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.
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  • 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.
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DavidBradley
@davidbradley
Admin
Member
Joined: Jan 20, 2023
Last seen: Nov 25, 2024
Topics: 30 / Replies: 172
Reply
RE: Detailed radiation mode

@sarmouk Mohamed, I don't see the model attached to your previous comment. In any case, I was able to make a test case in which I have two airnodes st...

1 year ago
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Answer to: Detailed radiation mode

Mohamed The detailed mode should still work. When dealing with a situation such as yours, the idea is that you want to have multiple airnodes all co...

1 year ago
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Answer to: How to calculate the rated power for single-speed pump (TYPE 114) for a given flow rate in TRNSYS.

Aditi, I am not sure where those defaults come from. The power drawn by a pump when operating is most correctly calculated from knowing the head ag...

1 year ago
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Answer to: how to size pipe (TYPE 31) for a given mass flow in TRNSYS

You need to compute the maximum amount of liquid mass that the pump can transfer in a timestep (rated flow * time step). The pipe should then have a v...

1 year ago
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RE: Setback schedule

Type14 just defines values at points in time. When a simulation gets to the end of a schedule defined by Type14, the schedule repeats. If you define t...

1 year ago
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RE: Setback schedule

To clarify a little further... In TRNBuild you can set up weekday and weekend daily schedules and then select from them to form a weekly schedule....

1 year ago
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Answer to: Setback schedule

Salma, There are a number of ways that you can define setbacks and setups in setpoints. If you are working with a Type56 building then you can ...

1 year ago
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Answer to: Is there any TRNSYS model for cold storage (design temperature zero Celsius or less than zero)?

The psychrometric routines in the TRNSYS kernel are valid well below 0C so there should be no problem using Type56 (or the other building models) for ...

1 year ago
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Answer to: Type 56 - External calculation of radiation - 3D building Tutorial step 5

Arnaud, You're correct about the function of those equations: they convert the data in the weather file from kJ/h.m2 to W/m2. However, those equat...

1 year ago
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Answer to: References for the formulas used as modifying function used in component Type686 (Synthetic Building Loads Generator.)

Aditi, There isn't really a reference underlying Type686. The basic premise is that a building load is cyclic and more or less sinusoidal. All of ...

1 year ago
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Answer to: Issue with Type163

Salwa, I don't think the problem actually has to do with Type163. The error message that you attached suggests that there is a problem reading fro...

1 year ago
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Replies: 0
Views: 518
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RE: Debug mode does not show variables value in Visual Studio

@alish if you just write a simple "hello world" kind of program in Fortran using the Visual Studio then can you hover over variables and see their val...

1 year ago
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Answer to: Maximun instances number of Type 170

Xiaohan, As far as I can tell from the code, there is no reason to limit the number of instances of Type170. The limitation is set in the Type170 ...

1 year ago
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