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Re: [EnergyPlus_Support] SizingPeriod

If you use one of the weather files that come with EnergyPlus or are
on the E+ web site, there is a .DDY file which is contains the design
days for that locations (if there are design data in the ASHRAE 2009
Fundamentals for that location).  If you have a file that you have
created, the WeatherConverter (Weather Statistics and Converter) will
create a .DDY if you 'Convert' the file to EPW.

The run period is a day -- which day you can control within the
SizingPeriod:DesignDay object.  It gives EnergyPlus information for
the peak or design day for sizing HVAC equipment and systems.  For
example, page 39 of the InputOutputReference has two examples--this is
the one for cooling design:

SizingPeriod:DesignDay,
Phoenix Sky Harbor Intl Ap Ann Clg .4% Condns WB=>MDB, !- Name
7, !- Month
21, !- Day of Month
SummerDesignDay,!- Day Type
35.8, !- Maximum Dry-Bulb Temperature {C}
12, !- Daily Dry-Bulb Temperature Range {C}
DefaultMultipliers, !- Dry-Bulb Temperature Range Modifier Type
, !- Dry-Bulb Temperature Range Modifier Schedule Name
Wetbulb, !- Humidity Condition Type
24.5, !- 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}
97342., !- Barometric Pressure {Pa}
4.1, ! Wind Speed {m/s}
260, !- 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
0.588, !- ASHRAE Clear Sky Optical Depth for Beam Irradiance (taub)
1.653; !- ASHRAE Clear Sky Optical Depth for Diffuse Irradiance (taud)

Read the discussion of SizingPeriod:DesignDay in the
InputOutputReference beginning on page 33.



On Sat, Oct 27, 2012 at 2:41 PM, mohammad shar va balaaa
<mohammad_sharvabalaaa@xxxxxxxxx> wrote:
>
>
>
> what is a sizingperiod:designDay for this weather file?
> and what is the run period for that?
>
> 


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