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Re: [EnergyPlus_Support] Daylighting
Peter,
I believe the drawing tool that Mike was referring to is DrawBDL, developed
by yours truly. For more information, please see www.drawbdl.com. The
EnergyPlus *.idf reader is still in Beta form and currently does not read
daylight reference points. This will be added shortly as a outgrowth of this
e-mail exchange.
Joe Huang
----- Original Message -----
From: "Peter G Loutzenhiser" <post@xxxxxxxxxxx>
To: <EnergyPlus_Support@xxxxxxxxxxxxxxx>
Sent: Monday, November 03, 2003 6:55 PM
Subject: Re: [EnergyPlus_Support] Daylighting
> At 08:51 PM 11/3/2003, Peter G Loutzenhiser wrote:
> >Mike:
> >
> >Do you know the specific name of the drawing tool you were describing for
> >DOE2.1E? Also is it possible to locate the reference point in the output
> >file for E+?
>
>
>
>
> >Thanks
> >Peter
> >
> >At 03:41 PM 11/3/2003, you wrote:
> >>The problem is in the DOE-2 input. The DOE-2 and EnergyPlus
> >>daylighting reference points appear to be in the same place at first
> >>glance. In both programs they are relative to the zone origin and
> >>the values are equivalent in the two input files. However, the DOE-2
> >>input has zone origins of 0,0,0 and the EnergyPlus input does not.
> >>It is a very subtle difference between the two runs - it took two
> >>sets of eyes to find the problem at this end.
> >>
> >>Since your DOE-2 file is essentially set up in global coordinates
> >>(with all zone origins at 0,0,0), you will need to reposition the
> >>lighting reference points in DOE-2 to be consistent. There is a
> >>handy drawing tool available for DOE-2 which shows the daylighting
> >>reference points and revealed the problem.
> >>
> >>Mike
> >>
> >>
> >>
> >>On 21 Oct 2003, at 14:51, Michael J. Witte wrote:
> >>
> >> > My apologies for the delayed response. We have not had any similar
> >> > complaints. Are you sure that you daylighting reference points are
> >> > consistent? Remember that daylighting reference points in EnergyPlus
> >> > are always relative to the zone origin. If you cannot resolve this,
> >> > please send us more details including inputs and outputs. You may
> >> > post files to the yahoo group files area or send as a zipped
> >> > attachment to energyplus-support@xxxxxxxx
> >> >
> >> > Mike
> >> >
> >> > On 13 Oct 2003, at 21:23, Peter G Loutzenhiser wrote:
> >> >
> >> > > I am running an Energy Plus Model against and validated DOE2.1E
> >> > > model.
> >> > > For the daylight component of the simulation, I am hourly
> >> > > illuminance
> >> > > values for the Energy Plus that 4 to 10 times greater than what I
am
> >> > > seeing with DOE2.1E. Can this be right? I am using the same
> >> > > weather file and the same Window 5.1 file for both simulations.
Has
> >> > > anybody seen results like this. I have checked over my input and
am
> >> > > semi-sure that it is correct. Any suggestions?
> >> > >
> >> > >
> >> > > Best Regards,
> >> > >
> >> > > Peter Loutzenhiser
> >> > > post@xxxxxxxxxxx
> >> > > PhD Student
> >> > > Mechanical Engineering
> >> > > Iowa State University
> >> > > Office: 515-294-0365
> >> > >
> >
> >Best Regards,
> >
> >Peter Loutzenhiser
> >post@xxxxxxxxxxx
> >PhD Student
> >Mechanical Engineering
> >Iowa State University
> >Office: 515-294-0365
>
> Best Regards,
>
> Peter Loutzenhiser
> post@xxxxxxxxxxx
> PhD Student
> Mechanical Engineering
> Iowa State University
> Office: 515-294-0365
>
>
>
>
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