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Thanks a lot for Janet and Lee's important information which is very helpful for our work. Kind Regards, Cao Sunliang > From: nussbicker@itw.uni-stuttgart.de > To: caosunliang@msn.com > CC: trnsys-users@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@graduate.hku.hk [mailto:a8304506@graduate.hku.hk] > Gesendet: Dienstag, 25. Januar 2011 13:58 > An: SUNLIANG CAO > Cc: trnsys-users@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@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 > > > > > > > > > > > > > > > > > > > > > > > > > > > > |