Re: [TRNSYS-users] Question about TRNSYS-SBM and Type 557 Vertical U-tube Ground Heat Exchanger

[a8304506@graduate.hku.hk]

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@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@graduate.hku.hk
> > To: caosunliang@msn.com
> > CC: trnsys-users@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@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
> > > 
> > >  		 	   		  
> > 
> > 
> > 
> > 
>