[TRNSYS-users] type 50

[Michaël Kummert]

Attila,

> I tried to simulate with the Photovoltaic Thermal component "type 50". 
> It calls for the subrutine solcell and asks for a file which contains 
> data about the cells used. This file should be in 9F10.0 format. I tried 
> to look it up in fortran books with no luck. Could anyone tell me 
> how this file format should look like?

9F10.0 simply means that you should provide 9 real (floating point) 
numbers with 0 digits after the decimal point. You should not interprete 
this litterally however, since SOLCEL requires some numbers that are 
likely to be smaller than 1 (hence should have some digits after the 
decimal point). The (very) important thing to know is that each number 
is expected to span over 10 characters exactly. The numbers will NOT be 
read correctly if they do not have decimal points and are not aligned 
properly.

Please also note that the code seems to expect 4 lines with respectively 
2, 6, 6 and 6 numbers (each of them using exactly 10 characters):

XICELL   CELLPF
TL       TH       CL       CH       VOCLL    ISCLL
ISCHL    ISCLH    ISCHH    ACELL    EG       AOMIN
DAODC    RSH      RSMIN    CONTR    DRSDC    NSER

So an example data file would look like (KEEP THE ALIGNMENT):
0         0.8
43        175       6         20        0.625     0.649
0.625     2.16      2.16      0.0004    14000     1
0.018     10000     0.01      10        -0.005    10

Finally, please note that SOLCEL was part of a user-contributed group of 
components in TRNSYS 15. I attached Appendix 3 of the TRNSYS 15 manual, 
which gives a description of the input file, but you will notice that 
there is a difference in the order of the parameters (ISCLH and ISCHL 
are reversed compared to what is here above, based on the code). The 
format is also wrong (2 lines of 9 numbers vs. 3 lines of 6 numbers) but 
that has no impact on the results (the Fortran "read" statement will 
handle data correctly). Unfortunately I do not have more information on 
SOLCEL so you should use it with care.

Kind regards,

Michaël Kummert

-- 
_________________________________________________________

Michaël Kummert

Solar Energy Laboratory - University of Wisconsin-Madison
1303 Engr Res Bldg, 1500 Engineering Drive
Madison, WI 53706

Tel: +1 (608) 263-1589
Fax: +1 (608) 262-8464
E-mail: kummert at engr.wisc.edu

SEL Web Site: http://sel.me.wisc.edu
TRNSYS Web Site: http://sel.me.wisc.edu/trnsys
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