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 25, 2024
Topics: 30 / Replies: 172
Reply
RE: Invalid floating point operation

@ayoub-nassa. There are no issues of compatibility between 18.04 and 18.05. You should be able to open the file in the new version and run it with no ...

1 year ago
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RE: Fortran - TypeStudio Editing an Obsolete Type - Type 60l ( horizontal tank with internal HEX) - conversion .for to .f90

@mehdi_s Mehdi, I realize this is not exactly an answer to your question but may I ask why you are working with Type60? There are horizontally ...

1 year ago
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Answer to: How can I add PCM wall from Type 56

I am aware of three possibilities for modeling PCMs in a Type56 building. Transsolar and TESS both offer add-on components for sale. Transsolar's is...

1 year ago
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RE: Vertical ground heat exchanger

@JJLiu Hi Jingjing, You can set the number of preheat years to zero in which case the other values don't matter. In case it is useful in fut...

1 year ago
Topic
Replies: 4
Views: 724
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Answer to: VRF Heat Pump Models

Jingjing, Type581 is in the TESS Utility library. Types42 and 43 are basically the same concept but are a little more limited in the number of dep...

1 year ago
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Answer to: Vertical ground heat exchanger

Abir, The units are in h.m.K/kJ. Thank you for catching the omission. We will get the proformas fixed in the next version release. kind regards,...

1 year ago
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Answer to: VRF Heat Pump Models

Liu and László, There has been a good bit of interest in this topic lately. Some years ago I developed a VRF model of an air-to-air device in the c...

1 year ago
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Answer to: Shading device leads to higher temperatures

Jakob, When you add a shading device, it impacts only the radiation exchange. There is no coupled impact on the way that air flow is being handled....

1 year ago
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Answer to: Air resistance for internal shading screens

Abir, The impact that the drapes have on solar shading and the impact that they have on air resistance will need to be treated independently. Th...

1 year ago
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RE: Mathematical Description for the outputs in TRNBuild

@Jen I suppose the documentation infers that these are two terms in a larger outside surface energy balance. This might be a situation to contact your...

2 years ago
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Answer to: How can I add BIPVs in sketch up model with TRNSYS3D?

Trnsys3D is intended for drawing the geometry of building thermal envelopes. Trnsys3d's output is imported into TRNBuild and BIPVs are not specified i...

2 years ago
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Answer to: Mathematical Description for the outputs in TRNBuild

Type56's mathematical description is contained in its own manual: .\TrnsysXX\Documentation\05-MultizoneBuilding.pdf kind regards, David

2 years ago
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