Thermodynamics property calculation

AI Thread Summary
The discussion centers on calculating thermodynamic properties of air at 227 Celsius and 1000 kPa, specifically internal energy, quality, enthalpy, and specific volume. It emphasizes that two independent properties define the state, but participants express confusion over the lack of formulas to relate these properties. The suggestion is made to assume air behaves as an ideal gas and use relevant ideal gas equations, with references to polynomial fitting for obtaining necessary formulas. Additionally, there is a reminder to check the posting dates before contributing to older threads. The conversation highlights the challenges in applying theoretical concepts to practical calculations in thermodynamics.
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Homework Statement



Air has a temperature of 227 Celsius and a pressure of 1000 kPa. Determine the internal energy, quality, enthalpy, and specific volume if it exists.

Homework Equations



A state is defined by two properties. All other properties can be derived from two independent properties.

The Attempt at a Solution



Ok so in theory two independent properties define the state, so I should be able to do this problem. Problem is there are no formulas relating them...I am totally lost right now. I only know the concept, but have no tools. Anyone help me pls.
 
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If I had to guess, I think you are allowed to assume the air is an ideal gas, and then use the formulas for an ideal gas to figure out what you need to.
 
you can get the formulas by polynomial fitting. The orginal data can be calculated from www.eThermo.us
 
The OP was looking for an answer 2 years ago. He either found it by now or ...

Please check the dates in the thread before posting (or necro posting) to a thread which is months, if not years, old.
 

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