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Re: [EnergyPlus_Support] Interior Geometry



Long, 
Personally I would ignore it- but your call. 
Keep in mind Energy Modeling is all about simplification and assumptions- possibly you might call it a sub surface, but I doubt if it is thermodynamically important, or that your assumptions would be all that different than just leaving it as a wall..
(I wonder what others on the list would do with such?)


Jeremiah D. Crossett
CleanTech Analytics
503-688-8951
www.cleantechanalytics.com


This document may contain valuable information proprietary to CleanTech Analytics which is private and confidential. It may not be shared, copied, stored or transmitted in any form without the prior written consent of CleanTech Analytics




On Mon, Jul 23, 2012 at 1:55 PM, Long T. Phan <ltb.phan@xxxxxxxxx> wrote:
 

Hi, Jeremiah


It's me again. Let's say I have something big attached to the interior wall like an air conditioner, so it occupies a large surface area of the wall. Do I need to draw the model geometry of that AC for later calculation of its surface temperature or just ignore it and focus on the wall geometry only? I see some tutorial video on youtube, they consider partition like cubical in an office space.

Best Regards,
Long


On Mon, Jul 23, 2012 at 4:05 PM, Long T. Phan <ltb.phan@xxxxxxxxx> wrote:
Thank you Jeremiah.

Long


On Mon, Jul 23, 2012 at 3:25 PM, CleanTech Analytics <jeremiah@xxxxxxxxxxxxxxxxxxxxxx> wrote:
 

The internal items can be accounted for later as internal mass. You do not want to specify anything other than the external shell and internal zone boundary's.

Also you will not want to save as sketchup format whatsoever (even tho it will ask you to do so) save only in open studio or export IDF. Many use open studio/sketchup for creation of IDF and use IDF editor from there. 

Have fun-


Jeremiah D. Crossett
CleanTech Analytics

This document may contain valuable information proprietary to CleanTech Analytics which is private and confidential. It may not be shared, copied, stored or transmitted in any form without the prior written consent of CleanTech Analytics




On Mon, Jul 23, 2012 at 12:20 PM, Long Phan <ltb.phan@xxxxxxxxx> wrote:
 

Hi Group,

I'm a new user in EnergyPlus. I am trying to learn this software. My question is when creating a office building geometry in Google Sketchup for EPlus, do I need to draw stuff inside the office like furniture, tables, chairs, etc., in order to accurately simulate the office energy use? Or just simply an empty envelope and then specify loads later?

Thanks for your help,
Long







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