[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [TRNSYS-users] wood and gas burner (type 170) in the same project?
Dear Raf,
I think that the problem is that the source code is not re-reading the
parameters for the different instances of this component during each
simulation call. I think that you will find a code line like this:
IF(INFO(7).NE.-1) GO TO 3
This means that if this is not the initial call, jump to the line with
label '3'.
You will have to make sure that this label is located before the
parameters are read, for example:
3 dummy = PAR(1)
If you still have problems with this component, please feel free to send
me the sourcecode and a simplified version of your simulation where I
can see the problem.
Best regards,
Diego
Gorissen, R. wrote:
Dear trnsys users,
I’m having a little bit of trouble with the non standard type 170 (or
the update version of it, type 370) to model a wood/gas boiler (in
trnsys 15 build 3.0.0.26)
My heating system simulation use 2 large boilers, one running on gas
and the other on wood. So I included 2 type 170’s in my project, one
to simulate the large gas fired burner (mode 2) and one smaller wood
fired unit (mode 4). But looking at the output of these two burners it
shows that when ever a gas fired burner is present in the project, the
internal calculation of the consumption of wood (OUT(16): Mpkt_Br in
[kg/h]) in the wood burner unit uses the calorific value for gas (35
MJ/m3) instead of the calorific value of wood (about 18.5 MJ/kg). Thus
resulting in wood consumption which is to low. When I set both burners
to wood (PAR(2),BSTRO = 4) the internal calculation of the needed wood
[kg/h] seems correct (comparing it to OUT(6),Phumax).
Is there a workaround for this problem (setting a different logical
unit for both burners, although there is no parameter for this in type
170)?
Best Regards,
Raf
------------------------------------------------------------------------
_______________________________________________
TRNSYS-users mailing list
TRNSYS-users@engr.wisc.edu
https://www.cae.wisc.edu/mailman/listinfo/trnsys-users
--
Diego A. Arias
TRNSYS Coordinator
Solar Energy Laboratory
University of Wisconsin - Madison
1500 Engineering Drive
Madison, WI 53706