[TRNSYS-users] domestic and space heating load

Wed Jan 26 08:11:56 PST 2011

David,
  It depends a bit on what form the measured results are in. If your 
results are in terms of flow rates then you can replace the existing 
flow rate (water draw) forcing function in the example with the 
combination of a Type9 data reader and some component (an equation 
probably) that takes your daily results and turns them into hourly (or 
timesteply) results. If your results are in terms of energy then I would 
recommend looking at Type682 in the TESS Loads and Structures Library. 
This component imposes a load on a liquid flow stream. You'll again read 
the data with Type9 and will need to turn the daily information into the 
fraction of the load seen at each timestep. Then the energy rate will be 
imposed on the SDHW liquid stream at the appropriate point.
Best,
  david

On 1/26/2011 08:15, Redpath David wrote:
>
> Dear all,
>          Does any one know how to add in a domestic hot water load and 
> space heating load to the TRNSYS SDHW model? I have daily results from 
> an actual experiment. Thanks in Advance.
>
> Regards,
>         David
>
> David Redpath
> Lecturer energy storage
> Room 22B04
> Centre for Sustainable Technologies (CST)
> School of the Built Environment
> University of Ulster
> Jordanstown Campus
> Shore Road
> Jordanstown
> County Antrim
> Newtownabbey
> Northern Ireland
> UK
> BT37 0QB
>
> (email) d.redpath at ulster.ac.uk
>
> 028 90366169  (lab)
>
> http://www.cst.ulster.ac.uk/
>
>
>
> -----Original Message-----
> From: trnsys-users-bounces at cae.wisc.edu on behalf of SUNLIANG CAO
> Sent: Wed 26/01/2011 9:12 AM
> To: nussbicker at itw.uni-stuttgart.de
> Cc: trnsys-users at cae.wisc.edu
> Subject: Re: [TRNSYS-users] Question about TRNSYS-SBM and Type 557 
> Vertical U-tube Ground Heat Exchanger
>
>
>
> Thanks a lot for Janet and Lee's important information which is very 
> helpful for our work.
>
> Kind Regards,
> Cao Sunliang
>
>
>
> > From: nussbicker at itw.uni-stuttgart.de
> > To: caosunliang at msn.com
> > CC: trnsys-users at cae.wisc.edu
> > Subject: AW: [TRNSYS-users] Question about TRNSYS-SBM and Type 557 
> Vertical   U-tube Ground Heat Exchanger
> > Date: Wed, 26 Jan 2011 09:04:28 +0100
> >
> > Hello,
> >
> > I have worked with the SBM (TRNSYS 16, I did some programming work 
> and it
> > took me some time) and for an 1-year simulation with an BTES with 
> 528 BHE,
> > solar collectors ... (no heat pump) it took about 12 hours. May be 
> it's a
> > little faster with newer computers.
> >
> > Best regards,
> > Janet Nußbicker-Lux
> >
> >
> > -----Ursprüngliche Nachricht-----
> > Von: a8304506 at graduate.hku.hk [mailto:a8304506 at graduate.hku.hk]
> > Gesendet: Dienstag, 25. Januar 2011 13:58
> > An: SUNLIANG CAO
> > Cc: trnsys-users at cae.wisc.edu
> > Betreff: Re: [TRNSYS-users] Question about TRNSYS-SBM and Type 557 
> Vertical
> > U-tube Ground Heat Exchanger
> >
> > Hello, Cao.
> >
> > I have no information what the SBM is based on?  I guess it is developed
> > from
> > Eskilson's model or the finite line source model.  If so, I think the
> > simulation time should not be too long (of course it will be much longer
> > than
> > the DST model).  I am currently using a three-dimensional numerical 
> model
> > developed by myself and it occasionally takes days of time to perform a
> > ten-year simulation.  Hence, I think the SBM model should at most 
> need hours
> > of
> > time.  Concerning the conversion of the model to suit TRNSYS 17, it 
> should
> > not
> > be too complicated if you are familiar with Fortran.
> >
> > Best Regards
> > LEE, Chun Kowng
> >
> > Quoting SUNLIANG CAO <caosunliang at msn.com>:
> >
> > >
> > > Hi,
> > >
> > > Thank you very much for Lee's information.
> > >
> > > I have contacted our TRNSYS distributor as well as the contact 
> person of
> > the
> > > non-standard Type TRNSYS-SBM.
> > >
> > > We currently get the information that TRNSYS-SBM is only available for
> > TRNSYS
> > > 15. And if we want to upgrade it to TRNSYS 17, it seems that we 
> need to do
> > > some Fortron programming work.
> > >
> > > Is there anybody has the experience to use TRNSYS-SBM in TRNSYS 
> 17? Is it
> > > very difficult to upgrade TRNYSYS-SBM so that it can be compatible 
> with
> > > TRNSYS 17?
> > >
> > > >From some references, we also know that sometimes it might be very
> > > time-consuming to simulate with TRNSYS-SBM. Is there anybody has the
> > > experience of simulating a large scale ground source heat pump 
> system with
> > > TRNSYS-SBM? How slow it might be (I know it depends, but just want 
> to know
> > > some examples)?
> > >
> > > As the price for TRNSYS-SBM is not very cheap (and there is no demo
> > version
> > > for that type), I just want to make sure it CAN be effectively used in
> > TRNSYS
> > > 17.
> > >
> > > Thank you very much.
> > >
> > >
> > > Kind Regards,
> > > Cao Sunliang
> > >
> > >
> > >
> > >
> > > > Date: Sat, 15 Jan 2011 08:40:37 +0800
> > > > From: a8304506 at graduate.hku.hk
> > > > To: caosunliang at msn.com
> > > > CC: trnsys-users at cae.wisc.edu
> > > > Subject: Re: [TRNSYS-users] Question about Type557 Vertical U-tube
> > Ground
> > > Heat Exchanger
> > > >
> > > > Hello, Cao.
> > > >
> > > > There is another component model, the borehole superposition model
> > (SBM),
> > > which
> > > > should be able to handle your problem.
> > > >
> > > > Best Regards
> > > > LEE, Chun Kwong
> > > >
> > > > Quoting SUNLIANG CAO <caosunliang at msn.com>:
> > > >
> > > > >
> > > > > Hi,
> > > > >
> > > > > I have a question about Type557 Vertical U-tube Ground Heat 
> Exchanger
> > in
> > > GHP
> > > > > Library (TESS Library).
> > > > >
> > > > > I found that Type557 has only one type of distribution for the
> > boreholes
> > > in
> > > > > the ground: the boreholes are uniformly distributed within a
> > cylindrical
> > > > > storage volume of ground.
> > > > >
> > > > > However, if I want to simulate other distribution types for the
> > > boreholes,
> > > > > such  as distributed in a rectangle shape area, triangle shape 
> area,
> > or
> > > > > L-shape area, etc, how can I deal with this problem?
> > > > >
> > > > > Is there any existing type in TRNSYS or TESS Libraries dealing 
> with
> > the
> > > > > Ground Heat Exchangers with different configurations?
> > > > >
> > > > >
> > > > > Thank you very much.
> > > > >
> > > > >
> > > > > Kind Regards,
> > > > > Cao Sunliang
> > > > >
> > > > >
> > > >
> > > >
> > > >
> > > >
> > >
> >
> >
> >
> >
> >
> >
>
>
>
>
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> TRNSYS-users at cae.wisc.edu
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-- 
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
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