more than 500 parameters

[Jsalazar <jsalazar@xxxxxxxxxxxxxxxx>]

Dear Michael,
I know this number of parameters seems quite absurd. But believe me, they
are necessary. I am simulating a thermosyphon system and I want to know
approximately how much heating is needed during the night (auxiliary power)
to guarantee enough hot water on the NEXT day, given the incident solar
radiation and environment temperature. The auxiliary power is turned on
every night a 3 a.m. and stays on for a certain period of time. Then it is
turned off until the next day. In order to calculate this period I simulate
the same deck with the control signal set to "0" and integrate the amount of
energy that is needed to reach the desired temperature, if necessary. This
integral is reset every 24h. I use this information and an excel macro to
generate the "control profile" automatically.
The profile would look like this

0 0
3 0
3 1
3.2 1
3.2 0
24 0
24 0
27 0
27 1
27.5 1
27.5 0
48 0
. .
. .
. .
8760 0
There are 6 points (12 parameters) for each day! That's why I need 4380
parameters. You suggested reading in the file. The problem is that my
intervals are not regular. I suppose the DATA Reader would not do the job...
Thanks,
Juan



------- Original Message --------
De: "Michaël Kummert"
Para: "trnsys@relay.doit.wisc.edu"
Copia:
Assunto: RE:
Data: 03/06/03 05:06


Dear Juan,

Yo would need to make more changes than just NMPAR. NMPAR is the total
number of parameters (for all units). The error you get is because one unit
tries using more than 500 parameters, which is different limit.

I would recommend that you generate the profile using notepad/excel/your
preferred software and save it to a file. It is then easy to read the file
in TRNSYS (4380 parameters seems a little too much to me!).

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@engr.wisc.edu

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

> -----Original Message-----
> From: owner-trnsys@relay.doit.wisc.edu
> [mailto:owner-trnsys@relay.doit.wisc.edu] On Behalf Of Jsalazar
> Sent: Tuesday, June 03, 2003 16:44
> To: trnsys@relay.doit.wisc.edu
> Subject:
>
>
> Dear TRNSYS Users,
>
> I have generated a profile that has 2190 points. I got the
> following error when I tried to run the deck
>
> ***** ERROR ***** TRNSYS ERROR # 50
>
> THE NUMBER OF PARAMETERS SPECIFIED IS NOT BETWEEN 0 AND 500
>
> How could I increase the maximum number of parameters of Type
> 14 to 4380? In this case I would also have to reset NMPAR in
> the param.inc file, right?
>
> Thanks,
> Juan Pablo de L. C. Salazar
>
>
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