Re: [EnergyPlus_Support] daily temperature range

[Linda Lawrie <linda@xxxxxxxxxx>]

At 01:49 PM 1/2/2005, ogocer@xxxxxxxxxxxxxx wrote:
>I made a simulation for a design day and i asked for dry bulb outside
>temperature. In output reports it gave me same temperature for all hours
>(that i specified in maximum dry bulb temperature)  But daily temperature
>range was zero. Then i changed daily temperature range by finding the
>difference between maximum and minimum temperatures from Istanbul weather
>data for the design day. (7 - 5 = 2 centigrate degree)
>and in output reports i saw changes in temperatures. am i right in doing
>that process?

Yes.  The default is no temperature range -- which could be good for Winter 
days but not usually for summer.


>But i didn't define dry bulb temperature range modifier type. Is it
>necessary to define it?
>thanks for all.
>

No, by default it will be "default multipliers" as described under the 
DesignDay in the Input Output reference.

   A5 , \field Dry-Bulb Temperature Range Modifier Type
        \note Type of modifier to the dry-bulb temperature calculated for 
the time step
        \type choice
        \key Multiplier
        \key Delta
        \default Default Multipliers
   A6 ; \field Dry-Bulb Temperature Range Modifier Schedule
        \type object-list
        \object-list DayScheduleNames
        \note Only used when previous field is "multiplier" or "delta".
        \note For type "multiplier"  the hour/time interval values should 
specify
        \note range from 0.0 to 1.0 of the maximum temperature.
        \note For type "delta" the values should specify a number to be 
subtracted
        \note from dry bulb maximum temperature for each timestep in the day.
        \note Note that numbers in the delta schedules cannot be negative 
as that
        \note would result in a higher maximum than the maximum previously 
specified.

Note that there is a design day definition for Istanbul in the World Design 
Days -- MacroDataSets folder.  If you don't want to use the macro defines, 
you can just cut and past from the IMF file there.


Linda

EnergyPlus WebSite: http://www.energyplus.gov
Owner: EnergyPlus_Support list
Member: EnergyPlus Development Team



[Non-text portions of this message have been removed]



The primary EnergyPlus web site is found at:
http://www.energyplus.gov

The group web site is:
http://groups.yahoo.com/group/EnergyPlus_Support/

Attachments are not allowed -- please post any files to the appropriate folder in the Files area of the Support Web Site.
 
Yahoo! Groups Links

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/EnergyPlus_Support/

<*> To unsubscribe from this group, send an email to:
    EnergyPlus_Support-unsubscribe@xxxxxxxxxxxxxxx

<*> Your use of Yahoo! Groups is subject to:
    http://docs.yahoo.com/info/terms/