Hello,
I'm trying to figure out the best way to simulate properly a building to be rehabilitated. The problem is, since it is a existent building to be rehabilitated, there will be different type of walls. My question is how to define the different U in the same wall? I'm importing the model from REVIT, can REVIT helps in that?
Thank you in advance for any help.
Best regards,
How to define different U values in the same wall
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Powerenergie
- VE Newbie
- Posts: 9
- Joined: Thu Feb 17, 2011 6:06 pm
Re: How to define different U values in the same wall
Hi,
To assign a different U-value to the wall you just create the Construction in the Constructions Database and then assign it using the Assign Constructions dialog in any thermal view.
Alternatively in the Revit plug-in or after import from Revit (Architecture only) the Set Model Properties dialog can be used to assign different Wall Constructions to the model. This may be easier for you but you will be limited to the pre-defined plug-in Constructions.
The User Guides (plug-ins and Apache view) will describe all of this in more detail but this is a fairly basic operation and if you are serious about doing analysis on your model then I'd really encourage you to get some training as you will not have any real confidence in your results if you are learning while on the job.
http://www.iesve.com/training for more info on the range of training courses we offer.
Phil
To assign a different U-value to the wall you just create the Construction in the Constructions Database and then assign it using the Assign Constructions dialog in any thermal view.
Alternatively in the Revit plug-in or after import from Revit (Architecture only) the Set Model Properties dialog can be used to assign different Wall Constructions to the model. This may be easier for you but you will be limited to the pre-defined plug-in Constructions.
The User Guides (plug-ins and Apache view) will describe all of this in more detail but this is a fairly basic operation and if you are serious about doing analysis on your model then I'd really encourage you to get some training as you will not have any real confidence in your results if you are learning while on the job.
http://www.iesve.com/training for more info on the range of training courses we offer.
Phil
IES Worldwide Technical Support
-
Powerenergie
- VE Newbie
- Posts: 9
- Joined: Thu Feb 17, 2011 6:06 pm
Re: How to define different U values in the same wall
Thank you for your reply.
However, I think you have not fully understood my question, about the thermal coefficients in the same wall. For instants, imagine only one room, and you have only one exterior 10 m² wall, and in that wall you will have 5m² of a granite stone wall with no insulation, and the other 5m² wall is made of bricks with insulation. Can I do that using IES?
About the Revit issue, I was trying to figure out if we could do some "trick" in order to prepare for a further assignment in IES environment.
Thank you
However, I think you have not fully understood my question, about the thermal coefficients in the same wall. For instants, imagine only one room, and you have only one exterior 10 m² wall, and in that wall you will have 5m² of a granite stone wall with no insulation, and the other 5m² wall is made of bricks with insulation. Can I do that using IES?
About the Revit issue, I was trying to figure out if we could do some "trick" in order to prepare for a further assignment in IES environment.
Thank you
Re: How to define different U values in the same wall
Yes you can.
When you have created both walls, then in Apache select the walls you want to have another "type" and click on "Assign constructions". Then you can pick the other walltype you created for those.
Kasper
When you have created both walls, then in Apache select the walls you want to have another "type" and click on "Assign constructions". Then you can pick the other walltype you created for those.
Kasper
Re: How to define different U values in the same wall
I think I understand better, you may need to break the walls into sections to assign different Constructions.
Easiest way to do that in VE would be to select the room in ModelIT then use divide space to cut along the lines where the different Constructions would be assigned. At this point you have two rooms, you then have the option to leave as two separate rooms (you can have a hole between them so there is no thermal resistance between them) or Connect them and so the space is recognised as a single room again but now you will see the Wall surfaces are still split as you had divided them.
In a thermal view you can then select the room and go down the levels of decomposition to surface level and assign different Constructions to each surface (as KasperS described), this would then give you the model as you require.
If you want to do the majority of this in Revit then you would need to define the different volumes of the rooms with different room/space elements before export to VE but really I'd suggest this process is just as easy to entirely do in VE.
Note: SketchUp users have the option to add lines to the model prior to identifying rooms and these will split the surfaces up when they are imported to VE.
Phil
Easiest way to do that in VE would be to select the room in ModelIT then use divide space to cut along the lines where the different Constructions would be assigned. At this point you have two rooms, you then have the option to leave as two separate rooms (you can have a hole between them so there is no thermal resistance between them) or Connect them and so the space is recognised as a single room again but now you will see the Wall surfaces are still split as you had divided them.
In a thermal view you can then select the room and go down the levels of decomposition to surface level and assign different Constructions to each surface (as KasperS described), this would then give you the model as you require.
If you want to do the majority of this in Revit then you would need to define the different volumes of the rooms with different room/space elements before export to VE but really I'd suggest this process is just as easy to entirely do in VE.
Note: SketchUp users have the option to add lines to the model prior to identifying rooms and these will split the surfaces up when they are imported to VE.
Phil
IES Worldwide Technical Support