[TRNSYS-users] Question about external files for type 927

Tue Mar 6 02:53:15 PST 2012

Hi Richard

It is possible to use up to 4 independent (inputs) and 5 dependent (outputs)
in each dynamic data interpolation. (TRNSYS manual, page 7-64)

To describe the order it is an example of a case with two inputs and one
output: 

1 2 3 (a, first independent input)

6 7 8 (b, second independent input)

100   (value of c when a=1 and b=6)

200   (value of c when a=1 and b=7)

300   (value of c when a=1 and b=8)

400   (value of c when a=2 and b=6)

500   (value of c when a=2 and b=7)

600   (value of c when a=2 and b=8)

700   (value of c when a=3 and b=6)

800   (value of c when a=3 and b=7)

900   (value of c when a=3 and b=8)

It is all you need to develop a data file. 

Note: 

Bear in mind that when you are writing a code with Fortran, the order of
independents (inputs) should be written reversely. In the other words, in
Fortran code 'b' should be considered as the first independent parameter. 

Disregards this note if you just want to modify a data file or develop a new
data file. The note is useful when you want to write a code for a new
component. 

For more detail refer to page 7-66 TRNSYS manual.

Hope it helps

Mehdi

  _____  

From: Richard Thygesen [mailto:richard.thygesen at mdh.se] 
Sent: 06 March 2012 07:40
To: Mehdi Shahrestani
Subject: SV: [TRNSYS-users] Question about external files for type 927

Hello!

No I haven’t solved it yet. I have looked in the example file and can see
that the first row is load flow, the second row is source flow, the third
row is load EWT and the fourth row is source EWT but I don’t know if this
data on the rows are in some special order or if I need values for the whole
capacity range of the heat pump. After the first four rows there are rows
for capacity ratio and power ratio but I don’t know how many rows is to be
input and if they should be in some special order.

It’s probably not so difficult but I don’t seem to solve this myself.

Best regards

Richard Thygesen

Doktorand

Mälardalens högskola

Akademin för hållbar samhälls- och teknikutveckling

Tel: 021-10 31 82

Beskrivning: Beskrivning: starkt mdh.gifMobil: 073-66 20 796

richard.thygesen at mdh.se

 <http://www.mdh.se/> www.mdh.se

Beskrivning: Beskrivning: mälardalens högskola

Från: Mehdi Shahrestani [mailto:mahdishahrestani at gmail.com] 
Skickat: den 5 mars 2012 23:56
Till: Richard Thygesen
Ämne: RE: [TRNSYS-users] Question about external files for type 927

Richard 

Have you already solved the problem? 

Mehdi

  _____  

From: trnsys-users-bounces at cae.wisc.edu
[mailto:trnsys-users-bounces at cae.wisc.edu] On Behalf Of Richard Thygesen
Sent: 02 March 2012 13:18
To: TRNSYS-users at engr.wisc.edu
Subject: [TRNSYS-users] Question about external files for type 927

Hi Trnsys users.

I’m new to Trnsys and have a problem with creating an external heating file
for the type 927. 

I have looked in the manual chapter 7, 7.4.4.4. DynamicData (DYNDATA and
DATA) but I still don’t get it.

Exactly how is the file created? I have capacity test data for the heat pump
according to EN255 and EN14511 in the form of load and source temperatures
and flows and the electrical power and heating.

Best regards.

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