Re: [EnergyPlus_Support] HVAC BESTTEST

[Linda Lawrie <linda@xxxxxxxxxxxxxx>]

That doesn't look like a severe error -- why not paste in the full .err 
file?


On 2014-10-16 19:19, dingwenting@xxxxxxxxx [EnergyPlus_Support] wrote:
> Hi,
>
> I got the CE100.idf from others and it was the old version. I updated
> it to version 8.1 and ran it. but got a severe error.
>
> MATERIAL:Regular-R,
>  INSULATION-EXT, ! Material Name
>  VerySmooth, ! Roughness
>  50.00 , ! Thermal Resistance {m2-K/W}
>  0.9000 , ! Thermal Absorptance
>  0.1000 , ! Solar Absorptance
>  0.1000 ; ! Visible Absorptance
>
>  MATERIAL:Regular-R,
>  INSULATION-INT, ! Material Name
>  VerySmooth, ! Roughness
>  50.00 , ! Thermal Resistance {m2-K/W}
>  0.9000 , ! Thermal Absorptance
>  0.6000 , ! Solar Absorptance
>  0.6000 ; ! Visible Absorptance
>
>  CONSTRUCTION,
>  LTWALL, ! Construction Name
>  ! Material layer names follow:
>  INSULATION-EXT,
>  INSULATION-INT;
>
> The error message is
>
> This building has no thermal mass which can cause an unstable
> solution.
>  ** ~~~ ** Use Material object for all opaque material definitions
> except very light insulation layers.
>
> In Case E100 the wall construction is conposed of only two insulation
> layers.
>
> Who can give me some advice?
>
> Thank you very much.
>
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