[Radiance-general] Radiance-general Digest, Vol 83, Issue 23

[Tim Metcalfe]

I have the ies file for an electric lightsource how do I put it into ecotect to use it or convert it to rad file?
Any help would be great

Tim Metcalfe
Kalwall Corporation
Daylight Modeling Group
1111 Candia Road
Manchester, N.H. 03105
1(800)258-9777 X4483
  Please consider your environmental responsibility before printing this e-mail

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Today's Topics:

   1. trans material file (Tim Metcalfe)
   2.  stadium light (was: trans material file) (Lars O. Grobe)
   3. Stadium light [was: trans material file] (Thomas Bleicher)
   4. Re: Stadium light [was: trans material file]
      (Guglielmetti, Robert)


----------------------------------------------------------------------

Message: 1
Date: Mon, 31 Jan 2011 06:41:18 -0500
From: Tim Metcalfe <tmetcalfe at kalwall.com>
To: "radiance-general at radiance-online.org"
        <radiance-general at radiance-online.org>
Subject: [Radiance-general] trans material file
Message-ID:
        <31A1F95173EDC043A63B0B06D158CE074414B1CF7D at NTEXCHAN.kellercomp.local>
Content-Type: text/plain; charset="us-ascii"

Hello all,
I am looking to write a file to import in Ecotect for a 75 fc electric stadium light.
Since electric lights are not my usual I am at a loss. Any suggestions?

Tim Metcalfe
Kalwall Corporation
Daylight Modeling Group
1111 Candia Road
Manchester, N.H. 03105
1(800)258-9777 X4483
P  Please consider your environmental responsibility before printing this e-mail


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Message: 2
Date: Mon, 31 Jan 2011 13:01:10 +0100
From: "Lars O. Grobe" <grobe at gmx.net>
To: Radiance general discussion <radiance-general at radiance-online.org>
Subject: [Radiance-general]  stadium light (was: trans material file)
Message-ID: <1296475270.6067.20.camel at lars-laptop>
Content-Type: text/plain; charset="UTF-8"

Hi Tim!

> I am looking to write a file to import in Ecotect for a 75 fc electric
> stadium light.

What information on that stadium light do you have? Do you have a
candela distribution (either as a print-out or as an IES or Eulumdat
file)?

Cheers, Lars.

BTW I changed the subject line, I guess this thread is not about trans
material questions.




------------------------------

Message: 3
Date: Mon, 31 Jan 2011 08:31:30 -0500
From: Thomas Bleicher <tbleicher at googlemail.com>
To: Radiance general discussion <radiance-general at radiance-online.org>
Subject: [Radiance-general] Stadium light [was: trans material file]
Message-ID:
        <AANLkTinzABtdyfBCfxrobicBttxdrTxg7uDgQmvCYnRd at mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1

On Mon, Jan 31, 2011 at 6:41 AM, Tim Metcalfe <tmetcalfe at kalwall.com> wrote:
> Hello all,
>
> I am looking to write a file to import in Ecotect for a 75 fc electric
> stadium light.
>
> Since electric lights are not my usual I am at a loss. Any suggestions?

Tim. I hope you are looking just for a way to import distribution data
into Ecotect.

In that case, IES is your friend. IIRC you define it as a type of
material in Ecotect. If you go through the materials you should find
some examples for "light materials" which should get you going.

If you want to roll your own IES file ...

Are you sure about this? If you have a fitting that's safety-tested
enough to go in a stadium you should be able to get an IES file. If
not I would still look for a distribution file of a similar fitting
before I start to hack together my own IES file.

If you really want to dive into it I recommend "Thinking
Photometrically (II)" by Ian Ashdown as first start:

http://www.dial.de/CMS/German/Articles/Licht/Service/Downloads/Thinking_Photometrically_II.pdf

Good luck,
Thomas



------------------------------

Message: 4
Date: Mon, 31 Jan 2011 09:53:26 -0700
From: "Guglielmetti, Robert" <Robert.Guglielmetti at nrel.gov>
To: Radiance general discussion <radiance-general at radiance-online.org>
Subject: Re: [Radiance-general] Stadium light [was: trans material
        file]
Message-ID: <C96C35E7.30AB%robert.guglielmetti at nrel.gov>
Content-Type: text/plain; charset="us-ascii"

I don't think it's all that difficult to create an IES file from scratch
(assuming one has a proper test report and either IES LM-63 or Ian's great
paper that Thomas cites below). Lighting Analysts has a nice piece of
software called "Photometric Toolbox" that guides you through the process
of generating your own IES file as well. But again, this assumes you have
a photometric test report with all the candela values in hand. If you
don't have that, Thomas' suggestion of trying to find a similar product
that has been tested is the way to go.

Rob Guglielmetti  IESNA, LEED AP
Commercial Buildings Research Group
National Renewable Energy Laboratory
1617 Cole Blvd MS:RSF202
Golden, CO 80401
T. 303.275.4319
F. 303.630.2055
E. robert.guglielmetti at nrel.gov





On 1/31/11 6:31 AM, "Thomas Bleicher" <tbleicher at googlemail.com> wrote:

>On Mon, Jan 31, 2011 at 6:41 AM, Tim Metcalfe <tmetcalfe at kalwall.com>
>wrote:
>> Hello all,
>>
>> I am looking to write a file to import in Ecotect for a 75 fc electric
>> stadium light.
>>
>> Since electric lights are not my usual I am at a loss. Any suggestions?
>
>Tim. I hope you are looking just for a way to import distribution data
>into Ecotect.
>
>In that case, IES is your friend. IIRC you define it as a type of
>material in Ecotect. If you go through the materials you should find
>some examples for "light materials" which should get you going.
>
>If you want to roll your own IES file ...
>
>Are you sure about this? If you have a fitting that's safety-tested
>enough to go in a stadium you should be able to get an IES file. If
>not I would still look for a distribution file of a similar fitting
>before I start to hack together my own IES file.
>
>If you really want to dive into it I recommend "Thinking
>Photometrically (II)" by Ian Ashdown as first start:
>
>http://www.dial.de/CMS/German/Articles/Licht/Service/Downloads/Thinking_Ph
>otometrically_II.pdf
>
>Good luck,
>Thomas
>
>_______________________________________________
>Radiance-general mailing list
>Radiance-general at radiance-online.org
>http://www.radiance-online.org/mailman/listinfo/radiance-general




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End of Radiance-general Digest, Vol 83, Issue 23
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