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RE: [EnergyPlus_Support] Re: Outside Surface Temperature - Conduction Finite Difference Method



I am a little confused about what you meant by true north. May be we both are on the same page. But here is how I have understood the coordinate system in Openstudio Sketchup plugin. Solid green line is north. Dotted green line is south. Solid  red line is east and the dotted red line is west. (For example: if an outside surface is facing towards the dotted green line, the surface is a south facing surface). I can understand how this can be confusing. A visual would help understand  but I can’t seem to find any. I just thought of a better way to understand this. Put yourself inside the building and look towards a direction, say South (towards dotted green line); the outside face towards that direction would be the south facing surface.


Please correct me if I am wrong or let me know if you meant the same.




From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of Niraj Poudel
Sent: Friday, June 17, 2011 9:37 AM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: [EnergyPlus_Support] Re: Outside Surface Temperature - Conduction Finite Difference Method



Dear Ooi,

The reason why I am using CFD as opposed to CTF for my simulation is because I intend to place PCM (Phase Change Materials) in my test hut. And as Dr. Li pointed out, I am working on a research project therefore am trying out different algorithms. Initially I did run the simulation using the CTF algorithm.

However, to get back to the original topic. I apparently made a mistake in naming the walls in OpenStudi


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