[TRNSYS-users] Confusion in Type42

[Diego A. Arias]

Dear Wimolsiri,

Thank you very much for your suggestion. These explanations were added 
to the parameters in Type42's proformas.
Best regards,

Diego

Wimolsiri Pridasawas wrote:

> Hello, David,
>
> Thank you very much for the answer. I understand and agree with your 
> reasons. And I understand that you purposely program like this. I just 
> always confuse when I use 3 independent variables, especially when 
> setting the input for type42a.
>
> What do you think, if you could add a blanket behind the questions for 
> the parameter No. 4,5 and 6 of type 42a, as
> ’Number of value of 1^st ind. Var (3^rd line)
> ’Number of value of 2^nd ind. Var (2^nd line)
>
> ’Number of value of 3^rd ind. Var (1^st line)
>
> It would probably be the same for you and everybody, but I feel that 
> it reminds me to think again before entering the data.
>
> Kind regards,
>
> Wimolsiri
>
> ------------------------------------------------------------------------
>
> *From:* trnsys-users-bounces at engr.wisc.edu 
> [mailto:trnsys-users-bounces at engr.wisc.edu] *On Behalf Of *David Bradley
> *Sent:* Tuesday, March 28, 2006 4:19 PM
> *To:* Wimolsiri Pridasawas; trnsys-users at engr.wisc.edu
> *Subject:* Re: [TRNSYS-users] Confusion in Type42
>
> Wimolsiri,
> The structure of external data files read by the DATA, DYNDATA, or 
> DynamicData subroutines is that the first line in the file contains 
> the value of the highest order independent variable. Thus if you have 
> three independent variables, line 1 in the data file should contain 
> the values of the "third" independent variable. Line 2 should contain 
> the values of the "second" independent variable and line 3 should 
> contain the values of the "first" independent variable. This structure 
> makes it easier to add new independent variables (and the dependent 
> variables that go along with them) to data files; the new independent 
> variables go at the top of the file and the new corresponding 
> dependent variables go in a block at the beginning of the data section 
> instead of scattered throughout the data section.
> Kind regards,
> David
>
>
> At 05:15 3/28/2006, Wimolsiri Pridasawas wrote:
>
> Content-class: urn:content-classes:message
> Content-Type: multipart/related; type="multipart/alternative";
> boundary="----_=_NextPart_001_01C65258.DA51FED0"
>
> Hello!
>
> There is a confusion in the code of function subroutine DATA, type 42a 
> and 42b (conditioning equipments for 3 and 2 variables). According to 
> the manual for subroutine ‘DATA’ (page 62, programmerguide), which is 
> used for interpolate the data sets, in the external data access file 
> (*.dat file),
>
> The first row is the value of the independent variable 2
> The second row is the value of the independent variable 1
>
> To avoid the mistake and confusion, could you please consider changing 
> or renaming the independent variable of type 42a and 42b as,
>
> The first row is the value of the independent variable 1
> The second row is the value of the independent variable 2
> and
> The second row is the value of the independent variable 3
>
> The model has probably been changed, but the current version 
> (16.00.0037) that I am using now make me confuse quite a lot.
>
> Best regards,
>
> Wimolsiri
>
>
>
>
>
> /________________________________
> /
> /Wimolsiri Pridasawas/
>
> Kungl. Tekniska Högskolan
>
> Inst. för Energiteknik
>
> Tillämpad Termodynamik och Kylteknik
>
> SE-100 44 Stockholm
>
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>
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>
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-- 

Diego A. Arias
TRNSYS Coordinator
Solar Energy Laboratory
University of Wisconsin - Madison
1500 Engineering Drive
Madison, WI 53706