[TRNSYS-users] Questions about new component

[Cramer Silkworth]

Artemi,
 
If you have tmy2, why do you want to go to 109? We (Transsolar) can
create 109 files, but the scripts to do so aren't something I can easily
send you. What city are you using? Maybe I have it already. I doubt
Meteonorm can create a 109. A "109 weather file," as far as I know, only
exists in the Trnsys world. Just change parameter 1 of type 109 to 2
instead of 1 and it will know it's getting a tmy2 file and not a 109.
 
Variable cycles are how some Types handle multiple sets of variables.
Type 109, for example, can process various surface orientations to
create the total, direct, and diffuse radiation levels. The calculation
is the same for each of these, so the type cycles (loops) for each input
orientation, and outputs all the results grouped in the same order as
they were input.
 
Blocking all solar radiation to the roof might be as simple as saying
that it's 100% shaded. Or just override the usual horizontal radiation
input and set it equal to zero. I don't think you can set the roof
surface temperature directly, but you can say that the temperature
"outside" this particular surface is equal to an input, connected to the
output of your component - as if there were different ambient conditions
for the roof, rather than the normal outdoor temp.
 
I hope this helps.
 
-Cramer
 

J. Cramer Silkworth

Transsolar Climate Engineering

Technical consulting for energy efficiency and environmental quality in
buildings.

145 Hudson Street

Suite 402

New York, NY 10013

Office: 212-219-2255

silkworth at transsolar.com



  _____  

From: Artemi Spanaki [mailto:spanakiart at hotmail.com] 
Sent: Tuesday, January 13, 2009 5:52 AM
To: trnsys-users at engr.wisc.edu; techsupport at tess-inc.com;
software at cstb.fr
Subject: [TRNSYS-users] Questions about new component



Dear David and TRNSYS users.

 

I would like to ask you some things in order to solve some of my
problems, in a simulating procedure.

 

I used "type109".user instead of "type109.TMY2". How can I convert a
weather data file of *.tm2 to a *.109? Is it possible to create a 109
file using the Meteonorm software?

 

What is the meaning of the creation of a cycle of variables? For example
getting the weather data in a cycle means that n new data are taken
again and again?

 

 I created a new component for passive cooling through building's roof.
Since the new component is a roof by its own, how can I describe that
the roof of the *.bui file does not takes any solar radiation? The new
component has a variable named "roof temperature". How can I set this
value as equal to the roof temperature in *.bui file?

 

Is there any way to access the kernel of my project in simulation studio
in order to check my model?

 

Wishing you a Happy New Year!

 

Yours sincerely

 

Artemi Spanaki


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