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WindowMaterial:ComplexShade- the range of emissivity in the idd #7698

Closed
1 of 3 tasks
LipingWang opened this issue Jan 21, 2020 · 0 comments · Fixed by #7708
Closed
1 of 3 tasks

WindowMaterial:ComplexShade- the range of emissivity in the idd #7698

LipingWang opened this issue Jan 21, 2020 · 0 comments · Fixed by #7708

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@LipingWang
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LipingWang commented Jan 21, 2020

Issue overview

When the emissivity (Front and Back ) in the object WindowMaterial:ComplexShade were assigned as zero in an idf, the simulation failed. The minimum value of the emissivity (Front and Back ) is zero in EnergyPlus idd.

Details

Some additional details for this issue:

  • reproduced the fatal error with the example file "CmplxGlz_Daylighting_SouthVB45deg_rev" by changing the Back Emissivity in WindowMaterial:ComplexShade to zero.

** Severe ** Window tarcog returned an error
** ~~~ ** message = "Tarcog failed to converge" During Warmup & Sizing, Environment=CHICAGO OHARE INTL AP ANN HTG 99.6% CONDNS DB, at Simulation time=01/21 00:15 - 00:30
** ~~~ ** surface name = WIN_421
** ~~~ ** construction name = CFS_GLZ_1
** Fatal ** halting because of error in tarcog
...Summary of Errors that led to program termination:
..... Reference severe error count=1
..... Last severe error=Window tarcog returned an error
************* 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: 1 Warning; 1 Severe Errors.
************* EnergyPlus Terminated--Fatal Error Detected. 1 Warning; 1 Severe Errors; Elapsed Time=00hr 00min 1.19sec

Checklist

  • Defect file added (list location of defect file here)
    CmplxGlz_Daylighting_SouthVB45deg_rev.idf
    WindowMaterial:ComplexShade,
    Shade_14_Layer, !- Name
    VenetianHorizontal, !- Layer Type
    1.016000e-003, !- Thickness {m}
    1.592276e+002, !- Conductivity {W/m-K}
    0.000000e+000, !- IR Transmittance
    0.9, !- Front Emissivity
    0, !- Back Emissivity
    0.000000e+000, !- Top Opening Multiplier
    0.000000e+000, !- Bottom Opening Multiplier
    0.000000e+000, !- Left Side Opening Multiplier
    0.000000e+000, !- Right Side Opening Multiplier
    5.000000e-002, !- Front Opening Multiplier
    0.0254, !- Slat Width {m}
    0.0201, !- Slat Spacing {m}
    0.0010, !- Slat Thickness {m}
    45.0000, !- Slat Angle {deg}
    159.2276, !- Slat Conductivity {W/m-K}
    0.0000; !- Slat Curve {m}

Energy+.idd
WindowMaterial:ComplexShade,
N4 , \field Front Emissivity
\type real
\maximum 1
\minimum 0
\default 0.84
N5 , \field Back Emissivity
\type real
\maximum 1
\minimum 0
\default 0.84

  • Ticket added to Pivotal for defect (development team task)
  • Pull request created (the pull request will have additional tasks related to reviewing changes that fix this defect)

CmplxGlz_Daylighting_SouthVB45deg_rev.txt

LipingWang added a commit to LipingWang/EnergyPlus that referenced this issue Jan 23, 2020
NREL#7698
Change the minimum requirement of the emissivity (Front and Back ) to be greater than zero rather than zero in Energy+.idd.in.
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