[TRNSYS-users] Types 60 and 109

[Michaël Kummert]

Fernando,

> Working with TYPE60-TRNSYS16 (storage tank), I got incorrect results. I
> think that the following lines in the source code shouldn’t be
> commented:
> ...

You are correct that this is a bug in Type 60. It was fixed in the 
16.00.0037 release.
That release contains a significant update to the manuals and fixes many 
issues, including two bad bugs with Type 60 (Stratified tank with heat 
exchangers) and Type 10 (rockbed storage). We strongly recommend that 
all users install the update.

> Also, TYPE109 (integrated reader and radiation processor) fails reading
> input files at some time steps. For variables which appear in the input
> file, at some steps the output value is equal to the value at next time
> step (this value is repeated twice); for example:
> 
> INPUT FILE               OUTPUT - TYPE109
> 15.2                             13.2 (?)
> 13.2                             13.2
> 
> This always happens at sunset time steps. I think that the problem comes
> up from the “update_time_sun_radiation” subroutine, which incorrectly
> changes the value of “u(m)%p(n_low(k),0)”

We will investigate this issue. Could you send me an example (project + 
data file) off-list?

Thank you,

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