[TRNSYS-users] TRNSYS help

[David BRADLEY]

Prashant,


>
> I am a beginner in the TRNSYS and would be grateful if you help me on 
> following things:
>
>     * How to convert energy plus weather data (.epw) file to TRNSYS
>       type (.tm2) 109 format? Is there a small tool/software available
>       for that? Is there a specific tool (excluding
>       notepad/wordpad) available to edit .tm2 file, so that I can
>       easily copy & paste the weather data?
>
TRNSYS can read energyplus weather files as well as TMY2 (also various 
other formats as well). If you are using Trnsys16 you can read 
energyplus weather files using Type89 and process the radiation data 
with Type16. If you are using Trnsys17 then Type15 both reads and 
processes E+ weather files.

*.tm2 files are text. If you obtain the file format (showing which 
columns in the data file pretain to which values) then you can open the 
files in Excel and adjust the column delimiters so that editing is easy. 
The TMY2 file format is described in NREL's TMY2 documentation: 
http://rredc.nrel.gov/solar/old_data/nsrdb/tmy2/ (click on the 
"documentation" link.
>
>     * Does TRNSYS gives the end-use energy consumption data e.g.
>       annual/monthly/daily kWh consumed for lighting, equipment,
>       cooling, heating, etc.? I could not find it in the output list
>       of TRNBuild.
>
Type56's outputs are more generally energy balance outputs (total 
convective gains to the airnodes of a zone, radiation gains from a 
particular surface). When I need to give the gains from lighting, 
equipment, etc. to the space and I also care about the power use of 
those things then typically, I set up the Type56 gains as inputs to the 
model and I write equations in the TRNSYS Studio to set the values of 
the gains at any given point in time. Those same equations also give me 
the energy consumption of those devices.
>
>     * How to define seasonal schedules e.g. equipment runs 8-10am in
>       the months April-August?
>
Again it is easiest to do this outside of Type56 and then pass the 
appropriate values in to Type56 via an input. There are various schedule 
components available in the add-on TESS Libraries Applications Library. 
You can also set up a Type14 forcing function for scheduling in standard 
TRNSYS.
>
>     * How to save schedules in the user library so that they can be
>       used later for other models?
>
TRNBuild does not currently have a method for saving schedules for reuse 
in other projects.

Kind regards,
  david

-- 
***************************
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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