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asked 2019-08-29 20:08:44 -0600

mldichter's avatar

White Box DDY files have multiple numbers per field

I'm finding these lines in the DesignDay fields

0.4  0.5, !- Wind Speed {m/s} design conditions vs. traditional 6.71 m/s (15 mph)
16.6  15.5,      !- Wetbulb at Maximum Dry-Bulb {C}

As you can see, there are two numbers specified, which EnergyPlus complains about. Does anyone know what "traditional" means? I think the left number is recommended by White Box and the right number is outdated, but that's just a guess.

click to hide/show revision 2
retagged

updated 2019-08-30 07:01:43 -0600

Aaron Boranian's avatar

White Box DDY files have multiple numbers per field

I'm finding these lines in the DesignDay fields

0.4  0.5, !- Wind Speed {m/s} design conditions vs. traditional 6.71 m/s (15 mph)
16.6  15.5,      !- Wetbulb at Maximum Dry-Bulb {C}

As you can see, there are two numbers specified, which EnergyPlus complains about. Does anyone know what "traditional" means? I think the left number is recommended by White Box and the right number is outdated, but that's just a guess.

White Box DDY files have multiple numbers per field

I'm finding these lines in the DesignDay fields

0.4  0.5, !- Wind Speed {m/s} design conditions vs. traditional 6.71 m/s (15 mph)
16.6  15.5,      !- Wetbulb at Maximum Dry-Bulb {C}

As you can see, there are two numbers specified, which EnergyPlus complains about. Does anyone know what "traditional" means? I think the left number is recommended by White Box and the right number is outdated, but that's just a guess.

POST SCRIPT
From SACRAMENTO-EXECUTIVE_724830_CZ2010.ddy which was downloaded more than a year ago.

SizingPeriod:DesignDay,
  SACRAMENTO-EXECUTIVE-ARP Ann Htg 99.6% Condns DB,     !- Name
          1,      !- Month
         21,      !- Day of Month
  WinterDesignDay,!- Day Type
       -0.2,      !- Maximum Dry-Bulb Temperature {C}
        0.0,      !- Daily Dry-Bulb Temperature Range {C}
 DefaultMultipliers, !- Dry-Bulb Temperature Range Modifier Type
           ,      !- Dry-Bulb Temperature Range Modifier Schedule Name
    Wetbulb,      !- Humidity Condition Type
       -0.2,      !- Wetbulb at Maximum Dry-Bulb {C}
           ,      !- Humidity Indicating Day Schedule Name
           ,      !- Humidity Ratio at Maximum Dry-Bulb {kgWater/kgDryAir}
           ,      !- Enthalpy at Maximum Dry-Bulb {J/kg}
           ,      !- Daily Wet-Bulb Temperature Range {deltaC}
     101277,      !- Barometric Pressure {Pa}
        0.4  0.5,      !- Wind Speed {m/s} design conditions vs. traditional 6.71 m/s (15 mph)
         90,      !- Wind Direction {Degrees; N=0, S=180}
         No,      !- Rain {Yes/No}
         No,      !- Snow on ground {Yes/No}
         No,      !- Daylight Savings Time Indicator
  ASHRAEClearSky, !- Solar Model Indicator
           ,      !- Beam Solar Day Schedule Name
           ,      !- Diffuse Solar Day Schedule Name
           ,      !- ASHRAE Clear Sky Optical Depth for Beam Irradiance (taub)
           ,      !- ASHRAE Clear Sky Optical Depth for Diffuse Irradiance (taud)
       0.00;      !- Clearness {0.0 to 1.1}

SizingPeriod:DesignDay,
  SACRAMENTO-EXECUTIVE-ARP Ann Clg 0.4% Condns DB=>MCWB,     !- Name
          7,      !- Month
         21,      !- Day of Month
  SummerDesignDay,!- Day Type
       37.9,      !- Maximum Dry-Bulb Temperature {C}
       17.4,      !- Daily Dry-Bulb Temperature Range {C}
 DefaultMultipliers, !- Dry-Bulb Temperature Range Modifier Type
           ,      !- Dry-Bulb Temperature Range Modifier Schedule Name
    Wetbulb,      !- Humidity Condition Type
       21.1  21.1,      !- Wetbulb at Maximum Dry-Bulb {C}
           ,      !- Humidity Indicating Day Schedule Name
           ,      !- Humidity Ratio at Maximum Dry-Bulb {kgWater/kgDryAir}
           ,      !- Enthalpy at Maximum Dry-Bulb {J/kg}
           ,      !- Daily Wet-Bulb Temperature Range {deltaC}
     101277,      !- Barometric Pressure {Pa}
        3.4  3.4,      !- Wind Speed {m/s} design conditions vs. traditional 3.35 m/s (7 mph)
        270,      !- Wind Direction {Degrees; N=0, S=180}
         No,      !- Rain {Yes/No}
         No,      !- Snow on ground {Yes/No}
         No,      !- Daylight Savings Time Indicator
       ASHRAETau, !- Solar Model Indicator
           ,      !- Beam Solar Day Schedule Name
           ,      !- Diffuse Solar Day Schedule Name
      0.382,      !- ASHRAE Clear Sky Optical Depth for Beam Irradiance (taub)
      2.325;      !- ASHRAE Clear Sky Optical Depth for Diffuse Irradiance (taud)

SizingPeriod:DesignDay,
  SACRAMENTO-EXECUTIVE-ARP Ann Clg 1% Condns DB=>MCWB,     !- Name
          7,      !- Month
         21,      !- Day of Month
  SummerDesignDay,!- Day Type
       36.2,      !- Maximum Dry-Bulb Temperature {C}
       17.4,      !- Daily Dry-Bulb Temperature Range {C}
 DefaultMultipliers, !- Dry-Bulb Temperature Range Modifier Type
           ,      !- Dry-Bulb Temperature Range Modifier Schedule Name
    Wetbulb,      !- Humidity Condition Type
       20.7  20.4,      !- Wetbulb at Maximum Dry-Bulb {C}
           ,      !- Humidity Indicating Day Schedule Name
           ,      !- Humidity Ratio at Maximum Dry-Bulb {kgWater/kgDryAir}
           ,      !- Enthalpy at Maximum Dry-Bulb {J/kg}
           ,      !- Daily Wet-Bulb Temperature Range {deltaC}
     101277,      !- Barometric Pressure {Pa}
        3.4,      !- Wind Speed {m/s} design conditions vs. traditional 3.35 m/s (7 mph)
        270,      !- Wind Direction {Degrees; N=0, S=180}
         No,      !- Rain {Yes/No}
         No,      !- Snow on ground {Yes/No}
         No,      !- Daylight Savings Time Indicator
       ASHRAETau, !- Solar Model Indicator
           ,      !- Beam Solar Day Schedule Name
           ,      !- Diffuse Solar Day Schedule Name
      0.382,      !- ASHRAE Clear Sky Optical Depth for Beam Irradiance (taub)
      2.325;      !- ASHRAE Clear Sky Optical Depth for Diffuse Irradiance (taud)
click to hide/show revision 4
retagged

updated 2019-11-28 04:26:54 -0600

Aaron Boranian's avatar

White Box DDY files have multiple numbers per field

I'm finding these lines in the DesignDay fields

0.4  0.5, !- Wind Speed {m/s} design conditions vs. traditional 6.71 m/s (15 mph)
16.6  15.5,      !- Wetbulb at Maximum Dry-Bulb {C}

As you can see, there are two numbers specified, which EnergyPlus complains about. Does anyone know what "traditional" means? I think the left number is recommended by White Box and the right number is outdated, but that's just a guess.

POST SCRIPT
From SACRAMENTO-EXECUTIVE_724830_CZ2010.ddy which was downloaded more than a year ago.

SizingPeriod:DesignDay,
  SACRAMENTO-EXECUTIVE-ARP Ann Htg 99.6% Condns DB,     !- Name
          1,      !- Month
         21,      !- Day of Month
  WinterDesignDay,!- Day Type
       -0.2,      !- Maximum Dry-Bulb Temperature {C}
        0.0,      !- Daily Dry-Bulb Temperature Range {C}
 DefaultMultipliers, !- Dry-Bulb Temperature Range Modifier Type
           ,      !- Dry-Bulb Temperature Range Modifier Schedule Name
    Wetbulb,      !- Humidity Condition Type
       -0.2,      !- Wetbulb at Maximum Dry-Bulb {C}
           ,      !- Humidity Indicating Day Schedule Name
           ,      !- Humidity Ratio at Maximum Dry-Bulb {kgWater/kgDryAir}
           ,      !- Enthalpy at Maximum Dry-Bulb {J/kg}
           ,      !- Daily Wet-Bulb Temperature Range {deltaC}
     101277,      !- Barometric Pressure {Pa}
        0.4  0.5,      !- Wind Speed {m/s} design conditions vs. traditional 6.71 m/s (15 mph)
         90,      !- Wind Direction {Degrees; N=0, S=180}
         No,      !- Rain {Yes/No}
         No,      !- Snow on ground {Yes/No}
         No,      !- Daylight Savings Time Indicator
  ASHRAEClearSky, !- Solar Model Indicator
           ,      !- Beam Solar Day Schedule Name
           ,      !- Diffuse Solar Day Schedule Name
           ,      !- ASHRAE Clear Sky Optical Depth for Beam Irradiance (taub)
           ,      !- ASHRAE Clear Sky Optical Depth for Diffuse Irradiance (taud)
       0.00;      !- Clearness {0.0 to 1.1}

SizingPeriod:DesignDay,
  SACRAMENTO-EXECUTIVE-ARP Ann Clg 0.4% Condns DB=>MCWB,     !- Name
          7,      !- Month
         21,      !- Day of Month
  SummerDesignDay,!- Day Type
       37.9,      !- Maximum Dry-Bulb Temperature {C}
       17.4,      !- Daily Dry-Bulb Temperature Range {C}
 DefaultMultipliers, !- Dry-Bulb Temperature Range Modifier Type
           ,      !- Dry-Bulb Temperature Range Modifier Schedule Name
    Wetbulb,      !- Humidity Condition Type
       21.1  21.1,      !- Wetbulb at Maximum Dry-Bulb {C}
           ,      !- Humidity Indicating Day Schedule Name
           ,      !- Humidity Ratio at Maximum Dry-Bulb {kgWater/kgDryAir}
           ,      !- Enthalpy at Maximum Dry-Bulb {J/kg}
           ,      !- Daily Wet-Bulb Temperature Range {deltaC}
     101277,      !- Barometric Pressure {Pa}
        3.4  3.4,      !- Wind Speed {m/s} design conditions vs. traditional 3.35 m/s (7 mph)
        270,      !- Wind Direction {Degrees; N=0, S=180}
         No,      !- Rain {Yes/No}
         No,      !- Snow on ground {Yes/No}
         No,      !- Daylight Savings Time Indicator
       ASHRAETau, !- Solar Model Indicator
           ,      !- Beam Solar Day Schedule Name
           ,      !- Diffuse Solar Day Schedule Name
      0.382,      !- ASHRAE Clear Sky Optical Depth for Beam Irradiance (taub)
      2.325;      !- ASHRAE Clear Sky Optical Depth for Diffuse Irradiance (taud)

SizingPeriod:DesignDay,
  SACRAMENTO-EXECUTIVE-ARP Ann Clg 1% Condns DB=>MCWB,     !- Name
          7,      !- Month
         21,      !- Day of Month
  SummerDesignDay,!- Day Type
       36.2,      !- Maximum Dry-Bulb Temperature {C}
       17.4,      !- Daily Dry-Bulb Temperature Range {C}
 DefaultMultipliers, !- Dry-Bulb Temperature Range Modifier Type
           ,      !- Dry-Bulb Temperature Range Modifier Schedule Name
    Wetbulb,      !- Humidity Condition Type
       20.7  20.4,      !- Wetbulb at Maximum Dry-Bulb {C}
           ,      !- Humidity Indicating Day Schedule Name
           ,      !- Humidity Ratio at Maximum Dry-Bulb {kgWater/kgDryAir}
           ,      !- Enthalpy at Maximum Dry-Bulb {J/kg}
           ,      !- Daily Wet-Bulb Temperature Range {deltaC}
     101277,      !- Barometric Pressure {Pa}
        3.4,      !- Wind Speed {m/s} design conditions vs. traditional 3.35 m/s (7 mph)
        270,      !- Wind Direction {Degrees; N=0, S=180}
         No,      !- Rain {Yes/No}
         No,      !- Snow on ground {Yes/No}
         No,      !- Daylight Savings Time Indicator
       ASHRAETau, !- Solar Model Indicator
           ,      !- Beam Solar Day Schedule Name
           ,      !- Diffuse Solar Day Schedule Name
      0.382,      !- ASHRAE Clear Sky Optical Depth for Beam Irradiance (taub)
      2.325;      !- ASHRAE Clear Sky Optical Depth for Diffuse Irradiance (taud)
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