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[Solved] Choice of type when modeling hydronic radiators

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Topic starter

Hi,

I would like to model a hydronic radiator, to be used together with type 56. I have found type 1231 in the TESS library, but I have also read about type 362, but I can´t find the latter in the library. Is it appropriate to use type 1231, or if type 362 is better, where do I find it? I can´t find any radiator types in the standard library...

Best regards, Johan

1 Answer
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@jolind

Type362 is a radiator model that was written by Transsolar. I have not used it. There is more information about it available at www.trnsys.de (look under add-ons). I have used Type1231 quite a bit, however. In an early version of Type1231 there was a problem if you passed water to the radiator that is colder than the air temperature. That was fixed quite some time ago so if you have access to a recent version of the TESS Libraries, it should be no problem.

~david

 

jolind Topic starter 24/03/2026 4:56 pm

@davidbradley Thanks for your answer. I have TESS libraries version 18.0 (2021-11), so then I hope that Type1231 will work well.
Best regards, Johan

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