Overview

ccp is a python library for calculation of centrifugal compressor performance. The code uses CoolProp [Bell et al., 2014] and REFPROP [Lemmon et al., 2018] for the gas properties calculations.

import ccp

# ccp uses pint to handle units. Q_ is a pint quantity.
# If a pint quantity is not provided, SI units are assumed.
Q_ = ccp.Q_
ps = Q_(3, 'bar')
Ts = 300

# Define the fluid as a dictionary:
fluid = {
    "CarbonDioxide": 0.8,
    "Nitrogen": 0.2,
}

# Define suction and discharge states:

suc0 = ccp.State(fluid=fluid, p=ps, T=Ts)
disch0 = ccp.State(fluid=fluid, p=Q_(7.255, 'bar'), T=391.1)
disch1 = ccp.State(fluid=fluid, p=Q_(6.754, 'bar'), T=382.1)

# Create performance point(s):

point0 = ccp.Point(
    suc=suc0,
    disch=disch0,
    speed=Q_(7941, 'RPM'),
    flow_m=Q_(34203.6, 'kg/hr'),
    b=0.0285,
    D=0.365,
)
point1 = ccp.Point(
    suc=suc0,
    disch=disch1,
    speed=Q_(7941, 'RPM'),
    flow_m=Q_(36204.8, 'kg/hr'),
    b=0.0285,
    D=0.365,
)

# Create an impeller with those points:

imp = ccp.Impeller([point0, point1])

# Get results from the Impeller with methods such as
imp.head_plot()
imp.disch.T_plot()

You can get more details by reading the Tutorial.

BWQL14

Ian H. Bell, Jorrit Wronski, Sylvain Quoilin, and Vincent Lemort. Pure and pseudo-pure fluid thermophysical property evaluation and the open-source thermophysical property library coolprop. Industrial & Engineering Chemistry Research, 53(6):2498–2508, 2014. URL: http://pubs.acs.org/doi/abs/10.1021/ie4033999, arXiv:http://pubs.acs.org/doi/pdf/10.1021/ie4033999, doi:10.1021/ie4033999.

LaIHBHM18

E. W. Lemmon, and Ian H. Bell, M. L. Huber, and M. O. McLinden. NIST Standard Reference Database 23: Reference Fluid Thermodynamic and Transport Properties-REFPROP, Version 10.0, National Institute of Standards and Technology. 2018. URL: https://www.nist.gov/srd/refprop, doi:http://dx.doi.org/10.18434/T4JS3C.