[TRNSYS-users] TMY-3

[David BRADLEY]

Fred,
   There are actually a few issues here. First, both TMY2 and TMY3 are 
file formats. The files themselves are simply text files and can be 
opened and edited with notepad, Excel, etc. The definition of the format 
(what data appears in which column of the data file) is publicly available:

for TMY2: http://rredc.nrel.gov/solar/pubs/tmy2/data.html
for TMY3: http://www.nrel.gov/docs/fy08osti/43156.pdf

   Both the TMY2 and TMY3 formats contain fields for global illuminance. 
Meteonorm is able to save and export weather files in the TMY2 format. 
However, I do not know if it fills in the global illuminanace fields 
with data or if it just leaves those fields set with some default code 
to indicate that no data is available. If either a TMY2 or TMY3 file 
contains data in the global illuminance fields then TRNSYS Type15 will 
read and provide that data as output 44 (if you only have one surface on 
which Type15 is computing solar radiation).

Kind regards,
  David


On 3/29/2015 4:01 PM, frédéry lavoye wrote:
> Dear TRnsys users,
>
> I would like to know how generate TMY-3 weather file ?
> I can't manage it with the version of meteonorm I have...
> I need Global illuminance Output for simulations and I think that only 
> TMY-3 weather file permit it.
>
> Thanks in advance for your answer.
>
> Regards,
> Fred.
>
>
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-- 
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI  53703 USA

P:+1.608.274.2577
F:+1.608.278.1475
d.bradley at tess-inc.com

http://www.tess-inc.com
http://www.trnsys.com

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