P1 = 300 [kPa] T1 = 60 [C] m = 0.5 [kg] Fluid$ = 'Water' v1 = volume(Fluid$, P=P1, T=T1) u1 = intEnergy(Fluid$, P=P1, T=T1) s1 = entropy(Fluid$, P=P1, T=T1)
"Steady-flow compressor work" w_comp_in = h2 - h1 "kJ/kg"
"1st law for ideal gas isothermal: Δu=0" Q_in = W_b Most powerful in EES – just set ( s_2 = s_1 ) and EES finds the rest.
EES is case-insensitive but uses ^ for power. 3. Implementing Iso-Processes in EES a) Isobaric (( P = constant )) Cengel rule: ( P_1 = P_2 ), ( Q - W_b = \Delta H ) (for closed system, often ( W_b = P\Delta V )).
P1 = 200 [kPa] P2 = P1 T1 = 25 [C] m = 1 [kg] Fluid$ = 'R134a' v1 = volume(Fluid$, P=P1, T=T1) u1 = intEnergy(Fluid$, P=P1, T=T1) h1 = enthalpy(Fluid$, P=P1, T=T1)
Engineering Equation Solver Ees Cengel Thermo Iso -
P1 = 300 [kPa] T1 = 60 [C] m = 0.5 [kg] Fluid$ = 'Water' v1 = volume(Fluid$, P=P1, T=T1) u1 = intEnergy(Fluid$, P=P1, T=T1) s1 = entropy(Fluid$, P=P1, T=T1)
"Steady-flow compressor work" w_comp_in = h2 - h1 "kJ/kg"
"1st law for ideal gas isothermal: Δu=0" Q_in = W_b Most powerful in EES – just set ( s_2 = s_1 ) and EES finds the rest.
EES is case-insensitive but uses ^ for power. 3. Implementing Iso-Processes in EES a) Isobaric (( P = constant )) Cengel rule: ( P_1 = P_2 ), ( Q - W_b = \Delta H ) (for closed system, often ( W_b = P\Delta V )).
P1 = 200 [kPa] P2 = P1 T1 = 25 [C] m = 1 [kg] Fluid$ = 'R134a' v1 = volume(Fluid$, P=P1, T=T1) u1 = intEnergy(Fluid$, P=P1, T=T1) h1 = enthalpy(Fluid$, P=P1, T=T1)