[TRNSYS-users] CANT FIND TRANSFER FUNCTION COEFFICIENTS

[JUAN FRANCISCO BELMONTE TOLEDO]

Hello All.

i´ve got the following error when i´m doing a building parametric study... any of the combinations of capacities, thicknesses, or conductivities i´m changing..  doesn´t like the program very much.
  
Any advice????   

         ---------- WALL TYPE C21                 ----------
       THERMAL CONDUCTANCE, U=     2.13365 kJ/h m2K; U-Wert=     0.53843 W/m2K
              (incl. alpha_i=7.7 W/m^2 K and alpha_o=25 W/m^2 K)
                        TRANSFERFUNCTION COEFFICIENTS
   K            A              B              C              D
   0       1.1040243E+01    1.5341544E+00    1.3444721E+01    1.0000000E+00
   1      -8.9084733E+00    5.9894459E-01   -1.1311898E+01   -1.7569007E-04
   2       1.5031158E-03    1.7343835E-04    4.4981489E-04
  SUM      2.1332724E+00    2.1332724E+00    2.1332724E+00    9.9982431E-01
 UNABLE TO FIND A ROOT AFTER INDICATION THAT A ROOT EXISTED
 
 CHECK THE WALL TYPE AFTER THE LAST CALCULATED WALL
 OFTEN THE WALL CAPACITY IS TO SMALL TO CALCULATE A TRANSFER FUNCTION !
 
 CHECK ALSO YOUR TIMEBASE !

Juan Francisco Belmonte Toledo
Universidad de Castilla-La Mancha
Juanf.belmonte at uclm.es
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