[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

RE: [EnergyPlus_Support] RE: Water coil meets the load with no water flow rate...

I have seen this sort of thing happen when the input for water coil’s control is set up with both a Unitary system and a Controller:WaterCoil.  It needs to be one or the other but not both.  


From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of stagiaire3@xxxxxxxx
Sent: Thursday, September 26, 2013 7:02 AM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: [EnergyPlus_Support] RE: Water coil meets the load with no water flow rate...



I must add that this is not only a report problem. With total water coil cooling coil rate and input/output water temperature, I could do the math to determine water flow rate...


The point is that I have 70kW total cooling coil rate, and 0kW chiller electric power, so the 0m3/s water flow rate is really accounted by E+...


Hoping this could help understanding my problem,



---In EnergyPlus_Support@xxxxxxxxxxxxxxx, <energyplus_support@xxxxxxxxxxxxxxx> wrote:

Dear community,

I have some troubles modeling a dehumidification system that consists of a water cooling coil and a water heating coil in series, for both fluids: the output water from the cooling coil (at approximately 20°C) is used to re-heat the air stream through a heating coil before heading back to the chiller.
As I run simulations, it appears that the loads are met, and that the water temperatures at cooling coil inlet node, cooling coil outlet node (=heating coil inlet node) and heating coil outlet node are coherent: 5/19.3/14.4°C. But there is no water flow rate reported, using both "system node massflowrate" and "system node volume flow rate standard density", while air flow rate is well reported.
I get no warning or errors on this in the err file.

Does anyone have any idea on what is happening here?




Primary EnergyPlus support is found at:
http://energyplus.helpserve.com or send a message to energyplus-support@xxxxxxxx

The primary EnergyPlus web site is found at:

The group web site is:

Attachments are currently allowed but be mindful that not everyone has a high speed connection.  Limit attachments to small files.

EnergyPlus Documentation is searchable.  Open EPlusMainMenu.pdf under the Documentation link and press the "search" button.

Your email settings: Individual Email|Traditional
Change settings via the Web (Yahoo! ID required)
Change settings via email: Switch delivery to Daily Digest | Switch to Fully Featured
Visit Your Group | Yahoo! Groups Terms of Use | Unsubscribe