annual_network_cost#

module wntr.metrics.economic

annual_network_cost(wn, tank_cost=None, pipe_cost=None, prv_cost=None, pump_cost=None)[source]#

Compute annual network cost [23].

Use the closest value from the lookup tables to compute annual cost for each component in the network.

Parameters:

  • wn (wntr WaterNetworkModel) – Water network model. The water network model is needed to define tank volume, pipe and valve diameter, and pump power conditions.

  • tank_cost (pandas Series, optional) –

    Annual tank cost indexed by volume (default values below, from [23]).

    Volume (m3)

    Annual Cost ($/yr)

    500

    14020

    1000

    30640

    2000

    61210

    3750

    87460

    5000

    122420

    10000

    174930

  • pipe_cost (pandas Series, optional) –

    Annual pipe cost per pipe length indexed by diameter (default values below, from [23]).

    Diameter (in)

    Diameter (m)

    Annual Cost ($/m/yr)

    4

    0.102

    8.31

    6

    0.152

    10.10

    8

    0.203

    12.10

    10

    0.254

    12.96

    12

    0.305

    15.22

    14

    0.356

    16.62

    16

    0.406

    19.41

    18

    0.457

    22.20

    20

    0.508

    24.66

    24

    0.610

    35.69

    28

    0.711

    40.08

    30

    0.762

    42.60

  • prv_cost (pandas Series, optional) –

    Annual PRV valve cost indexed by diameter (default values below, from [23]).

    Diameter (in)

    Diameter (m)

    Annual Cost ($/m/yr)

    4

    0.102

    323

    6

    0.152

    529

    8

    0.203

    779

    10

    0.254

    1113

    12

    0.305

    1892

    14

    0.356

    2282

    16

    0.406

    4063

    18

    0.457

    4452

    20

    0.508

    4564

    24

    0.610

    5287

    28

    0.711

    6122

    30

    0.762

    6790

  • pump_cost (pd.Series, optional) –

    Annual pump cost indexed by maximum power input to pump (default values below, from [23]). Maximum Power for a HeadPump is computed from the pump curve as follows:

    \[Pmp = g*rho/eff*exp(ln(A/(B*(C+1)))/C)*(A - B*(exp(ln(A/(B*(C+1)))/C))^C)\]

    where \(Pmp\) is the maximum power (W), \(g\) is acceleration due to gravity (9.81 m/s^2), \(rho\) is the density of water (1000 kg/m^3), \(eff\) is the global efficiency (0.75 default), \(A\), \(B\), and \(C\) are the pump curve coefficients.

    Maximum power (W)

    Annual Cost ($/yr)

    11310

    2850

    22620

    3225

    24880

    3307

    31670

    3563

    38000

    3820

    45240

    4133

    49760

    4339

    54280

    4554

    59710

    4823

Return type:

Annual network cost in dollars (float)