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Nominal Resistance (Flat R-Value) in lieu of k-value (Thermal Conductivity)

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josh.hafel
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Nominal Resistance (Flat R-Value) in lieu of k-value (Thermal Conductivity)

Hello,

 

I am new to engergy modeling in Revit and when I was trying to set up materials, but the Thermal Properties, while they go very in-depth with setting like Electical Resistivity, they also feel limited in their flexibility. I want to create a material for my stud cavities (e.g. a fiberglass batt) however it seems like I have to use Thermal Conductivity to calculate the R-Value by thickness. This is great for my Rigid isulations like Rockwool which is 4.2 per inch, but fiberglass batt is R-19 period (in my zone) doesn't matter if its in a 5.5" stud or a 3.5" stud the R-value is always R-19.

 

Is there a way to change the thermal properties so that it calculates the Nominal Resistance instead of Thermal Conductivity or am I going to have to duplicate materials for each stud cavity thickness? Ideally I would have one material for metal stud and one for wood stud (simply to account for the thermal bridging), but I feel like duplicating those 3-4 times each for each stud thickness seems like overkill.

 

Also, if anyone has any good resources to help me learn evelope energy modeling in Revit, that would be much appreciated!

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barthbradley
als Antwort auf: josh.hafel

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josh.hafel
als Antwort auf: barthbradley

My bad, I reposted on the Insight Forum. I figured it was Revit Materials so it went here
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barthbradley
als Antwort auf: josh.hafel


@josh.hafel wrote:
My bad, I reposted on the Insight Forum. I figured it was Revit Materials so it went here

 

No worries.

 

Look into Conceptual Types.

 

Help | Material Thermal Properties - Conceptual Types | Autodesk

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