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RE: [EnergyPlus_Support] Re: Material Properties
yes
this explanation makes the implementation a lot simpler and easier.
Thanks
Rahul Chillar
At 05:29 PM 7/19/2004 +0200, you wrote:
>R = thickness / Thermal conductivity
>Then if you know thermal conductivity you can "calculate" R or vice versa.
>
>
>JOSEP SOLE
>Dirección Tecnica POLIGLAS
>nueva dirección mail : josep.sole@xxxxxxxxxxx
>
>-----Mensaje original-----
>De: chillarrahul [mailto:chillar@xxxxxxxx]
>Enviado el: lunes, 19 de julio de 2004 16:55
>Para: EnergyPlus_Support@xxxxxxxxxxxxxxx
>Asunto: [EnergyPlus_Support] Re: Material Properties
>
>
>Hello
>
>In this case i can suggest 3 options:
>
>First you can break your 4 inch insulation into two insulation layers
>of 1 inch and 3 inch and specify the properties from the dataset ,
>or something like that and proceed ahead.
>Second is that you can look up the properties in some material
>handbook and just replace the required fields.
>Third is if you simply have the R value of the material ,(use the
>Material-R field, in this case you wont require the thickness of the
>material)
>
>Hope this helps
>
>Thanks
>Rahul Chillar
>Grad Research Assistant, Building Systems Lab
>Mechanical Engineering , University of Illinois - UC
>
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>--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "khizir_mahmud"
><khizir_mahmud@y...> wrote:
> > Hi
> >
> > Thanks for the guideline of finding the values of the building
> > material properties . Now I am working with the following materials
> >
> > 1. 0.5 mm galv. steel sheet
> > 2. Insulated Polyurethane (3 in)
> > 3. Insulated Polyurethane (4 in)
> >
> > From the BLASTMaterials.idf file i got the following properties ,
> >
> > 1. MATERIAL:Regular,METAL - GALVANIZED STEEL 1 / 16 IN, !-
>Material
> > Name
> > Smooth, !- Roughness
> > 1.6000000E-03, !- Thickness {m}
> > 45.31000 , !- Conductivity {w/m-K}
> > 7833.020 , !- Density {kg/m3}
> > 500.0000 , !- Specific Heat {J/kg-K}
> > 0.9000000 , !- Thermal Emittance
> > 0.2300000 , !- Solar Absorptance
> > 0.2300000 ; !- Visible Absorptance
> >
> > 2. MATERIAL:Regular,INS - EXPANDED POLYURETHANE R11 3 IN, !-
> > Material Name
> > VeryRough, !- Roughness
> > 7.0000000E-02, !- Thickness {m}
> > 2.0000000E-02, !- Conductivity {w/m-K}
> > 32.03000 , !- Density {kg/m3}
> > 1580.000 , !- Specific Heat {J/kg-K}
> > 0.9000000 , !- Thermal Emittance
> > 0.5000000 , !- Solar Absorptance
> > 0.5000000 ; !- Visible Absorptance
> >
> >
> >
> > But i didnt get the properties of polyurethane 4 in . How can i
> > manage the properties of Polyurethane 4 in ?
> >
> > And the Galv steel is 1/16 in ( 1.58 mm ). so how can i get the
> > values of Galv.steel which is 0.5 mm ?
> >
> > And what is the procedure of getting the properties of the material
> > which is not listed in the BLASTMaterials.idf file ?
> >
> > Could anybody help me in this regard .
> >
> > thank you
> >
> > khizir mahmud
> >
> >
> >
> >
> >
> > --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "chillarrahul"
> > <chillar@u...> wrote:
> > > Hi
> > > you will find the standard properties of your materials in the
> > > DataSet Folder where EnergyPlus is installed, when you reach data
> > > sets open up BLASTMaterials.idf in notepad and search for your
> > > materials , you will find the required properties of various
> > > materials in the dataset folder.
> > >
> > > Thanks
> > >
> > > Rahul Chillar
> > > Grad Research Assistant, Building Systems Lab
> > > Mechanical Engineering , University of Illinois - UC
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Khizir Mahmud
> > > <khizir_mahmud@y...> wrote:
> > > > Hi All
> > > >
> > > > In material-regular catagory i am working with two objects.
> > > >
> > > > 1. 0.5 mm galv. steel sheet
> > > > 2. Insulated Polyurethane (125 mm)
> > > >
> > > > Is there any energyplus recommended material guideline ? Or is
> > > there any standard source from where we could collect the value
>of
> > > the material properties. Could anyone help me in this regard.
> > > >
> > > > Thank you
> > > >
> > > > Khizir Mahmud
> > > >
> > > >
> > > >
>_________________________________________________________________
> > > >
> > > > Khizir Mahmud
> > > >
> > > > e-mail: khizir_mahmud@y...
> > > > khizir_mahmud@h...
> > > >
> > > >
> > > >
>_________________________________________________________________
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Rahul Chillar
Grad Research Assistant, Building Systems Lab
Mechanical Engineering , University of Illinois - UC
1206 West Green Street 217- 2441346 office
Urbana, IL 61801 USA 217-7213063 mobile
http://www.bso.uiuc.edu/~chillar/
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