Fan1_CL

Fan1_CL

Fan1_CL provides a model of a vane axial fan that is based on curves for dimensionless pressure rise (DP/(rho*D^2*N^2)) as a function of dimensionless volumetric flow rate (V_dot/(D^3*N) and dimensionless power (W_dot/(rho*D^5*N^3)). These curves were generated by collapsing performance data from several manufacturers and models.

Inputs:
F$: fluid string identifier
m_dot: mass flow rate (kg/s)
T_in: inlet temperature (K, C, F, or R)
P_in: inlet pressure (bar, atm, Pa, kPa, or MPa)
N: rotational speed (rev/s)
D: blade diameter (m or ft)

Outputs:
P_out: outlet pressure (bar, atm, Pa, kPa, or MPa)
W_dot: power (W, kW, or Btu)
T_out: outlet temperature (K, C, F, or R)
eta: efficiency

Example:

$UnitSystem SI Mass J K Pa
F$='Air'
V_dot=10000 [cfm]*convert(cfm,m^3/s)
T_in=300 [K]
P_in=101325 [Pa]
rho=Density(Air, P=P_in,T=T_in)
m_dot=V_dot*rho
N=3500 [rev/min]*convert(rev/min, rev/s)
D=21.38 [inch]*convert(inch,m)
Call Fan1_CL(F$, m_dot, T_in, P_in, N, D: P_out, W_dot, T_out, eta)
DP=P_out-P_in

{Solution
W_dot = 5554 [W] or 7.448 [hp]
DP = 851.5 [Pa] or 3.419 [in H2O]
eta = 0.724}