2011 ذ ҽϴ. غ ̵ .
2011 ù Specific Heat Ratio(k) Դϴ. CompressorĴ з ϴµ ߿ Ҵ Efficiency kԴϴ. Efficiency ̷δ ġ̹Ƿ Խϴ. , ݱ k Ethylene 100% Compressor 꿡 ǹ Ͽϴ.
) Ethylene(C2H4) 100% Feed Reciprocating Compressor P=18 -> 60 kg/cm2g ,
T1(inlet)= -30, =6000 kg/h, ̶ T2 ϰ մϴ. (Isentropic Efficiency=64.7% )
1) T2 ϱ kԴϴ. ڷῡ ϸ T2=46 ϴ. ؼ Delta T=76 (=30+46) ; Ѵٴ оƷ k 1.188̶ ɴϴ.
2) Simulation tool (Aspen Plus, Hysys )̿Ͽ T2=66 Խϴ. 66 ߱ k=1.243 ̶ ɴϴ. Efficiencyΰ ؼ 100% ٲپ 51.7 ٸ ġ ϴ.
3) Simulation â Isentropic Exponent(k)=1.1948 ̿ϴ. k Ѵٸ T2=48.6 ڷ ġ(46) ϳ Simulation 66 ̰ ϴ. ߸ ϱ?
4) Inlet Discharge stream k simulation 3 ֽϴ.
Cp/(Cp-R)=1.177, 1.138 each Cp/Cv=1.699, 1.197 each Cp/Cv(Ent. Method)=1.003 each
ù° Ideal Gas϶ Դϴ. (ֳĸ Cp+Cv=R ̻ü ) ٸ ΰ ǹ?
5) 4 ǰ Ǵ հ ־ ϴ 66 ʽϴ. (2 66 k=1.243) ü simulation α k ̿ Ͽ ϴ.
ǹ ҽϴ. ߸ϰ ִ̳ » ˷ֽø ϰڽϴ.