Re: [EnergyPlus_Support] Strange Sort of Error

[Ali_Ajmi <ajmi70kw@xxxxxxxxxxx>]

Thanks Linda for helping sort out that sort of error. Unfortunitaly, i got new type of errors as appear down hear.
 
   ** Severe  ** View factors not complete. Probably bad surface descriptions in zone="ZONE NORTH".
   **   ~~~   ** Enforced reciprocity has tolerance (ideal is 0.0)=NaN
   **   ~~~   ** Enforced value is not within normal convergence tolerance (<.0001).
   ** Severe  ** View factors not complete. Probably bad surface descriptions in zone="ZONE WEST".
   **   ~~~   ** Enforced reciprocity has tolerance (ideal is 0.0)=NaN
   **   ~~~   ** Enforced value is not within normal convergence tolerance (<.0001).
   ** Severe  ** View factors not complete. Probably bad surface descriptions in zone="ZONE EAST".
   **   ~~~   ** Enforced reciprocity has tolerance (ideal is 0.0)=NaN
   **   ~~~   ** Enforced value is not within normal convergence tolerance (<.0001).
   ** Severe  ** View factors not complete. Probably bad surface descriptions in zone="ZONE SOUTH".
   **   ~~~   ** Enforced reciprocity has tolerance (ideal is 0.0)=NaN
   **   ~~~   ** Enforced value is not within normal convergence tolerance (<.0001).
   **  Fatal  ** Singular matrix in LUdecomposition, window calculations

Regards
Ali

Linda Lawrie <linda@xxxxxxxxxx> wrote:

Your real error is pointed out in an earlier warning:

** Warning ** Both Shaded Construction and Shading Device are specified 
for WindowShadingControl WINSHADINGCONTROL NORTH
** ~~~ ** The Shaded Construction="DBL CLR 3MM/6MM AIR" will be used.
** Warning ** Both Shaded Construction and Shading Device are specified 
for WindowShadingControl WINSHADINGCONTROL WEST
** ~~~ ** The Shaded Construction="DBL CLR 3MM/6MM AIR" will be used.
** Warning ** Both Shaded Construction and Shading Device are specified 
for WindowShadingControl WINSHADINGCONTROL EAST
** ~~~ ** The Shaded Construction="DBL CLR 3MM/6MM AIR" will be used.
** Warning ** Both Shaded Construction and Shading Device are specified 
for WindowShadingControl WINSHADINGCONTROL SOUTH
** ~~~ ** The Shaded Construction="SGL CLR 3MM" will be used.
** Warning ** Exterior: Potential problem in match of unshaded/shaded 
constructions, shaded should have 1 more layers than unshaded.
===> Just added => ** ~~~ ** Unshaded construction=DBL CLR 3MM/6MM AIR
===> Just added => ** ~~~ ** Shaded construction=DBL CLR 3MM/6MM AIR


Because the WindowShadingControl looks like:
WindowShadingControl,
WinShadingControl EAST, !- User Supplied Shading Control Name
ExteriorShade, !- Shading Type
Dbl Clr 3mm/6mm Air, !- Name of construction with shading
OnIfHighSolarOnWindow, !- Shading Control Type
Sch Summer, !- Schedule Name
350, !- SetPoint {W/m2, W or deg C}
Yes, !- Shading Control Is Scheduled
Yes, !- Glare Control Is Active
HIGH REFLECT - LOW TRANS SHADE, !- Material Name of Shading Device

When you use "material name" for shading device, you leave the "name of 
construction with shading" blank. Or, alternatively, the "name of 
construction with shading" would be a construction with the shading layer 
in place.

The program ignored the shading device material and kept just the window 
construction which it now thought should have a shading layer.

Make all of these blank in your WindowShadingControl statments:

WindowShadingControl,

, !- Name of construction with shading


and it will get you past that error.



Linda

EnergyPlus WebSite: http://www.energyplus.gov
Owner: EnergyPlus_Support list
Member: EnergyPlus Development Team



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