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Parametric Analysis Tool - Set Roof U Value.

asked 2021-03-02 13:14:57 -0600

TheEnergyTutor's avatar

updated 2021-04-07 13:15:00 -0600

PAT doesn't output any results. Does anyone notice what I did wrong? It's a pretty simple process to set this up so I don't know why it doesn't work.

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I used the change roof insulation by percentage and it works fine. Is there something wrong with this specific measure?

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I have not used this measure (it was written by Xcel) but looking at the fist screenshot it takes in as an argument a construction in the model to change. If you want to use this specific measure I would see if selecting a roof construction resolves the error you are seeing.

David Goldwasser's avatar David Goldwasser  ( 2021-03-02 16:32:48 -0600 )edit

Maybe this brings light to a need for better measure documentation? I thought parameters were optional and also I wouldn't know what to put there since it isn't a selector box. The roof construction name in Open Studio? Is an R-30 fiberglass roof significantly different than a R-30 cellulose roof?

TheEnergyTutor's avatar TheEnergyTutor  ( 2021-03-15 14:51:27 -0600 )edit

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answered 2021-06-09 11:18:09 -0600

OH.AME2021's avatar

I spent a good amount in trial and error with this measure in OS and PAT. You will need to pick a specific Construction corresponding to a Roof surface. You will have to make sure this construction includes an Insulation layer (i.e. No Mass Material) in your Construction definition.

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Asked: 2021-03-02 13:14:57 -0600

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Last updated: Mar 02 '21