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: Data File Generation for HP

@shamsoddinghiami Unfortunately Trnsys is not able to deal with partially complete data files so there are two options. One option is that you can ...

6 months ago
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RE: 2-Pipe Variable Refrigerant Flow model

Francisco, For some reason I did not receive the email but I think I found yours so I will send you the documentation. I am afraid that the model is b...

6 months ago
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RE: Discharge power

@ MrQuack I think it would be best to have a look at your project. Please send an email to techsupport@tess-inc.com and include the contents of your u...

6 months ago
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RE: Discharge power

@MrQuack I agree that adding more cells in parallel should give you more capacity. However, the number of cells in parallel and series won't affect th...

6 months ago
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Answer to: Discharge power

@MrQuack I am afraid I don't quite follow your question. Are you asking whether it is possible to change the number of cells in series or the characte...

6 months ago
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Answer to: Discharge power

@mrquack The output power (the power drawn from the battery) is an input to the model so it is not included among the model's outputs. A positive val...

7 months ago
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Answer to: Solar storage tank with two immersed heat exchangers_Type?

I think in both cases (534 and 1534) there are also "data file/plugin" versions of the proformas that allow you define multiple heat exchangers using ...

7 months ago
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Answer to: Solar storage tank with two immersed heat exchangers_Type?

@manuel_ines If you have the TESS Storage Tank library v18 you can use Type1534. If you have v17 of the libraries you can use Type534. Both can accomm...

7 months ago
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Answer to: Energy gain from lights

@shamsoddinghiami Shams, I realize this doesn't answer your question very directly. However, I find the lighting controls that are built into TRNBu...

7 months ago
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Answer to: Linking Matlab to TRNSYS while having installed two Matlab versions

@parispasq The reason that Matlab2024 is not working may be that the version of the Type155.dll file located in your .\TrnsysXX\Exe\ directory has t...

7 months ago
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Answer to: Problem with heat capacity when modeling apartment in multi-family house

@jolind You could treat the intermediate floor structure above as a thermal resistance rather than as a thermally massive structure. Another thing I w...

8 months ago
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Answer to: Always timestep 1hr for active layers?

@jolind I think what you are seeing is the building's time base, which is a bit like a time step. Type56 uses something called the conduction transfer...

8 months ago
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RE: 2-Pipe Variable Refrigerant Flow model

@oumaima The new Type (Type1254) includes a documented example. I would not really call the example a tutorial because while the documentation explain...

8 months ago
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Answer to: Inital temperature in active layer

@jolind There is unfortunately not a way to set the initial value of an active layer and yes, the initial active layer temperature output does display...

8 months ago
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