Now that the model runs, activate one HAM wall and see if you have errors. If you do, adjust the thickness of components of your wall thickness and see if the error stops. If it does, you have fixed all walls that use the exact same construction. If you have other HAM walls that are not exactly the same construction, you will have to test them as well.
Depending on how much HAM construction you have, the envelope materials tend to smooth out space RH variations. I last used it to simulate a warehouse with lots of paper on storage racks. I can’t tell you how the exterior wall simulation works, but one limitation is that the weather files do not have rain, so the walls are not as responsive as a WUFI model would be. If you want to see how exterior wall construction affects interior conditions, try WUFIPlus. It is not as sophisticated as E+, but the wall heat and moisture transfer is direct from WUFI1D models.
Ned Lyon, P.E. (MA)
Staff Consultant
SIMPSON GUMPERTZ & HEGER
781.907.9000 main
781.907.9350 direct
781.907.9009 fax
www.sgh.com
From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of ariadnemm
Sent: Friday, November 04, 2011 9:08 AM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: [EnergyPlus_Support] Re: Heat and Moisture Simulation (EMPD and HAM)
My ideia is really to test the sensitivity of HAM model on Energy Plus, since I plan to consider moisture on simulation of old buildings.
I ran the model without HAM with the weather file, and it had no errors. I´m going to test other weather files to check, anyway.
Well, in case I don´t get rid of these warnings, the report states at the end that I can ignore the "Zone Air Heat Balance out of Balance" warnings, which are currently used only by developers.
Thanks for answering!
Regards!!
Ariadne Marques de Mendonça
Civil Engineer
Master student of Civil Engineering
Laboratory of Energy Efficiency in Buildings
UFSC - Universidade Federal de Santa Catarina
Florianópolis/SC - Brazil
e-mail: ariadnemm@...<mailto:ariadnemm@...>
MSN: ariadnemm@...<mailto:ariadnemm@...>
SKYPE: ariadnemm
--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Edward G. Lyon" <eglyon@...> wrote:
>
> From experience I have found the HAM model to be a little sensitive to material properties and thickness for some reason. Your errors seem to be associated with the weather file input and not the HAM model. Fix your model without HAM first, then run the moisture simulation.
>
> Ned Lyon, P.E. (MA)
> Staff Consultant
> SIMPSON GUMPERTZ & HEGER
> 781.907.9000 main
> 781.907.9350 direct
> 781.907.9009 fax
> www.sgh.com
>
> From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of ariadnemm
> Sent: Tuesday, November 01, 2011 11:23 AM
> To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> Subject: [EnergyPlus_Support] Heat and Moisture Simulation (EMPD and HAM)
>
>
>
> Greetings!!
>
> I'm a new user of Energy Plus and I'm exploring the possibilities of considering heat and moisture materials in the simulation.
> To begin testing, I started with a simple model of Bestest (case 900) and I assigned the materials based on the data set file: MoistureMaterials.idf.
> The simulation ran, but there were thousands of warnings, like recurring errors all along the calculations. I don't know if there is something missing in the parameters/objects, or if these warnings can be corrected.
>
> This is the ERR message:
> ____________________________________
>
> ************* No node connection errors were found.
>
> ************* Beginning Simulation
>
> ** Warning ** Calculated Relative Humidity out of range (PsyRhFnTdbRhovLBnd0C)
>
> ** ~~~ ** Routine=Unknown, Environment=Denver-Stapleton CO USA TMY--23062 WMO#=724690, at Simulation time=01/02 14:30 - 14:45
>
> ** ~~~ ** Dry-Bulb= 1.87 Rhovapor= 5.571E-003 Calculated Relative Humidity [%]= 101.16
>
> ** ~~~ ** Relative Humidity being reset to 100.0%
>
> ** Warning ** Zone Air Heat Balance is out of balance for zone named ZONE 1
>
> ** ~~~ ** Zone Air Heat Balance Deviation Rate is more than 47.9 {W}
>
> ** ~~~ ** Occurance info: Environment=Denver-Stapleton CO USA TMY--23062 WMO#=724690, at Simulation time=01/12 16:23 - 16:30
>
>
>
> And this is the summary ( I included "Output:Diagnostics" for more details):
>
> _________________________________________________
>
> ************* ===== Recurring Error Summary =====
>
> ************* The following recurring error messages occurred.
>
> *************
>
> ************* ** Warning ** Calculated Relative Humidity out of range (PsyRhFnTdbRhovLBnd0C)
>
> ************* ** ~~~ ** This error occurred 1997 total times;
>
> ************* ** ~~~ ** during Warmup 0 times;
>
> ************* ** ~~~ ** during Sizing 0 times.
>
> ************* ** ~~~ ** Max=132.001169 % Min=101.002451 %
>
> *************
>
> ************* ** Warning ** Zone Air Heat Balance is out of balance ... zone named ZONE 1
>
> ************* ** ~~~ ** This error occurred 2953 total times;
>
> ************* ** ~~~ ** during Warmup 0 times;
>
> ************* ** ~~~ ** during Sizing 0 times.
>
> ************* ** ~~~ ** Max=90.57367 {W} Min=1.896608E-003 {W}
>
> *************
>
> *************
>
> ************* ===== Final Error Summary =====
>
> ************* The following error categories occurred. Consider correcting or noting.
>
> ************* Zone Air Heat Balance Warnings
>
> ************* ..Zone Air Heat Balance out of Balance warnings are currently used by developers.
> ************* ..Users can safely ignore these warnings.
>
> _______________________________________________________________
>
>
>
> Is it ok to ignore these warnings, like said on the last line above?
>
>
>
> Thanks!!
>
>
>
> Regards!!
>
>
>
> --
> Ariadne Marques de Mendonça
> Civil Engineer
> Master student of Civil Engineering
> Laboratory of Energy Efficiency in Buildings
> UFSC - Universidade Federal de Santa Catarina
> Florianópolis/SC - Brazil
> e-mail: ariadnemm@...<mailto:ariadnemm@...
> http://www.linkedin.com/in/ariadnemm
> MSN: ariadnemm@...<mailto:ariadnemm@...
> SKYPE: ariadnemm
>
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