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Compressor2_CL

 

 

Procedure Compressor2_CL provides a model of a compressor with a specified isentropic or polytropic efficiency.  The model operates both within and outside of vapor dome.

 

Inputs:

h_in:  inlet enthalpy (J/kg, kJ/kg, or Btu/lbm)

P_in:  inlet pressure (bar, atm, Pa, kPa, MPa)

P_out:  outlet pressure (bar, atm, Pa, kPa, MPa)

m_dot:  mass flow rate (kg/s or lb_m/hr)

F$:  fluid string identifier

eta:  if eta>0 then it is interpreted as the isentropic efficiency

 if eta<0 then abs(eta) is interpreted as the polytropic efficiency

 

Outputs:

h_out:  outlet enthalpy (J/kg, kJ/kg, or Btu/lbm)

W_dot:  power (W, kW or Btu/hr)

eta_s:  isentropic efficiency (this is useful if polytropic efficiency is an input)

 

Example: 

$Load Component Library

$UnitSystem SI Mass J K Pa

F$='He'

P_in=1e5 [Pa]

h_in=enthalpy(F$,T=300 [K])

P_out=1e6 [Pa]

m_dot=0.1 [kg/s]

eta= 0.9 [-]

Call compressor2_cl(h_in, P_in, P_out, m_dot, F$, eta: h_out, W_dot, eta_s)

 

{Solution:

h_out = 2.626e6 J/kg

W_dot = 261683 W

eta_s = 0.9}

 

Index