Re: [EnergyPlus_Support] too many warning errors

[Bereket Nigusse <nigusse_ba@xxxxxxxxx>]

Hi Roza,

Sometimes ,this kind of problem occurs when the DX cooling coil model calculates the operating sensible heat ratio (SHR) for a cooler outdoor air temperature and when the ratio of supply air flow rate to the cooling capacity at a given time step is low. In this situation, the DX cooling coil model predicted air outlet humidity ratio goes way outside the moist air psychometric valid range(e.g. negative humidity ratio).

You have limited or no direct control over it.  Probably, you may minimize it if you could use the maximum allowed flow to capacity ratio by increasing the design supply air flow rate.

Hope this helps,

Bereket

---

From: roza <rozavakilinejad@xxxxxxxxx>
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Sent: Sunday, April 28, 2013 1:45 AM
Subject: [EnergyPlus_Support] too many warning errors

 

Hi. Running the model I have made, I get the following warning for 363 times!
What is the problem? Can I trust the results and use them?
Warning ** Calculated Humidity Ratio invalid (PsyWFnTdbH)
~~~ ** This error occurred 363 total times; during Warmup 0 times;during Sizing 0 times.

__._,_.___

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:
http://www.energyplus.gov

The group web site is:
http://groups.yahoo.com/group/EnergyPlus_Support/

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

__,_._,___