[TRNSYS-users] WALL TRANSFERFUNCTION CALCULATIONS &TIMEBASE
David BRADLEY
d.bradley at tess-inc.com
Thu Feb 17 13:15:51 PST 2011
Wang,
you have the thickness of your brick layer set to zero:
WALL WALL001
LAYERS = BRICK
THICKNESS= 0
ABS-FRONT= 0.6 : ABS-BACK= 0.6
EPS-FRONT= 0.9 : EPS-BACK= 0.9
HFRONT = 11 : HBACK= 64
open the wall type manager and set a thickness for the brick. It is
still does not find the transfer function coefficients you may need to
*/decrease/* the timebase. Increasing the time base helps if you have
high mass, thick walls. Decreasing helps if you have lightweight low
mass walls.
David
On 2/17/2011 11:21, 王洋 wrote:
> Dear all,
>
> I met this error:
>
>
> ***** WALL TRANSFERFUNCTION CALCULATIONS *****
>
> UNABLE TO FIND A ROOT AFTER INDICATION THAT A ROOT EXISTED
>
> CHECK THE WALL TYPE AFTER THE LAST CALCULATED WALL
> OFTEN THE WALL CAPACITY IS TO SMALL TO CALCULATE A TRANSFER FUNCTION !
>
> CHECK ALSO YOUR TIMEBASE !
>
>
>
> Attached is INF file, Please check it!
>
>
> And I make the timebase larger, but it still doesn't work.
>
> Many thanks!
>
> Br.
>
> wang
>
>
>
> 2011/2/16 <trnsys-users-request at cae.wisc.edu
> <mailto:trnsys-users-request at cae.wisc.edu>>
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> Today's Topics:
>
> 1. length and witdh from the collector area (Sancho,Fernando)
> 2. Re: g95 compiler (Francois Badinier)
>
>
> ---------- 已转发邮件 ----------
> From: "Sancho,Fernando" <fsancho at sonnenwaermeag.de
> <mailto:fsancho at sonnenwaermeag.de>>
> To: <trnsys-users at cae.wisc.edu <mailto:trnsys-users at cae.wisc.edu>>
> Date: Wed, 16 Feb 2011 11:48:55 +0100
> Subject: [TRNSYS-users] length and witdh from the collector area
>
> Hello TRNSYS-users,
>
> I’m making simulations with plastic collector. Many from the
> commercial models can be resized, so it’s almost free how to
> configurate the collector area. I would like to find an optimal
> distribution, dependent of course on Radiation, temperatures etc…,
> basically how long and width for a minimum output temperature of
> the fluid. Or just what is the best for a certain situation
> 10m*30m or 30m*10m ?.
>
> I ´ve already done my calculations with Excel and know that longer
> means higher output temperature but lower energy gain… but with
> trnsys it’s difficult to face the problem ,
>
> do I take a standard unit and probe around different series und
> parallel distributions L?
>
> Do type 553 and 559 in TESS TRn17 do that; difference width and
> length (I didn’t find it in the general pdf… and have just
> occasionally access to TRNSYS17)?
>
> Any advice or experience?
>
> So Thanks a lot!!!!!
>
> Mit freundlichen Grüßen
>
> Fernando Sancho Márquez
>
> PHÖNIX SonnenWärme AG
>
> ____________________________________________
> PHÖNIX Sonnenwärme AG
> Ostendstr. 1
>
> D-12459 Berlin
>
>
>
> ---------- 已转发邮件 ----------
> From: "Francois Badinier" <francois.badinier at icax.co.uk
> <mailto:francois.badinier at icax.co.uk>>
> To: <mabadie at univ-lr.fr <mailto:mabadie at univ-lr.fr>>,
> <trnsys-users at cae.wisc.edu <mailto:trnsys-users at cae.wisc.edu>>
> Date: Wed, 16 Feb 2011 15:02:13 -0000
> Subject: Re: [TRNSYS-users] g95 compiler
> Marc
>
> If you still want to use g95, an alternative is to define T0,
> Tfinal and
> Timestep as parameters in our new component. The only drawback is
> that you
> have to be careful to change those values whenever you change them
> in the
> simulation studio.
>
> Regards,
>
> François Badinier
> Development Engineer
> ICAX Ltd
> 1 Berry Street
> London EC1M 5PS
> francois.badinier at icax.co.uk <mailto:francois.badinier at icax.co.uk>
> www.icax.co.uk <http://www.icax.co.uk>
>
>
>
> -----Original Message-----
> From: trnsys-users-bounces at cae.wisc.edu
> <mailto:trnsys-users-bounces at cae.wisc.edu>
> [mailto:trnsys-users-bounces at cae.wisc.edu
> <mailto:trnsys-users-bounces at cae.wisc.edu>] On Behalf Of
> mabadie at univ-lr.fr <mailto:mabadie at univ-lr.fr>
> Sent: 14 February 2011 11:57
> To: trnsys-users at cae.wisc.edu <mailto:trnsys-users at cae.wisc.edu>
> Subject: Re: [TRNSYS-users] g95 compiler
>
> Danny and David,
>
> I actually successfully used the G95 compiler with TRNSYS 16 to create
> new components. However, i was not able to properly used TRNSYS
> variables (such as getSimulationTime()) in my TYPES. The only solution
> i found was to stop using this compiler and buying Intel Fortran v11.
>
> I hope you will find a way to fix that problem as it is nice to have
> the choice of a free/light fortran compiler.
>
> Best,
>
> -- Marc O. Abadie
>
>
> David BRADLEY <d.bradley at tess-inc.com
> <mailto:d.bradley at tess-inc.com>> a écrit :
>
> > Danny,
> > getSimulationTime is a function that is defined in the data module
> > called "TrnsysFunctions." When compiling an external Type in either
> > the Compaq or the Intel compilers, I have to make sure that the
> > compiler is set to look for data modules (sometimes called MOD
> > files) in the ..\Trnsys17\Compilers\IVF111\Debug\ directory or else
> > copy them to some other place where they can be found by the
> > compiler. My understanding is that this tells the compiler "don't
> > worry, even though I haven't defined this function called
> > getSimulationTime() in my external Type242.dll, you'll find that
> > function during run-time because my dll will be called by a dll in
> > which the function is defined"
> >
> > I don't know how the G95 compiler handles settings for where to
> > look for *.mod files but this is not specific to Trnsys17, there
> > were a number of TrnsysFunctions called by Types in Trnsys16 as
> > well. We have just expanded their use in Trnsys17.
> > best,
> > David
> >
> >
> > On 2/11/2011 11:12, Danny Jonas wrote:
> >>
> >> Dear TRNSYS users,
> >>
> >> I have use the directions in the document, but after starting the
> >> batch file to compile my own type I've received the following
> >> message:
> >>
> >> "In file Type201.for:72
> >>
> >> Time=getSimulationTime<>
> >>
> >> Error: Function 'getsimulationtime' at <1> has no implicit type"
> >>
> >> could the error be associated with using TRNSYS17?
> >>
> >> Using the example (type242), I can build the type242.dll.
> >>
> >> I'm now trying to use C++, till now it works fine. But I still
> >> don't understand why it doesn't work with the batch file as fortran
> >> code....
> >>
> >> Thanks a lot,
> >>
> >> Best Regards,
> >>
> >> Danny
> >>
> >> -----Ursprüngliche Nachricht-----
> >>
> >> Von: Daniel Bergey [mailto:daniel at buildingscience.com
> <mailto:daniel at buildingscience.com>]
> >>
> >> Gesendet: Mittwoch, 9. Februar 2011 21:14
> >>
> >> An: Danny Jonas
> >>
> >> Betreff: Re: [TRNSYS-users] g95 compiler
> >>
> >> I have successfully compiled a couple of components using
> >> directions in the attached document. I don't recall the URL whence
> >> I downloaded it originally. Sorry about the doc format; let me
> >> know if I should convert it.
> >>
> >> Daniel
> >>
> >> On Fri, Feb 04, 2011 at 01:33:49PM +0100, Danny Jonas wrote:
> >>
> >>> Dear TRNSYS users,
> >>
> >>>
> >>
> >>>
> >>
> >>>
> >>
> >>> I want to use the free g95 compiler to create my own components
> >>> in TRNSYS.
> >>
> >>>
> >>
> >>>
> >>
> >>>
> >>
> >>> I have found the following message in the TRNSYS-users
> Archives:
> >>
> >>>
> >>
> >>>
> >>
> >>>
> >>
> >>>
> >>
> >>>
> [1]http://mailman.cae.wisc.edu/pipermail/trnsys-users/2008/003957.html
> >>
> >>>
> >>
> >>>
> >>
> >>>
> >>
> >>> with the following link:
> >>
> >>>
> >>
> >>>
> >>
> >>>
> >>
> >>> [2]http://software.cstb.fr/main/articles.asp?langue=us
> >>
> >>>
> >>
> >>>
> >>
> >>>
> >>
> >>> But this page no longer exists.
> >>
> >>>
> >>
> >>>
> >>
> >>>
> >>
> >>> Can someone send a link where I can download this example?
> >>
> >>>
> >>
> >>>
> >>
> >>>
> >>
> >>>
> >>
> >>>
> >>
> >>> Thanks in advance,
> >>
> >>>
> >>
> >>>
> >>
> >>>
> >>
> >>>
> >>
> >>>
> >>
> >>> Danny
> >>
> >>>
> >>
> >>>
> >>
> >>>
> >>
> >>> References
> >>
> >>>
> >>
> >>> Visible links
> >>
> >>> 1.
> http://mailman.cae.wisc.edu/pipermail/trnsys-users/2008/003957.html
> >>
> >>> 2. http://software.cstb.fr/main/articles.asp?langue=us
> >>
> >>> _______________________________________________
> >>
> >>> TRNSYS-users mailing list
> >>
> >>> TRNSYS-users at cae.wisc.edu <mailto:TRNSYS-users at cae.wisc.edu>
> <mailto:TRNSYS-users at cae.wisc.edu <mailto:TRNSYS-users at cae.wisc.edu>>
> >>
> >>> https://mailman.cae.wisc.edu/listinfo/trnsys-users
> >>
> >>
> >> _______________________________________________
> >> TRNSYS-users mailing list
> >> TRNSYS-users at cae.wisc.edu <mailto:TRNSYS-users at cae.wisc.edu>
> >> https://mailman.cae.wisc.edu/listinfo/trnsys-users
> >
> > --
> > ***************************
> > David BRADLEY
> > Principal
> > Thermal Energy Systems Specialists, LLC
> > 22 North Carroll Street - suite 370
> > Madison, WI 53703 USA
> >
> > P:+1.608.274.2577
> > F:+1.608.278.1475
> > d.bradley at tess-inc.com <mailto:d.bradley at tess-inc.com>
> >
> > http://www.tess-inc.com
> > http://www.trnsys.com
> >
> >
>
>
> _______________________________________________
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>
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--
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI 53703 USA
P:+1.608.274.2577
F:+1.608.278.1475
d.bradley at tess-inc.com
http://www.tess-inc.com
http://www.trnsys.com
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