Re: [EnergyPlus_Support] Daylighting

[Peter G Loutzenhiser <post@xxxxxxxxxxx>]

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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