If given the internal energy and temperature of a system we find out that the system...
If given the internal energy and temperature of a system we find out that the system is a superheated vapor, can we find the specific volume of it?
Homework Answers
The state of a system can be described by two independent thermodynamic properties. A thermodynamic property is any property that can be measured. In this problem, we have 2 thermodynamic properties: the internal energy and the temperature. However the internal energy is not independent of the temperature and pressure of the system in the superheated region.
To find the specific volume, we need the Pressure of the system along with the temperature. With the currently given data of internal energy and temperature we would not be able to determine the specific volume of the the system.
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If given the internal energy and temperature of a system we find
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Water vapor initially at 240 °C, 1.0 MPa expands in a piston-cylinder assembly isothermally and without internal irreversibilities to a final pressure of 0.1 MPa. Evaluate the (a)work done, in kJ/kg, (b) the change of entropy,, in kJ/kg - K and (c) the change of internal energy, in kJ/kg. Assume the system can be treated as a Van der Waals model.. [Given: the specific volume of the water vapor can be determined from the superheated...
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Use
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