Hi, Linda
I think the confusion is in the prompt message, which is not the EPlus original.
One can run simulation for sizing periods using designDay objects with weather file set to "none". The designDay objects in the .ddy files are not used for simulation. There are also some "specialDays" defined in some .epw files.
=========================
A4, \field Run Simulation for Sizing Periods
A5; \field Run Simulation for Weather File Run Periods
================================
These are from the .idd file.
Using "Yes,!- Do the design day calculation" as A4 field prompt line implies that only design day object is used for that field, and sizing is not mentioned. The difference between the weather file run and sizing run is now not clear.
I realize this could be a problem for the third party programer to correct.
Dr. Li
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
From: linda@xxxxxxxxxxxxxx
Date: Thu, 1 Sep 2011 05:31:58 -0600
Subject: Re: [EnergyPlus_Support] Re: How to run DesignDay simulations - Summer and Winter
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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:
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The group web site is:
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EnergyPlus Documentation is searchable. Open EPlusMainMenu.pdf under the Documentation link and press the "search" button.
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I think the confusion is in the prompt message, which is not the EPlus original.
One can run simulation for sizing periods using designDay objects with weather file set to "none". The designDay objects in the .ddy files are not used for simulation. There are also some "specialDays" defined in some .epw files.
=========================
A4, \field Run Simulation for Sizing Periods
A5; \field Run Simulation for Weather File Run Periods
================================
These are from the .idd file.
Using "Yes,!- Do the design day calculation" as A4 field prompt line implies that only design day object is used for that field, and sizing is not mentioned. The difference between the weather file run and sizing run is now not clear.
I realize this could be a problem for the third party programer to correct.
Dr. Li
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
From: linda@xxxxxxxxxxxxxx
Date: Thu, 1 Sep 2011 05:31:58 -0600
Subject: Re: [EnergyPlus_Support] Re: How to run DesignDay simulations - Summer and Winter
No, it is not correct.
At 01:18 AM 9/1/2011, Nico G wrote:
It will only run the periods you have specified in RunPeriod objects.
It will use the SizingPeriod:* objects to determine sizing but will not "run" them (and produce simulation results). There are SizingPeriod objects that will select days from the weather file.
If you choose this, then it will "run" the SizingPeriod:* objects in your input file and produce simulation results.
At 01:18 AM 9/1/2011, Nico G wrote:
If I choose:
Yes; !- Do the weather file calculation
I understand that E+ will run all the desing days in the EPW file, besides a annual simulation (or period).
It will only run the periods you have specified in RunPeriod objects.
In this case, if I also have chosen:
Yes, !- Do the zone sizing calculation
Yes, !- Do the system sizing calculation
Yes, !- Do the plant sizing calculation
E+ also will run my own desing days defined in the IDF file.
For that, if my own design days in the IDF are the same that the design days in the weather file, E+ is simulating several times the same days.
It will use the SizingPeriod:* objects to determine sizing but will not "run" them (and produce simulation results). There are SizingPeriod objects that will select days from the weather file.
Yes, !- Do the design day calculation
If you choose this, then it will "run" the SizingPeriod:* objects in your input file and produce simulation results.
__._,_.___
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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