu/lbm]
Specific Heat [J/kg*K]
Kappa [/]

Output Values:

Power Output [kW]
Cycle Efficiency [%]
Fuel Mass Flow Rate [kg/s]
Heat Rate [Btu/kWhr]


Brayton Cycle (Propulsion)

Input Values:

Compressor Inlet
Temperature [K]

Compressor Inlet
Pressure [atm]

Turbine Inlet
Temperature [K]

Turbine Inlet
Pressure [atm]

Working Fluid Mass
Flow Rate [kg/s]

Fuel HHV [Btu/lbm]
Specific Heat [J/kg*K]
Kappa [/]

Output Values:

Fuel Mass Flow Rate [kg/s]
Thrust [N]


Otto Cycle

Input Values:

Ambient Temperature [K]
Ambient Pressure [atm]
Compression Ratio [/]
Combustion Temperature [K]
Gas Constant [J/kg*K]
Specific Heat [J/kg*K]
Kappa [/]

Output Values:

Compression Temperature [K]
Compression Pressure [atm]
Combustion Pressure [atm]
Exhaust Temperature [K]
Exhaust Pressure [atm]
Cycle Efficiency [%]
Heat Rate [Btu/kWhr]


Diesel Cycle

Input Values:

Ambient Temperature [K]
Ambient Pressure [atm]
Compression Ratio [/]
Cut-Off Ratio [/]
Gas Constant [J/kg*K]
Specific Heat [J/kg*K]
Kappa [/]

Output Values:

Compression Temperature [K]
Compression Pressure [atm]
Combustion Temperature [K]
Combustion Pressure [atm]
Exhaust Temperature [K]
Exhaust Pressure [atm]
Cycle Efficiency [%]
Heat Rate [Btu/kWhr]


Magnetohydrodynamics (MHD)

Input Values:

Inlet Stagnation
Temperature [K]

Inlet Stagnation
Pressure [atm]

Inlet Velocity [m/s]
Conductivity [mho/m]
Magnetic Field Strength [T]
Loading Parameter [/]
Channel Length [m]
Kappa [/]
Specific Heat [J/kg*K]
Gas Constant [J/kg*K]

Output Values:

Inlet Static Temperature [K]
Inlet Static Pressure [atm]
Inlet Mach Number [/]
Induced Voltage Field [V/m]
Current Density [A/m^2]
Outlet Stagnation
Temperature [K]

Outlet Stagnation
Pressure [atm]

Outlet Static Temperature [K]
Outlet Static Pressure [atm]
Outlet Velocity [m/s]
Outlet Mach Number [/]
Specific Work Output [kJ/kg]
Enthalpy Extraction [%]


Gas

Gas

Kappa
[/]

Gas Constant
[J/kg*K]

Specific Heat
[J/kg*K]

Air

 

1.4

286.7

1,004

Ammonia

NH3

1.3

488.2

2,092

Argon

Ar

1.67

208.1

519

Carbon Dioxide

CO2

1.28

188.9

845

Carbon Monoxide

CO

1.4

296.8

1,042

Helium

He

1.66

2,078.5

5,200

Hydrogen

H2

1.4

4,124

14,350

Methane

CH4

1.32

518.2

2,223

Nitrogen

N2

1.4

296.9

1,038

Oxygen

O2

1.4

259.8

916

Water Vapor

H2O

1.33

188.5

1,690


Fuel

HHV [Btu/lbm]

Hydrogen

60,000

Natural Gas

20,000 through 24,000

Oil

18,000 through 21,000

Carbon

14,000

Coal

8,000  through  12,000

Wood

6,000


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