Other examples for interests Compressor Example Water Pumping Example Given:Hydrogen compressor, Given:D1=10 cm,D2=15 cm; Inlet:T1=320K,P1=0.2MPa,=100m/s,D1=0.1m T2=T1=Tatm=20C Outlet:T2=520 K,P2=1.2 MPa,D2=0.1 m P2=P1=Patm=101.3 Pa V2=15 L/s 2 Negligible heat loss ÷V=15L/s System Wsh 65m Pump Water 1 Find:(1)mass flow rate in kg/min,(2)shaft power Find:pump power required Assumptions:(1)SSSF,(2)Ape =0,(3)adiabatic, Assumptions:1)SSSF,2)adiabatic,3)water (4)Hz is ideal gas is incompressible 上游充通大 March 28,2019 9 SHANGHAI JIAO TONG UNIVERSITYMarch 28, 2019 9 Other examples for interests Compressor Example Given: Hydrogen compressor, Inlet: T1 = 320 K, P1 =0.2 MPa, V1=100 m/s, D1 = 0.1 m Outlet: T2 = 520 K, P2 =1.2 MPa, D2 = 0.1 m Negligible heat loss 2 System : Wsh 1 Find: (1) mass flow rate in kg/min, (2) shaft power Assumptions: (1) SSSF, (2) ∆pe =0, (3) adiabatic, (4) H2 is ideal gas Water Pumping Example 2 CV 65 m Pump V  15 L/s 1 Water Find: pump power required Assumptions: 1) SSSF, 2) adiabatic, 3) water is incompressible Given: D1 = 10 cm, D2 = 15 cm; T2 = T1 = Tatm = 20oC P2 = P1 = Patm = 101.3 Pa V2 = 15 L/s