ccp-performance 0.2.0

Centrifugal Compressor Performance calculation.

Centrifugal Compressor Performance

ccp is a python library for calculation of centrifugal compressor performance. It is based on the book of [Ludtke04] and uses CoolProp REFPROP for the gas properties calculations.

Online documentation is available at here.

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()