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Re: [EnergyPlus_Support] Re: representative days for simulation





Hi Ipek,
You can "limit the RunPeriod to only one day per season, 4 in total" by populating the RunPeriod object for the specific dates that you are interested in.
At the following example, I have simulated only 4 days (12/21-winter solstice, 3/20-spring equinox, 6/20-summer solstice, 9/21-autumn equinox).
RunPeriod,
    datarun1,           !- Name
    12,                       !- Begin Month -winter solstice date-
    21,                       !- Begin Day of Month
    12,                       !- End Month
    21,                       !- End Day of Month
    UseWeatherFile,!- Day of Week for Start Day
    No,                     !- Use Weather File Holidays and Special Days
    No,                     !- Use Weather File Daylight Saving Period
    Yes,                    !- Apply Weekend Holiday Rule
    Yes,                    !- Use Weather File Rain Indicators
    Yes;                    !- Use Weather File Snow Indicators

RunPeriod,
    datarun2,           !- Name
    3,                       !- Begin Month -spring equinox date-
    20,                       !- Begin Day of Month
    3,                       !- End Month
    20,                       !- End Day of Month
    UseWeatherFile,!- Day of Week for Start Day
    No,                     !- Use Weather File Holidays and Special Days
    No,                     !- Use Weather File Daylight Saving Period
    Yes,                    !- Apply Weekend Holiday Rule
    Yes,                    !- Use Weather File Rain Indicators
    Yes;                    !- Use Weather File Snow Indicators

RunPeriod,
    datarun3,           !- Name
    6,                       !- Begin Month -summer solstice date-
    20,                       !- Begin Day of Month
    6,                       !- End Month
    20,                       !- End Day of Month
    UseWeatherFile,!- Day of Week for Start Day
    No,                     !- Use Weather File Holidays and Special Days
    No,                     !- Use Weather File Daylight Saving Period
    Yes,                    !- Apply Weekend Holiday Rule
    Yes,                    !- Use Weather File Rain Indicators
    Yes;                    !- Use Weather File Snow Indicators

RunPeriod,
    datarun4,           !- Name
    9,                       !- Begin Month -autumn equinox date-
    21,                       !- Begin Day of Month
    9,                       !- End Month
    21,                       !- End Day of Month
    UseWeatherFile,!- Day of Week for Start Day
    No,                     !- Use Weather File Holidays and Special Days
    No,                     !- Use Weather File Daylight Saving Period
    Yes,                    !- Apply Weekend Holiday Rule
    Yes,                    !- Use Weather File Rain Indicators
    Yes;                    !- Use Weather File Snow Indicators

Best,
Alex



On Wednesday, January 13, 2016 3:46 PM, "Linda Lawrie linda@xxxxxxxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:


 
The help desk:

Primary EnergyPlus support is found at:
http://energyplus.helpserve.com or send a message to energyplus-support@xxxxxxxx



At 01:29 PM 1/13/2016, Ipek Gursel Dino ipekgursel@xxxxxxxxx [EnergyPlus_Support] wrote:


Linda, thanks for the help. Where can I reach this place that you mentioned? Is it a website?

On Wed, Jan 13, 2016 at 7:15 PM, Linda Lawrie linda@xxxxxxxxxxxxxx [EnergyPlus_Support] < EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:
Ã? 

Try here:

Try the helpdesk:Ã?  View Knowledge Base and look at the Downloads section.


At 09:50 AM 1/13/2016, Ipek Gursel Dino ipekgursel@xxxxxxxxx [EnergyPlus_Support] wrote:


Where can i fine these days?

On Wednesday, January 13, 2016, Linda Lawrie linda@xxxxxxxxxxxxxx [EnergyPlus_Support] < EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:
Ã??Ã? 
You could choose the monthly design days for your location.
Not perhaps typical but representative.
At 02:42 AM 1/13/2016, Ipek Gursel Dino ipekgursel@xxxxxxxxx [EnergyPlus_Support] wrote:


but which custom dates? how can I select the typical days of a season in terms of temperature and sun availability?
On Wed, Jan 13, 2016 at 8:59 AM, Jean Marais jeannieboef@xxxxxxxxx [EnergyPlus_Support] < EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:
Ã?Æ??Ã??Ã? 
simulate for custom days or design days.
2016-01-13 1:26 GMT+01:00 Ipek Gursel Dino ipekgursel@xxxxxxxxx [EnergyPlus_Support] < EnergyPlus_Support@xxxxxxxxxxxxxxx>:
Ã?Æ??Ã??Ã? 
Hi,
I am doing a comparative study that compares a number of buildings with varying window sizes. I would like to reduce the computation time by limiting the RunPeriod to only one day per season, 4 in total. what is the best way to select these days? I am also calculating daylighting, so any random day runs the risk of being not representative of the whole season. for example a selected day can be an exceptionally sunny day in cold winter. any ideas would be greatly appreciated...
Ipek














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Posted by: Alex Vlachokostas <alexvlachokostas@xxxxxxxxx>


Primary EnergyPlus support is found at:
http://energyplus.helpserve.com or send a message to energyplus-support@xxxxxxxx

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 currently allowed but be mindful that not everyone has a high speed connection.  Limit attachments to small files.

EnergyPlus Documentation is searchable.  Open EPlusMainMenu.pdf under the Documentation link and press the "search" button.




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