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[EnergyPlus_Support] Re: HAMT and thin layers

Thanks Ned,

We have a large batch of HAMT simulations coming up, an it is good to
know what to expect. Fingers crossed!

Fran


--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Edward G. Lyon" <eglyon@...>
wrote:
>
> You can apparently use very thin layers, I have entered roof membrane
thicknesses.  All materials get divided into 10 layers.  That said,
there can be problems with thickness.  I had the same insulation
material with several thicknesses for a model, but one of the
thicknesses crashed the simulation.  I had to change the material
properties and thickness to make things work.  There also seems to be
some issue with thin, impermeable layers that I have not fully resolved
in my models.  One gets a repetitive error about calculating humidity
greater than 100% in these assemblies.
>
> Ned Lyon, P.E. (MA)
> Staff Consultant
> SIMPSON GUMPERTZ & HEGER
> 781.907.9000 main
> 781.907.9350 direct
> 781.907.9009 fax
> www.sgh.com
>
> From: EnergyPlus_Support@xxxxxxxxxxxxxxx
[mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of fransalinas2004
> Sent: Wednesday, September 01, 2010 7:07 AM
> To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> Subject: [EnergyPlus_Support] HAMT and thin layers
>
>
>
> Dear all,
>
> Reading the documentation, it is not clear to me how the cells in HAMT
simulation deal with very thin layers such as films or membranes. What
is the thinnest material layer I can input safely in this kind of
simulation?
>
> Thanks,
>
> Fran
>




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