Feeding Column Type 206
by International Energy Agency

	This type represents a feeding column that was created to avoid 
a large number of units.  A feeding column is a number of pipes that emit
in different rooms at different temperatures.  The supply mass flow rate 
is an input.  The sum of the mass flow rate through the radiators is deduced
from this supply mass flow rate and the rest go through a by-pass.  The 
return part of the column is also simulated.  The pipes model is the as the
Type 70 Free Pipe, a subroutine included in the Type 70 file is called; so
even if the Type 70 (Component Number 1005) is not used when it must be 
linked.  The number of pipe elements is limited to 8 but may be increased.

	dM1 = SUM(dMrad)
        dMbp = dM0 - dM1
        dM2 = dM1 - dM rad1
         ........
        return
        dM1' = dM2' + dMrad1
                 tex2'*dM2' + trad1*dMrad1
        tsul' = ---------------------------
                      dM2' + dMrad1
        .........

Ref: IEA ANNEX17: BEMS  Synthesis Report  University of Stuttgart
	June 27, 1991    AN17-910627-01