Re: [EnergyPlus_Support] High conductivity Material layers

["Jean Marais jeannieboef@xxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx>]

use the new simplified model to model hanged chilled ceiling panels

or

increase the thickness of your layer and simulate at 60 timesteps per hour, and monitor the surface temperature.

Am 20.01..2018 11:48 vorm. schrieb "mirko.viale@xxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx>:

 

Hi everyone! 

Iâ??m modeling a metal radiant cooling ceiling panel. 

The lower layer of the panel is a steel sheet, that means the surface toward the conditioned space, 0.001 m thickness and 50 W/mK conductivity. 

EnergyPlus reports the sever error â??Found Material that is too thin and/or too highly conductiveâ??. 

Using Conduction Finite Difference as heat balance algorithm the simulation doesnâ??t continue due to this error. EP also reports me that â??High conductivity Material layers are not well supported by Conduction Finite Differenceâ??. 

I also tried with Conduction Transfer Function as heat balance algorithm and it gives me the same error but in this case the simulation reaches the end. 

Is there a way to â??bypassâ?? this problem? I mean, isnâ??t it possible to model such a steel sheet? 

Thank you 

Mirko

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Posted by: Jean Marais <jeannieboef@xxxxxxxxx>

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