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.
Last seen: Jul 11, 2025
@shamsoddinghiami The tempering valve might give you the signal that you're looking for. It calculates the fraction of flow that needs to go through...
@mohammedzaoui Mohammed, I am not sure that I entirely understand the pipe layout that you are trying to achieve. The figure you drew (conf2.png) ...
@yuichiyasuda This is a nice addition to TRNSYS! Thank you for developing it and letting the community know about it! kind regards, david
@mohammedzaoui If you have not already done so, I would recommend looking at the "hints and tips" section of the Type999 documentation (located in ....
@shamsoddinghiami mathematically speaking, you could use either one as they both have the same end effect. I would recommend setting leaving the scale...
@chushunzhou I think you may just have to click on the name of the NTYPE that you have selected in the list in the lower left hand side of the windo...
@gasperbrunskole Gašper, any of the tank models that have mentioned been mentioned in this thread will work for your application. Type158 would be a...
@mastah You are correct that both the Base Toolkit and the HPC Toolkit are required.
@rodrigo There are a few radiator components available in the TESS HVAC library. I would try Type1231 and I would put one in each room that the syste...
@rodrigo yes, that is the correct procedure. If printing/scanning is a pain, you can just send an email with the pertinent information to techsupport@...
@mastah as a side note, we are working on updating the TRNSYS coding so that future versions will be compatible with the IFX compiler.
@gehadrabee24 It sounds as though you changed the Type534 proforma so as to redesignate one or more derivatives as parameters. There are two ways to r...
@srhayri additionally, you can treat the layer as though it were only resistive rather than having thermal mass. You can then account for the thermal...
Type1531 and 957 are both TESS components. You can contact the developer by emailing techsupport@tess-inc.com. Type1531 was written for Trnsys v18....
@gehadrabee24 I am not sure I understand your question. To set the initial temperature of the tank you open the tank model's proforma, switch to the "...