SBA Invent Logo

Thermodynamics: Control Volumes

Control Volumes

Unlike closed systems, control volumes can have fluid flowing through them. This is an additional energy that needs to be considered. To consider the energy of the fluid stream you would need to know what the mass flow rate of the fluid is. To calculate the mass flow rate you would use equation 1.

Mass Flow rate equation (1)

ρ = density

A = cross-sectional area

v = velocity


Once you know what the mass flow rate you can calculate the energy of the fluid stream over time. In other words you are calculating the power of the fluid stream. Refer to equation 2.

Power equation due to mass flow rate (2)

If you found this information helpful please donate to show your support.


Feedback and Recommendations