- #1

wrenchtime

- 9

- 0

be h = u + (0.185)Pv (Btu/lbm)

where units for h and u are (Btu/lbm)

P (psia) and v (ft*3/lbm)

On a Temperature and specific entropy graph

h... represents the area under the curve at a constant specific pressure

u... represents the area under the curve at a constant specific volume

(0.185)Pv... represents the area between the h and u curves

I have tested the equation on several medium and it seems to work?