[EnergyPlus_Support] Re: Advisory Messages for LEED EAp2 form

["billysonny1" <bscr_14@xxxxxxxxxxx>]

Thanks for your reply Jeremiah,

This is part of the Error log file for one of my baseline simulations (0º).

Please advice,
Thanks in advance.

Billy Condor.



Program Version,EnergyPlus-64 7.0.0.036, 08/08/2013 10:50,IDD_Version 7.0.0.036
   ************* Beginning Zone Sizing Calculations
   ** Warning ** Site:GroundTemperature:BuildingSurface: Some values fall outside the range of 15-25C.
   **   ~~~   ** These values may be inappropriate.  Please consult the Input Output Reference for more details.
   ** Warning ** Detached shading effects are ignored when Solar Distribution = MinimalShadowing
   ** Severe  ** GetSurfaceData: Some Outward Facing angles of subsurfaces differ significantly from flat roof/floor base surface.
   **   ~~~   ** Fixes will be attempted to align subsurface with base surface.
   **   ~~~   ** ...use Output:Diagnostics,DisplayExtraWarnings; to show more details on individual surfaces.
   ************* GetSurfaceData: There were 9 subsurfaces whose orientation (azimuth) could not be fixed to align with the base surface.
   ************* Shadowing calculations may be inaccurate. Use Output:Diagnostics,DisplayExtraWarnings; for details.
   ** Warning ** CalcSurfaceCentroid: 2 Surfaces have the Z coordinate < 0.
   **   ~~~   ** ...in any calculations, Wind Speed will be 0.0 for these surfaces.
   **   ~~~   ** ...in any calculations, Outside temperatures will be the outside temperature + 9.750E-003 for these surfaces.
   **   ~~~   ** ...that is, these surfaces will have conditions as though at ground level.
   ** Warning ** GetSurfaceData: There are 4 coincident/collinear vertices; These have been deleted unless the deletion would bring the number of surface sides < 3.
   **   ~~~   ** For explicit details on each problem surface, use Output:Diagnostics,DisplayExtraWarnings;
   ** Warning ** CheckUsedConstructions: There are 5 nominally unused constructions in input.
   **   ~~~   ** For explicit details on each unused construction, use Output:Diagnostics,DisplayExtraWarnings;
   ************* Beginning System Sizing Calculations
   ** Warning ** ManageSizing: For a plant sizing run, there must be at least 1 Sizing:Plant object input. SimulationControl Plant Sizing option ignored.
   ************* 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 ** Coil:Cooling:DX:SingleSpeed "AIR LOOP/SOTANO AHU/1 UNITARY DX COOLING COIL" - Air volume flow rate per watt of rated total cooling capacity is out of range at 1.127E-005 m3/s/W.
   **   ~~~   **  Environment=AULARIO, at Simulation time=01/01 00:10 - 00:15
   **   ~~~   ** Expected range for VolumeFlowPerRatedTotalCapacity=[2.684E-005--6.713E-005]
   **   ~~~   ** Possible causes include inconsistent air flow rates in system components,
   **   ~~~   ** or variable air volume [VAV] system using incorrect coil type.
   ** Warning ** Coil:Cooling:DX:SingleSpeed "AIR LOOP/SOTANO AHU/1 UNITARY DX COOLING COIL" - Full load outlet air dry-bulb temperature < 2C. This indicates the possibility of coil frost/freeze. Outlet temperature = -25.14 C.
   **   ~~~   **  ...Occurrence info = AULARIO, 01/01 00:10 - 00:15
   **   ~~~   ** ... Possible reasons for low outlet air dry-bulb temperatures are: This DX coil
   **   ~~~   **    1) may have a low inlet air dry-bulb temperature. Inlet air temperature = 20.661 C.
   **   ~~~   **    2) may have a low air flow rate per watt of cooling capacity. Check inputs.
   **   ~~~   **    3) is used as part of a HX assisted cooling coil which uses a high sensible effectiveness. Check inputs.
   ** Warning ** Enthalpy out of range (PsyTsatFnHPb)
   **   ~~~   **  Routine=CalcDoe2DXCoil, Environment=AULARIO, at Simulation time=01/01 00:23 - 00:30
   **   ~~~   **  Enthalpy=-48083.47942 Pressure= 100900.00
   **   ~~~   **  Initial Resultant Temperature= -59.98
   ** Warning ** Calculated Humidity Ratio invalid (PsyWFnTdbH)
   **   ~~~   **  Routine=CalcDoe2DXCoil, Environment=AULARIO, at Simulation time=01/01 00:23 - 00:30
   **   ~~~   **  Dry-Bulb= -59.98 Enthalpy= -65947.179
   **   ~~~   ** Calculated Humidity Ratio= -2.3718E-003 ... Humidity Ratio set to .00001
   ** Warning ** WriteVeriSumTable: InputVerificationsAndResultsSummary: Wall area based on [>=60,<=120] degrees (tilt) as walls
   **   ~~~   ** differs ~18.3% from user entered Wall class surfaces. Degree calculation based on ASHRAE 90.1 wall definitions.
   **   ~~~   ** Calculated based on degrees=[8085.092] m2, Calculated from user entered Wall class surfaces=[6833.452] m2.
   **   ~~~   ** Check classes of surfaces and tilts for discrepancies.
   ************* Simulation Error Summary *************
   ** Warning ** The following Report Variables were requested but not generated
   **   ~~~   ** because IDF did not contain these elements or misspelled variable name -- check .rdd file
   ************* Key=SOTANO:DEPOSITO, VarName=ZONE MECHANICAL VENTILATION AIR CHANGE RATE, Frequency=Monthly

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Jeremiah Crossett <jcrossett@...> wrote:
>
> The rule is that you must understand the warning and be able to explain it.
> Does not really matter what the warning is, just that you understand why it
> does not matter.  The question then is, why is this warning happening and
> why does it not matter?  Could you paste the warning into the body of your
> email..?
> 
> 
> *
> *
> *
> *
> *Jeremiah D. Crossett  | Senior Analyst  |  Phase Change Energy Solutions*
> *
> 120 E. Pritchard St.  | Asheboro, NC 27203  | Mobile 503-688-8951
> www.phasechange.com
> *
> 
> *
> *
> *
> *
> 
> 
> 
> On Mon, Aug 12, 2013 at 9:11 AM, billysonny1 <bscr_14@...> wrote:
> 
> > **
> >
> >
> > Hello dear forum,
> >
> > For LEED EAp2 form, I got over 2 million warning messages and 1 error
> > message recorded in the Error log file, the results say the simulation was
> > completed successfully, though.
> >
> > So, I have two specific questions:
> > 1. Where can I find in the reports the 'Number of defaults overriden'?
> > 2. According to your experience, do you consider that a lot of Warning
> > messages would make the LEED reviewer ask for a clarification?
> >
> > Thanks in advance,
> >
> > Billy Condor.
> >
> >  
> >
>



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