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[TRNSYS-users] TRNSYS message 14



Dear trnsys users,
I'm simulating an energetic concept on trnsys simulation studio and i've this error message:
"TRNSYS message 14; the trnsys processor has reported an error while trying to process EQUATIONS and CONSTANTS in the provided TRNSYS input file. The maximum allowable number of constants + equations has been exceeded. Either reduce the number of equations and constants in the input file or increase the limit on the number of equations and constants. If the limit is to be increased, the variable nMaxEquations should be modified in the TrnsysConstants file. The TRNSYS source code will then have to be re-compiled and a new TRNSYS dynamic link librairy created."

I cannot reduce the number of equations and constants otherwise my model is false. How can i re-compiled my TRNSYS source code and is there any risk in doing that ? Furthermore, where can i find the Trnsysconstants file ?
Thanks for your answer.
Best Regards.
Frédéry.

2009/3/19 <trnsys-users-request@cae.wisc.edu>
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Today's Topics:

  1. Runtime error using Type155 Matlab Calling (Giacomo Barale)
  2. Re: (no subject) (David Bradley)


---------- Message transféré ----------
From: "Giacomo Barale" <stage02@ferasrl.it>
To: <trnsys-users@cae.wisc.edu>
Date: Thu, 19 Mar 2009 10:34:41 +0100
Subject: [TRNSYS-users] Runtime error using Type155 Matlab Calling
Dear all,
 
I wrote some some small programs in matlab using .m files. I then coupled these .m files with Trnsys16 Studio using the type155 component. They work fine individually, but when i try to make them comunicate, linking outputs from one of them to inputs of another one, i receive this error message:
 
"Runtime error!
 
Program: C:\Program Files\Trnsys16\Exe\TRNExe.exe
 
This application has requested the Runtime to terminate it in an unusual way."
 
On the other end, liniking the Type155 with a different component, as the weather data reading and processing Type109, doesn't give me the same problem.
 
 
 
Can anyone help me to solve this problem?
 
Thank a lot in advance
Best regards
 
Giacomo


---------- Message transféré ----------
From: David Bradley <bradley@tess-inc.com>
To: Giorgos Fragogiannis <gfrago@metal.ntua.gr>
Date: Thu, 19 Mar 2009 11:20:21 -0500
Subject: Re: [TRNSYS-users] (no subject)
Giorgos,
  I would stay with Type753 (heating coil) and Type508 (cooling coil) if indeed that is how the building is being heated and cooled. I am not sure how you are controlling the system but I would recommend putting the zones into temperature level control and adding a thermostat that turns on and off the flow to each coil depending on the temperature of the zone (instead of calculating a zone load and then somehow imposing that on the coils. You may also need to use some diverting valves (Type11) to control whether the water from your heat pump is going to the heating or the cooling coil.
Kind regards,
 David


Giorgos Fragogiannis wrote:

Dear all

I am new user in trnsys and I try to simulate o ground source heat pump system connected to o 7 zone building (type 56), in order to study the interrelation between  ground, HP (water to water), fan coil and building.

My question is what type of fan coil I must used in order to meet  the  heating and cooling demand?

Until now I tried  to solve this problem by using type 753 and 508 simultaneously, but it is difficult to controlled it!

 

Is the right way to use of water to air heat pump (type 505), as fan coil  or you have any other idea about this problem ?

 

My Regards

 George Fragogiannis

National Technical University of Athens

School of Mining and Metallurgical Engineering


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