Engineering, 29.03.2021 16:10 tporter00
H2O enters a conical nozzle, operates at a steady state, at 2 MPa, 300 oC, with the inlet velocity 30 m/s and the mass flow rate is 50 kg/s. The exit pressure and temperature are 0.6 MPa and 160 oC, respectively. Please determine the inlet radius as well as the exit flow velocity. Hint: While the effect of heat transfer can be neglected, the change of the kinetic energy should be accounted for.
Answers: 2
![\dot m \cdot \left[\left(h_{in}+\frac{v_{in}^{2}}{2} \right)-\left(h_{out}+\frac{v_{out}^{2}}{2} \right)\right]= 0](/tpl/images/1227/2304/03413.png)
(1)
- Mass flow, in kilograms per second.
, 
- Specific enthalpies at inlet and outlet, in kilojoules per second.
- Flow speed at inlet and outlet, in meters per second.
is the specific volume of water at inlet, in cubic meters per kilogram. 
, 
, then the flow speed at outlet is:
(2)
), in meters, by this expression:
(3)
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H2O enters a conical nozzle, operates at a steady state, at 2 MPa, 300 oC, with the inlet velocity 3...
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