Otto Cycle Heat Rejected Calculator

Otto Cycle Heat Rejected Equation

$$ Q_{in} = m C_v (T_4 - T_1) $$ where:

Q_in = Heat rejected during combustion process (J)

m = Mass of the working fluid (air-fuel mixture) (kg)

C_v = Specific heat at constant volume (J/kg K)

T₄ = Temperature at the end of the expansion stroke (K)

T₁ = Temperature before compression (K)

Calculator

Property to Calculate:

Heat added during combustion process (Q_in):

Mass of the working fluid (m):

Specific heat at constant volume (C_v):

Temperature at the end of the expansion stroke (T₄):

Temperature before compression (T₁):

Equation Assumptions

The working fluid behaves as an ideal gas.
Specific heats remain constant.
Compression and expansion processes are adiabatic.
There is perfect mixing of the air and fuel.