Re: [EnergyPlus_Support] Solid Adsorbents

[Lixing Gu <gu@xxxxxxxxxxxx>]

Eric:

The four fields (dimensionless coefficients) used in the object 
Materialproperty:mosisture:EMPD defines a relationship between moisture 
content and relative humidity. Eq. (35) on page 30 in the Engineering 
Reference (ver. 1.3) provides the relationship.

MositureMaterials.idf has several materials with EMPD properties. If you 
could not find materials you would like to use, you may need to find 
measured sorption data and curve-fit them based on Eq. (35).

Hope the above answers help.

Lixing Gu


----- Original Message ----- 
From: "eric_zhou1223" <eric_zhou1223@xxxxxxxxx>
To: <EnergyPlus_Support@xxxxxxxxxxxxxxx>
Sent: Sunday, April 30, 2006 6:13 AM
Subject: [EnergyPlus_Support] Solid Adsorbents


> Hi all
>
> In the object Materialproperty:mosisture:EMPD, there are 4 fields
> needed to be filled in, which look pretty like 4-order polynomial
> coefficients. I checked I/O and Engineering documentation and didnot
> found any detailed information about these except below:
>
> Field: Constants to Define Equilibrium Equation
> The next four fields describe the sorption isotherm curve used for
> building materials. These
> four fields are dimensionless coefficients.
>
> Could anyone tell me where to get these curves for the common Solid
> Adsorbents, e.g. Silica gels,Zeolites,Synthetic zeolites (molecular
> sieves),Activated aluminas, etc?  Or need to curve-fit them by
> something available?
>
> Your helps would be appreciated.
>
> Eric
>
>
>
>
>
>
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> 




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