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) 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.

TM Abir Ahsan
@tm-abir-ahsan
Trusted Member
Joined: Mar 27, 2023
Last seen: Dec 8, 2023
Topics: 14 / Replies: 14
Reply
RE: New wind direction incorporating building turn

@DavidBradley Thanks David, for looking into this. My building structure's external convection coefficient rely on the accurate estimation of wind sp...

7 months ago
Reply
RE: How to write set of first-order equations using the Fortran language

@DavidBradley Thank you David for your quick response. I fully understand the first part of your answer, I saw that the analytical soln. is coded in-...

8 months ago
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RE: How to write set of first-order equations using the Fortran language

@a_weiss I was looking at all other types at trnsys source code section and found that tess type 963 (lumped capacitance model) solves differential eq...

8 months ago
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RE: Ground coupling model related Query

@a_weiss It worked! I was doing it wrong. I was giving trying to generate the soil noding using the entire 3D model in sketchup. After giving it the o...

10 months ago
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RE: Ground coupling model related Query

@a_weiss Thank you so much for your detailed answer. I have sketch up and I want to use the TESS soil noding extension to generate the soil noding fil...

10 months ago
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Answer to: Model calibration and finding optimum capacitance of furnished airnodes

@DavidBradley Hi David, That was super helpful. Thank you so much, I will use that one then!

11 months ago
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RE: How to write set of first-order equations using the Fortran language

@a_weiss amazing, thank you so much for the detailed explanation. I will follow the instructions and follow up with you on this.

12 months ago
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Answer to: Model calibration and finding optimum capacitance of furnished airnodes

Hi Tim, Thanks for your help. I would request TRNSYS to include this modification so that users can calibrate their model which I believe is a common ...

12 months ago
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Answer to: Type143 -query on correction factor

@JJLiu You can use type143, it is a single speed Water to air heat pump.

12 months ago
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RE: Vertical ground heat exchanger

@davidbradley Thanks for your quick response David. Appreciate it.

12 months ago
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RE: How to write set of first-order equations using the Fortran language

@meiling_J really interested to know how the code turns out. It appears that I am trying to write a model as well and getting stuck with the same prob...

12 months ago
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Answer to: Air resistance for internal shading screens

Hi David Thanks for your detailed response. You have always been super helpful. Best Abir

12 months ago
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Answer to: Type56 and Genopt (How to optimize glazing materials, roof slope)

Hi Tim, Thank you so much for your reply. I tried it out and it worked, I am ignoring the error that is being produced by not changing the surface are...

1 year ago