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Old 12-08-11, 04:51 PM   #14
AC_Hacker
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Quote:
Originally Posted by Xringer View Post
Check on the duct work in Fig 4 & 6 on pages 16 & 17.
I know it's just for testing, but it's interesting nonetheless.
I think it looks pretty darn strange.

In the introduction, it looks like they are trying to establish a methodology for measuring the COP of mini-splits.

But in this photo:


...they are clearly trying to account for ALL of the air that is coming into the mini-split...

And in this picture:



...it is clear that the incoming air duct that is being implemented is MUCH smaller that the opening in the front of the mini-split for air expulsion, so the duct itself is a significant bottle neck to the flow of air, and would significantly diminish the COP of the system.

And this! What the heck is this? It looks like a college freshman's bad-beer nightmare...


I think NREL has some explaining to do.

But the incoming air duct is something for you to keep in mind when you build your attic hear reclaimer duct.

Good luck on this project.

-AC_Hacker
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