Welcome to the TRNSYS Users Forum.

The forum is a place where people can interact and have discussions about different topics involving the use of the TRNSYS software package. Here you can post topics for discussion or questions on using TRNSYS and get advice from other users or TRNSYS experts. This forum is not intended for detailed technical support. Users should contact their distributor’s hotline for such assistance.

Some tips for success on using the forum:

  • Follow the Forum Rules posted in Forum Administration.
  • There are categories for different types of topics and questions. Post your topic or question into the proper category.
  • Before posting a topic or question search the existing topics  (and the TRNSYS Users listserv archive or Post archive) to see if a similar topic or question has already been answered.
  • Use a descriptive topic name. Don’t use attention getting subjects, they don’t get attention and only annoy people.
  • State the version of TRNSYS and which add-ons your are using.
  • Include enough specific details for your topic of question to be answered. Just posting “Why am I getting an error?” without describing the specific error and what you are trying to do when you get the error will not receive a response that fixes your issue.
  • Remember when people help you, they are doing you a favor. Be patient, help people out by posting good descriptions of what you need help with, and be polite even if a response does not solve your issue.
  • Moderators may edit your post for clarity or move your topic to a more appropriate category.

DavidBradley
@davidbradley
Admin
Member
Joined: Jan 20, 2023
Last seen: Nov 15, 2024
Topics: 30 / Replies: 172
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Answer to: I want to call Refprop in TRNSYS 18 , I'm working on a system i have liquid air, propane, methanol, thermal oil, to adjust using all these fluids, I want to learn how to combine Refprop with Trnsys 18?

coolprop is called from inside a Type. You can refer to the 07-ProgrammersGuide.pdf in the documentation set for how to implement the call. kind reg...

9 months ago
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Answer to: I want to call Refprop in TRNSYS 18 , I'm working on a system i have liquid air, propane, methanol, thermal oil, to adjust using all these fluids, I want to learn how to combine Refprop with Trnsys 18?

@gehadrabee24 A long time ago (in v16 I think) there was a link between Trnsys and Refprop but it was not maintained. Typically we steer people toward...

9 months ago
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RE: different radiators as heating element within a type 56 with 18 different thermal zones

@shamsoddinghiami I forgot to mention that you can define as many gains and/or ventilations in the zone as you want. You can group all the emitters...

10 months ago
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Answer to: different radiators as heating element within a type 56 with 18 different thermal zones

@shamsoddinghiami The HEATING type that is built into TRNBuild/Type56 is idealized so that you tell it what temperature should be maintained in the ...

10 months ago
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Answer to: Grid Charging Scheme Type47b and Type48c

@tobiaaas yes, since those values are inputs they can be changed as often as you want during the simulation. You could read in the values from a Ty...

10 months ago
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Answer to: Type 47 and Type 48. Battery and inverter compability

@tobiaaas The most important parameters for Type47 are the cell energy capacity, number of cells in series and number of cells in parallel. Those th...

10 months ago
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Answer to: Since adding the geopositions in TRNBuild, a vfm file is no longer created

@leomodra this sounds like an issue that might be best addressed to your Trnsys distributor. If you are not sure who to contact please contact me di...

10 months ago
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Answer to: Combine Li-Ion Battery (TESS Type 549) with Inverter (Type 48)

@jan-geier It may be that not all of the modes of Type48 are compatible with Type549. However, Type48b is used with Type549a in the example that you...

10 months ago
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Answer to: Type for a field of Borehole Heat Exchangers with free location of boreholes

@charles-maragna I am not aware of the Université de Montréal models that are based on g-functions. I would be very interested in dusting them off i...

10 months ago
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Answer to: Transient energy storage in tanks of phase change materials

@charles-maragna I would recommend trying to contact the authors of the paper. You might also look at Prof Katherine D'Avignon's work specifically at ...

10 months ago
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RE: Issue with linking Matlab file with TRNSYS

@salwa When we compile Type155, we have to link it to four *.lib files. The *.lib file that is referenced in your screen capture (libmx.dll) is one o...

10 months ago
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Answer to: Issue with linking Matlab file with TRNSYS

@salwa It is a bit unclear to me when the error is occurring. Do you get this error as soon as you launch the coupled simulation? If so then I would...

11 months ago
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RE: my tip for fixing Internal error in solar radiation distribution (sumsitot) in TRNSYS

@dromar123 thank you for the tip. Would you be willing to share what data you found to be erroneous and how you modified it to get that particular gla...

11 months ago
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Answer to: Adaptive Comfort Model

@m-m yes. The Trnsys18 building model has a PMV/PPD calculation built in. There is also a component in the TESS Libraries v18 that provides a little...

12 months ago
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