MAE 204 Lecture Notes - Lecture 9: Zrtp, Gas Constant, Polytropic Process
16 Oct 2016
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Document Summary
An equation of state is an equation relating p-v-t to each other. The nexact equation of state is not known for any materials. For most gases at many state, the equation. Pv = nr- t is a pretty good approximation. P=pressure v= volume n = number of moles t = temperature. R- = universal cta constant = 8. 314 j/mol divide by n to get pj = r- t. V- = molar specific volume = m^3 / mole divide by the molar mass m ( how many kg/mol) you get pv = kt. R = r- / m = specific gas constant. R is in the property tables (a- 1 in cengal) Hydrogent: r = 4. 1261 kt/kgk anything described as an ideal gas must obey pv = rt. Pv = rt must hold for any process on an ideal gas. Process 1 to 2 on an ideal gas.
