Re: [EnergyPlus_Support] Re: modelling a dome

On Fri, Feb 18, 2011 at 3:55 PM, coy_mllr <coy_mllr@xxxxxxxxx> wrote:

Thank you all so much for your help! I now have an IDf file that I can use for modeling. This mailing list is amazing.

I am having an issue running the simulation. When I open the IDF and weather data in ep launch and try to run a simulation I don't have any results. I used the IDf editor to define all materials and simulation parameters but the only result I have available for viewing is the drawing file. What am I missing? This has to be somthing very basic that I am missing. The simulation control is set for run simulation for weather file run periods. Shouldn't this produce results?

Thanks Again!

Coy

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Karen Walkerman <kwalkerman@...> wrote:
>
> Attached is an idf file I created using OpenStudio and the method described
> in my previous post. I used an 8-sided polygon to create the dome.
>
> --
> Karen
>
> On Fri, Feb 18, 2011 at 9:15 AM, Karen Walkerman <kwalkerman@...>wrote:

>
> > To draw a dome that is appropriate for Open Studio, I would try the
> > following (outside of any EnergyPlus Zone:
> >
> > 1. Select the circle tool. Before drawing anything enter the number of
> > sides you want the circle to draw (look in the lower right hand corner, the
> > current number of sides will be listed). 8 should be sufficient.
> >
> > 2. draw a dome following the directions here:
> >
> > http://sketchup.google.com/support/bin/answer.py?hl=en&answer=39070
> >
> > 3. copy the outer face of the dome and move it away from any other
> > geometry. This will give you a dome that has only one surface.
> >
> > 4. turn hidden geometry to "on" You will see that the dome is made up of
> > a bunch of individual faces. I think that at this point you can copy and
> > paste the dome into your energyplus zone.
> >
> > 5. One thing to think about is that I don't think that the energyplus
> > geometry can recognize a face with a hole in it, so if you have a flat roof
> > with a dome in the middle, you probably want to divide the roof into two
> > sections, and then put the dome in the middle. My guess is that this is
> > what is confusing OpenStudio and creating the dome 'window'
> >
> > --
> > Karen
> >
> > On Fri, Feb 18, 2011 at 8:35 AM, Andy Tindale <
> > andy.tindale@...> wrote:
> >
> >>
> >>
> >> Coy,
> >>
> >> I appreciate that you're trying to do this in OpenStudio but if you are
> >> unable to make further progress you could consider using a DesignBuilder
> >> evaluation just to generate the dome geometry (DesignBuilder has a built in
> >> dome block type). You may then be able to import the IDF generated by DB
> >> into OpenStudio if that is your preferred modelling environment.
> >>
> >> Regards,
> >>
> >> Andy Tindale
> >> DesignBuilder Software ltd
> >> www.designbuilder.com
> >>
> >>
> >> -----Original Message-----
> >> From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:
> >> EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of Joe Huang
> >> Sent: 18 February 2011 06:57
> >> To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> >> Cc: coy_mllr
> >> Subject: Re: [EnergyPlus_Support] modelling a dome
> >>
> >> The title of your post caught my eye, because I worked on the same
> >> problem, i.e., modeling a dome, nine years ago, although I was doing it
> >> in DOE-2, rather than EnergyPlus.
> >>
> >> As far as I know, all surfaces in any building energy simulation program
> >> has to be planar, so I don't see how a pie slice would work,
> >> unless it's automatically decomposed by OpenStudio into planar polygons.
> >>
> >> What I did was to write an awk program that decomposes a hemispheric
> >> dome with a given radius into a collection of polygons. It's written up
> >> in an old DOE-2 User News article. See pp. 18-19 in
> >>
> >> http://gundog.lbl.gov/dirun/23s_o_1.pdf
> >>
> >> You would have to modify the program to output IDF instead of BDL,
> >> but the fundamental math should still work.
> >>
> >> Joe
> >>
> >> Joe Huang
> >> White Box Technologies, Inc.
> >> 346 Rheem Blvd., Suite 108D
> >> Moraga CA 94556
> >> (o) 925-388-0265
> >> (c) 510-928-2683
> >> yjhuang@...

> >> www.whiteboxtechnologies.com
> >> "Building energy simulations at your fingertips"
> >>
> >> On 2/16/2011 1:05 PM, coy_mllr wrote:
> >> > Hi, I am trying to model a large dome structure in energyplus using
> >> > openstudio. Thus far, I have been unsuccessfull. It seems openstudio has
> >> > issues identifying the dome surface as a roof. The program designates
> >> > one -pie slice- of the dome as a wall. then, when I load the idf into EP
> >> > launch and run an analysis, energyplus seems to register the -pie slice-
> >> > as an opening. Is it possible to model a dome in e-plus using open
> >> > studio? Any suggestions?
> >> >
> >> > Thank You!
> >> >
> >> > Coy
> >> >
> >> > CH2M Hill - intern
> >> > OIT Renewable Energy Engineering - student
> >> >
> >> >
> >>
> >> ------------------------------------
> >>
> >> Primary EnergyPlus support is found at:
> >> http://energyplus.helpserve.com or send a message to
> >> energyplus-support@...

> >>
> >> 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.
> >> Yahoo! Groups Links
> >>
> >>
> >>
> >
> >
>