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.

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A_Weiss
A_Weiss
@a_weiss
Moderator
TESS Engineer
Joined: Jan 19, 2023
Last seen: Apr 29, 2024
Topics: 10 / Replies: 95
Reply
RE: How to store and array

Hello @franzdra, The Type shouldn't read in its full parameter list at the getisFirstCallofSimulation() step, but it's perfectly okay to read in a...

1 week ago
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Answer to: Type 999 and 997

@shamsoddinghiami Regarding the second question from the original post, about the number of pipes and pipe directions ... I still can't say exactly wh...

2 weeks ago
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Answer to: Load Profile component

If your load profile is a repeating pattern (like a daily schedule), you can use the Type 14 forcing function to define your load profile. If your loa...

2 weeks ago
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Answer to: How to store and array

@franzdra What you described with T and T_new is perfectly analogous to how we use dynamic storage in TRNSYS. The 'dynamic' in 'dynamic storage', in t...

3 weeks ago
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RE: How to store and array

On re-read, I realize I probably should've used dynamic storage in the example above. Dynamic storage was written specifically to make saving and upda...

4 weeks ago
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Answer to: How to store and array

Hello @franzdra, What we usually do in our Types is define the array as a static array within the Type, with a maximum allocation for each dimension...

4 weeks ago
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Answer to: Initial values for MPC (model predictive control)

@m_labat I don't know which tank Type you're using (or which version of its source code), but that variable name does sound correct. There should be a...

1 month ago
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Answer to: Semi-predictive control with future values

There isn't currently a way in standard TRNSYS to run a simulation for xxx hours, then "rewind" and make a control decision based on the results at th...

1 month ago
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Answer to: Initial values for MPC (model predictive control)

My first thought is that you are probably using the average values from the final time step of the first simulation to set the initial values of the s...

1 month ago
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RE: Type62

@raymond-bacque What version of TRNSYS are you using? What version of Excel are you using? Are you using 64-bit or 32-bit versions of Excel and TRNSYS...

2 months ago
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RE: PID controlled Constant volume liquid storage (TYPE 158)

@tobiaaas On further thought, I realized sending the iterative feedback controller a tank temperature that only varies with time won't tell you ho...

2 months ago
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RE: PID controlled Constant volume liquid storage (TYPE 158)

@tobiaaas Sounds like you have isolated the problem to the signal output of Type 22/23. Maybe next thing to try would be disconnecting the tank fro...

2 months ago
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Answer to: PID controlled Constant volume liquid storage (TYPE 158)

@tobiaaas, My first thought is that the auxiliary heat input of Type 158 is too small. I would plot the auxiliary heat input going to Type 158 and c...

2 months ago
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RE: Type 47 and Type 48. Battery and inverter compability

@tobiaaas I did notice that Type 47b has a default cell energy capacity much lower than the battery in the WindDieselPV example (16.7 Ah x ~2.5 V &...

3 months ago
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RE: Type 47 and Type 48. Battery and inverter compability

@tobiaaas, I think that might be a typo in the 10-Examples.pdf that suggests inverter mode 0 pairs with battery mode 1. I don't think there's a c...

3 months ago
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