A second mixing box is not allowed.
You kind of said it in your question, "this only happens when the
outdoor air fraction is 1". The mixed and exhaust air steam flow
rates can only be the same when you are providing 100% outdoor air.
That's the key. Set your minimum outdoor flow rate to be the same as
the max supply air flow rate and see what happens.
On 2/24/2011 11:25 AM, Brouchery Herve wrote:
Hi Richard,
I come back to you on this topic. I succeeded to connect
the exhaust stream and I am now able to run a complete
simulation.
My problem now is that I would like to have the same flow
rate in both branches: the process branch and the exhaust
branch. In the file I sent (please refer to attached file
Dunkle_cycle_v1.pdf), this occurs only when the outdoor
air fraction is 1 (in the file, when x=1). For any other
fractions, the flow rates become unbalanced.
Do you think adding another outdoor air mixer could solve
the issue (please refer to the file Dunkle_cycle_v2.pdf)?
If no, could you please suggest me a way to solve it?
Many thanks for your help!
Herve
I am fairly sure that will work. At least the code seems to
allow it. You will need to attach your input file and send to:
energyplus-support@xxxxxxxx
or submit a ticket through the help desk web site at:
http://energyplus.helpserve.com/
On 2/16/2011 11:01 AM, Brouchery Herve wrote:
Hello,
I have tried to model the attached AirLoopHVAC
system under Energy Plus (see attached file
"Dunkle_cycle.pdf ").
I obtained the following error : Invalid Air Loop
Component Type =
"HEATEXCHANGER:AIRTOAIR:SENSIBLEANDLATENT". Why does
Energy Plus have such limitation? Do you know any
workaround that I could use?
Thanks in advance for your help.
Hervé
--
Richard A. Raustad
Senior Research Engineer
Florida Solar Energy Center
University of Central Florida
1679 Clearlake Road
Cocoa, FL 32922-5703
Phone: (321) 638-1454
Fax: (321) 638-1439 or 1010
Visit our web site at: http://www.fsec.ucf.edu
UCF - From Promise to Prominence: Celebrating 40 Years
--
Richard A. Raustad
Senior Research Engineer
Florida Solar Energy Center
University of Central Florida
1679 Clearlake Road
Cocoa, FL 32922-5703
Phone: (321) 638-1454
Fax: (321) 638-1439 or 1010
Visit our web site at: http://www.fsec.ucf.edu
UCF - From Promise to Prominence: Celebrating 40 Years