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: Dec 20, 2024
Topics: 30 / Replies: 183
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Answer to: Thermal screens for Greenhouses

@sarmouk it depends a bit on the configuration of your greenhouse and of the screen. If your greenhouse is comparatively small and the shades are d...

1 day ago
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Answer to: How to introduce an electric resistance in TRNSYS?

@abdel I am not very familiar with the way that Type399 couples to Type56. However, typically the way that such models connect to Type56 is that the...

5 days ago
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Answer to: Performance map data generation

@shamsoddinghiami You're running into something that is very frustrating in our industry. It is very hard to get performance data for newer (particu...

5 days ago
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RE: Psychrometric properties component (Type 33)

@alish now it is my turn to apologize for a delay in responding! I was able to confirm that I do get the floating point error when I use v18.03.0002 s...

5 days ago
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RE: Floating Point Division by Zero Error in New TRNSYS Component

@alish You are very welcome; I am glad to hear that you were able to find the cause of the problem! best, david

3 weeks ago
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Answer to: Psychrometric properties component (Type 33)

Ali, I should have asked which Trnsys release you are using. If you aren't sure, you can check by opening the file .\TrnsysXX\trnsys.ini with a text e...

3 weeks ago
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Answer to: Inquiry about Type 399

Abdel @abdel I do not have any direct experience with Type399. However the following applies generally. The Trnsys17 engine is 32-bit. The default Trn...

3 weeks ago
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Answer to: Floating Point Division by Zero Error in New TRNSYS Component

Ali, @alish If you are writing your component using Microsoft Visual Studio and the Intel Visual Fortran compiler then you can run TRNSYS input files ...

3 weeks ago
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Answer to: Psychrometric properties component (Type 33)

Ali, @alish usually if you add Type33 to your project directly and call it with conditions outside of its intended range, it will write a warning to t...

3 weeks ago
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Answer to: Type 941 (air-to-water heat pump) - problem with exiting fluid temperature control

@aotrnsyspl Type941 models an on/off heat pump whose compressor can only run at one speed. In order to vary the outlet fluid temperature, a heat pum...

3 weeks ago
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Answer to: Conversion d'un fichier Excel en fichier TMY

@abdel TMY files are text based and each line has to follow a very specific format. There are a number of different versions of the TMY format. All ...

4 weeks ago
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Answer to: Simultaneous simulation of two single zones shoe box models

@rithesh-chajed I am afraid I do not have an answer for you but the situation you describe sounds like one that ought to be sent to your TRNSYS distri...

1 month ago
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Answer to: Simultaneous modelling of multiple multizone buildings

@shamsoddinghiami no, there is not a limitation on the number of instances of Type682 that can be in a project.

2 months ago
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RE: Recompile Type written in C++

@janboettner just in case you were not aware, both Visual Studio, the C++ compiler and the Intel Fortran compiler are all free. If you are using Trns...

2 months ago
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