[TRNSYS-users] Data file that is not dependend on time

[Marion Hiller]

Hi Jan,

I'm not aware that such a component exist.
However, I wonder if Type42 with 2 independent variables where interpolation is replaced by "an interval check" would serve your needs.

An example data file for Type 42 is located in:
\Trnsys18\Examples\Data Files\Type42-2_Independent_Variables.dat

I have the feeling it can be done by equations too to but it is laborious and error-prone.
Best regards,

Marion

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Von: TRNSYS-users <trnsys-users-bounces at lists.onebuilding.org> Im Auftrag von Böttner, Jan via TRNSYS-users
Gesendet: Mittwoch, 6. April 2022 14:43
An: trnsys-users at lists.onebuilding.org
Cc: Böttner, Jan <Jan.Boettner at dbfz.de>
Betreff: [TRNSYS-users] Data file that is not dependend on time

Hi,
I am trying to implement the VDI 4655 into TRNSYS. Maybe someone knows it and allready used it - then I'd appreciate if you could tell me, how you did it.
Otherwise it doesn't really matter what the VDI is about.

My problem is the following:

I know how to implement a data file, that has time-dependent values and that is read for each timestep (Type 9e).
But what I need is a Type, that just reads values in that can then be accessed.
I try to explain what I mean exactly.

Depending on the outside temperature, a day is classified into a category (e.g. 3 categories.) Depending on this category, a factor is applied to a formular. Furthermore, the factor is also dependend on a climate region (e.g 15 regions).
So that means, i want to insert the Matrix (15*3) into TRNSYS and then, a secific value is chosen, depending on the input variable. E.g. the temperatur is 10°C which means category 2 and the climate region is No. 4 (Input 1 (category): 2, Input 2 (region) 4). I therfore want the entry X2Y4 of my Matrix as the output.

Is this even possible? Or do i have to insert that Matrix into the F90 code of a new type?

Any help is highly appreciated.

Best regards,
Jan Boettner
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