2 MAE 301- Helpful Relations _________________________________________________________________________________ Closed System First Law: net net W Q U − = Δ Boundary work: Electric work: ∫ = 2 1 PdV W b t UI W e Δ = Ideal Gas Relations: M R R RT Pv mRT PV u = = = R k c c c k R k k c v v p p 1 1 1 − = = − = First Law for Steady-Flow Open System: pe ke h m W m Q net net Δ + Δ + Δ = − Quality relations: fg f fg f fg f total g xh h h xu u u xv v v m m x + = + = + = = ; ; Energy Efficiency: total in useful out total in useful out Power Power E E / / / / = = η Polytropic Process Relations: 1 ln
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This note was uploaded on 05/19/2010 for the course MAE 301 taught by Professor Hassan during the Spring '08 term at N.C. State.