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Re: [EnergyPlus_Support] epw File Wind Velocity edit through Element software





One of the easier ways to edit the epw is to use the weather converter that is distributed with EnergyPlus, save it as an "EnergyPlus CSV", edit it and reuse the weather converter to save it back to an EPW.

(You can do this with a straight EPW, but it's a little trickier).

It appears that Elements is possibly putting those NaN into the weather line.

Linda

At 06:22 AM 1/16/2018, Javed Iqbal eee.javed@xxxxxxxxx [EnergyPlus_Support] wrote:


Dear All,

I am in a process of doing some validation studies for Natural Ventilation (wind and stack effect). For the same, i am trying to edit ..epw file through element software in order to make some changes in the wind velocity column. After making changes when i run simulation, it throw back some Nan errors. I believe this happens when i "save as" epw file opened in element after making the respective changes. so this is happening during the transition.Â

Please suggest how to resolve this error.

Program Version,EnergyPlus, Version 8.3.0-6d97d074ea, YMD=2018.01.16 13:52,IDD_Version 8..3.0
   ** Warning ** Weather file location will be used rather than entered (IDF) Location object.
   **   ~~~   ** ..Location object=DENVER CENTENNIAL CO USA WMO=724666
   **   ~~~   ** ..Weather File Location=BUDAPEST-innercity-FA - - MN7 WMO#=999
   **   ~~~   ** ..due to location differences, Latitude difference=[7.95] degrees, Longitude difference=[123.93] degrees.
   **   ~~~   ** ..Time Zone difference=[8.0] hour(s), Elevation difference=[94.03] percent, [1686.00] meters.
   ** Warning ** SetUpDesignDay: Entered DesignDay Barometric Pressure=81560 differs by more than 10% from Standard Barometric Pressure=100046.
   **   ~~~   ** ...occurs in DesignDay=DENVER CENTENNIAL ANN HTG 99.6% CONDNS DB, Standard Pressure (based on elevation) will be used.
   ** Warning ** GetAirPathData: AirLoopHVAC="EVAP COOLER SYSTEM" has no Controllers.
   ** Warning ** SetUpDesignDay: Entered DesignDay Barometric Pressure=81560 differs by more than 10% from Standard Barometric Pressure=100046.
   **   ~~~   ** ...occurs in DesignDay=DENVER CENTENNIAL ANN CLG 1% CONDNS DB=>MWB, Standard Pressure (based on elevation) will be used.
   ** Severe  ** Invalid Weather Line at date=2005/ 1/ 1 Hour#= 1 Min#= 0
   **   ~~~   ** Full Data Line=2005,1,1,1,0,*?*?*?*?*?*?*?*?*?*?*?*?*?*?*?*?*?*?*?*?*?*?,6,2.8,80,99912,0,0,299,0,0,0,0,0,0,9999,218,0,10,9,9999,99999,9,909999999,11,0.115,0,2,NaN,NaN,NaN
   **   ~~~   ** Remainder of line=NaN,NaN,NaN
   **  Fatal  ** Error in Reading Weather Data
   ...Summary of Errors that led to program termination:
   ..... Reference severe error count=1
   ..... Last severe error=Invalid Weather Line at date=2005/ 1/ 1 Hour#= 1 Min#= 0
   ************* Warning:  Node connection errors not checked - most system input has not been read (see previous warning).
   ************* Fatal error -- final processing.  Program exited before simulations began.  See previous error messages.
   ************* EnergyPlus Warmup Error Summary.. During Warmup: 0 Warning; 0 Severe Errors.
   ************* EnergyPlus Sizing Error Summary. During Sizing: 0 Warning; 0 Severe Errors.
   ************* EnergyPlus Terminated--Fatal Error Detected. 4 Warning; 1 Severe Errors; Elapsed Time=00hr 00min  0.27sec

â??Thanks,â??

--


Javed Iqbal, LEED AP, CEA
Sr. Energy AnalystÂ









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Posted by: Linda Lawrie <linda@xxxxxxxxxxxxxx>


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