Jeremiah,
This happens all the time for my DX coils. Generally it?s a small overshoot. My guess is that it?s essentially a psychrometric calculation rounding error.
James V Dirkes II, PE, BEMP, LEED AP
www.buildingperformanceteam.com
Energy Analysis, Commissioning & Training Services
1631 Acacia Drive, Grand Rapids, MI 49504 USA
616 450 8653
From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of Jeremiah Crossett
Sent: Wednesday, January 08, 2014 12:36 PM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: [EnergyPlus_Support] Humidity out of range [1 Attachment]
Dear List-
For some reason humidity is going over 100% in my models, does anyone have any ideas as to why? (ideally I want to stop the warning, but if I can not then I must be able to explain why it is happening)
Many thanks for any suggestions
Program Version,EnergyPlus, Version 8.1, YMD=2014.01.07 21:21,IDD_Version 8.1.0.008
************* Beginning Zone Sizing Calculations
************* Testing Individual Branch Integrity
************* All Branches passed integrity testing
************* Testing Individual Supply Air Path Integrity
************* All Supply Air Paths passed integrity testing
************* Testing Individual Return Air Path Integrity
************* All Return Air Paths passed integrity testing
************* No node connection errors were found.
************* Beginning Simulation
** Warning ** Calculated Relative Humidity out of range (PsyRhFnTdbWPb)
** ~~~ ** Routine=Unknown, Environment=SALT LAKE CITY, at Simulation time=12/31 24:00 - 24:03
** ~~~ ** Dry-Bulb= 21.11 Humidity Ratio= 1.600E-002 Calculated Relative Humidity [%]= 101.45
** ~~~ ** Relative Humidity being reset to 100.0%
************* Simulation Error Summary *************
*************
************* ===== Recurring Error Summary =====
************* The following recurring error messages occurred.
*************
************* ** Warning ** Calculated Relative Humidity out of range (PsyRhFnTdbWPb)
************* ** ~~~ ** This error occurred 1 total times;
************* ** ~~~ ** during Warmup 0 times;
************* ** ~~~ ** during Sizing 0 times.
************* ** ~~~ ** Max=101.455449 % Min=101.455449 %
*************
************* EnergyPlus Warmup Error Summary. During Warmup: 0 Warning; 0 Severe Errors.
************* EnergyPlus Sizing Error Summary. During Sizing: 0 Warning; 0 Severe Errors.
************* EnergyPlus Completed Successfully-- 1 Warning; 0 Severe Errors; Elapsed Time=00hr 39min 13.54sec
Jeremiah D. Crossett | Senior Analyst | Phase Change Energy Solutions
120 E. Pritchard St. | Asheboro, NC 27203
| Mobile 503-688-8951
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