CONTINUOUS_MODEL AirSplit

ABSTRACT "
  n-way split of air stream. Unidirectional flow. No pressure drop.

  Link type: UniAir

  Each outgoing stream may be multiplied by a factor, mult[i], that from
  the inlet's point of view increases the flow into the outgoing stream.
  This is used to represent multiple consumers as a single stream."


EQUATIONS
   SUM i = 1, nOut  mult[i]*MOut[i]  END_SUM  =  M_In;

LINKS
/* type      name           variables ....  */
   UniAir    Inlet          P, POS_IN  M_In, T, X, W;

   FOR i = 1, nOut
     UniAir  Outlet[i]      P, POS_OUT MOut[i], T, X, W
   END_FOR;


VARIABLES
/* Properties of node air */
 Pressure    P           IN  1375        -BIG    BIG  "Node air pressure"
 Temp        T           IN    16    ABS_ZERO    BIG  "Node air temp"
 HumRatio    W           IN     0.01    SMALL    BIG  "Node humidity ratio"
 Fraction_y  X           IN   594           0    BIG  "Node pollutant fraction"

/* Entering air stream */
 MassFlow    M_In        OUT    0.024       0    BIG  "Entering dry air massflow"

/* Outgoing air streams */
 MassFlow    MOut[nOut]  IN     0.024       0    BIG  "Leaving dry air massflow"

MODEL_PARAMETERS
 Int         nOut        SMP    1           1    BIGINT "Number of outlet streams"

PARAMETERS
 Factor      mult[nOut]  S_P    1           0    BIG  "Outlet stream multiplier, see abstract"

END_MODEL