工程经济分析中的基本要素 设备投资举例 Unit Investment cost (S/year) Large package boiler 4954F0.77fP2 F:steam flowrate (t/h) fp2=1.3794-0.5438P+0.1879P2 P:Pressure (MPa) 495,384+13,861F Heat Recovery Boiler 941Ffg0.75 Ffg:flue gas flowrate (t/h) 6996+211.5Ffg Steam turbine 2237Wst0.41 Wst:power (kW) Gas turbine 952Wgt0.76 Wgt:power (kW) Electric generator 176Weg0.49 Weg:power (kW) Deaerator 904F86 FB:BFW flowrate (t/h)设备投资举例 5 5 一、工程经济分析中的基本要素