Steady flow energy equation, Civil Engineering

If there is steady flow, nothing changes with time. 

1. The properties of the fluid at entry and exit are constant.

2.  The properties of the fluid at any point in the control volume are constant.

3.  dm1/dt=dm2/dt and both are constant.

4. Q and Wx are constant. 

Ecf = Eci and m1 = m2 = m 

2356_steady flow energy equation.png

This equation can also be written as a rate equation 

1440_steady flow energy equation1.png

where  68_steady flow energy equation.png  is the mass flow rate [kg/s] and 852_steady flow energy equation2.png and 1152_steady flow energy equation3.png are the heat transfer rate and rate of doing work [kW]. 

Posted Date: 8/27/2012 9:26:51 AM | Location : United States







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