Re: [EnergyPlus_Support] Location dependent inputs

Dru, The issue with your way is as follows; Lets say the user wants to run a parametric study in JE+ , or using EP launch. With weatherfilecondition type they can use one or many IDF and or IMF's with as many weather files as they want right away without any modification of the IDF/IMF, where the other option requires a new IMF or IDF for each location. Correct me if I am wrong but the mistakes made by attempting to track changes across a large group of files might just be less accurate than weatherfileconditiontype.. My use was to gauge best perscripive methods for installing PCM's, so I was not really looking for absolutes but rather was looking for ratios. Weatherfileconditiontype is especially useful for attaining general ratios, but not as useful for exact sizing of HVAC systems- but E+ is not really a load sizing tool- even tho it can/does load sizing very well. I guess it just depends what you studying, or if you are looking to do preliminary modeling at first and then detailed (with design days) later..(such as was likely the intention of the object)

All the best- and Dru-keep up the great work on AECOsim

Jeremiah D. Crossett | Senior Analyst | Phase Change Energy Solutions

120 E. Pritchard St. | Asheboro, NC 27203 | Mobile 503-688-8951

www.phasechange.com

On Tue, Sep 4, 2012 at 5:00 PM, Jeremiah Crossett <jcrossett@xxxxxxxxxxxxxxx> wrote:

When running a many locations it is easiest to use the object called:
"sizing period weather file condition type"

Name Summer Extreme Weather File Winter Extreme Weather File

Period Selection SummerExtreme WinterExtreme

Day of Week for Start Day Monday Monday

Use Weather File Daylight Saving Period Yes Yes

Use Weather File Rain and Snow Indicators Yes Yes

Jeremiah D. Crossett | Senior Analyst | Phase Change Energy Solutions
120 E. Pritchard St. | Asheboro, NC 27203 | Mobile 503-688-8951

www.phasechange.com

On Tue, Sep 4, 2012 at 4:33 PM, cmcdona037 <mcdonald.cliff@xxxxxxxxx> wrote:

Hello,

I'm new at EnergyPlus, but do have some experience with DOE-2.. I'm trying to take the PNNL prototype models and run the for some different locations. Since the HVAC and Plant equipment is set to autosize, I was hoping that I would only have to change the weather file and I'd be good to go. However, after some digging it does seem that there are a few inputs I have to change in the IDF, mainly the sizingperiod:designdays. Are there any other inputs i need to change to get an accurate run in different locations? Is there a general procedure I can follow to update the model for a different location?

thanks,

-cliff.

Name	Summer Extreme Weather File	Winter Extreme Weather File
Period Selection	SummerExtreme	WinterExtreme
Day of Week for Start Day	Monday	Monday
Use Weather File Daylight Saving Period	Yes	Yes
Use Weather File Rain and Snow Indicators	Yes	Yes