[TRNSYS-users] Converting data reader to TRNSYS 16

[David Bradley]

Steve,
  If you are reading a standard TMY file (either TMY, TMY2, or the 
old TRNSYS TMY format), I would suggest that you replace Type9 with 
Type15. Type15 combines the functionality of Type89 (which reads 
standard format files such as TMY2 and TRNSYS TMY) with Type16 and 
Type69. It avoids some of the problems of setting Type16 parameters 
correctly and of making connections between those components. Also, 
be sure that you changed the start time of your simulation. The 
TRNSYS 15 convention was that the start time was the hour of the year 
at the end of the first time step (although often you had to tweak 
this around to get it to actually work correctly). In TRNSYS 16, the 
start time is the hour of the year at the beginning of the first time 
step. I hope that helps.
David


At 12:20 5/28/2007, Steven Long wrote:
>Hi:
>
>I'm converting a series of decks to TRNSYS 16.  When I run the decks 
>using TRNSYS 16 source code with the deck version as "15"  I don't 
>get any radiation or data problems, beyond the warning about the new 
>start time convention.  My results are similar to TRNSYS 15.
>
>I then converted the decks to "version 16" and made the changes to 
>the type 9 that are described in the user manual.  I'm using TMY 
>data for the entire year, but I'm not using all columns of the 
>entire TMY file, so I'm not using the default TMY reader mode.  Now 
>when I run these decks, I got the following results:
>
>1.                   Many type 16 errors due to radiation exceeding the SC.
>2.                   A minimum collector temperature that is below 
>anything in the data file.
>3.                   Similar overall results to TRNSYS 15.
>
>My  type 9 is as follows:
>
>(Idn=input 2,ih= input 3)
>
>UNIT 1 TYPE 9 DATA READER
>PARAMETERS 34
>3 0 7 1
>1 1 0 0
>-2 1 0 0
>-3 1 0 0
>4 1 0 0
>5 1 0 0
>6 1 0 0
>7 1 0 0
>10 -1
>
>I have tried various modes and get similar errors.  If I add one 
>"starter" line to the TMY file and change to mode 5/6, I get fewer 
>radiation errors.
>
>I also looked at type 16 and it appeared that this changed as well:
>
>UNIT 66 TYPE 16 RADIATION PROCESSOR
>PARAMETERS 9
>* RADMODE TRACKMODE TILTMODE 
>DAY        LAT        SC         SHFT       SMOOTH
>4         1         2        ZSTARTDAX1 GLATITUDC1 XSOLARCOC1 ZSHIFTLOC1 2
>* IE
>-1
>INPUTS 7
>* I        IDN        TD1        TD2        RHOG       BETAI      GAMMAI
>1,3 1,2 1,99 1,100 0,0        0,0        0,0
>0          0          0          0          ZGROUNDRC1 GCOLSLOPC1 GCOLAZIMC1
>
>It appears that the smooth mode is no longer used and the last 
>parameter should be -1.  Looking at the documentation, it was 
>unclear what inputs 3 and 4 should be as they are listed as 19,20 in 
>type 16, but the older convention of 99,100 is still indicated in 
>the type 9 documentation.
>
>Do you have any ideas as to what I may be doing wrong?
>
>Thanks,
>
>
>Steven Long
>_______________________________________________
>TRNSYS-users mailing list
>TRNSYS-users at engr.wisc.edu
>https://www.cae.wisc.edu/mailman/listinfo/trnsys-users

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Thermal Energy System Specialists (TESS), LLC
David BRADLEY                           2916 Marketplace Drive - Suite 104
Partner                                        Madison, WI 53719
Phone: (608) 274-2577 USA
Fax: (608) 278-1475
E-mail: bradley at tess-inc.com
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