Engineering Equation Solver Ees | Cengel Thermo Iso

P1 = 200 [kPa] P2 = P1 T1 = 25 [C] m = 1 [kg] Fluid$ = 'R134a' v1 = volume(Fluid$, P=P1, T=T1) u1 = intEnergy(Fluid$, P=P1, T=T1) h1 = enthalpy(Fluid$, P=P1, T=T1)

v2 = v1 "Final pressure given" P2 = 500 [kPa] T2 = temperature(Fluid$, P=P2, v=v2) u2 = intEnergy(Fluid$, P=P2, v=v2) Engineering Equation Solver EES Cengel Thermo Iso

Q_in = m*(u2 - u1) "W=0" Cengel use: Often for ideal gas (( Pv = RT )) or phase change (but constant T in two-phase region implies constant P). P1 = 200 [kPa] P2 = P1 T1

"Actual (given efficiency η=0.85)" η = 0.85 η = (h1 - h2a)/(h1 - h2s) h2a = h1 - η*(h1 - h2s) W_a = h1 - h2a EES replaces table lookup: T=T1) u1 = intEnergy(Fluid$