Thermal bridge PSI calcs

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So far I have not been successful in obtaining the correct results for
PSI value calculation validation examples (EN ISO 10211:2007) using
THERM 6.3, although I have managed to calculate temperatures fairly

Is anyone able to help with a THERM query or alternatively could someone
suggest a better software package for PSI calcs?


Dr Claire Das Bhaumik CEng

Claire Das Bhaumik2's picture
Joined: 2011-10-02
Reputation: 0

Sir -

I recently came across some briefings on PSI analysis using THERM for the North American market re: PassivHaus. The best I saw were from David White at Right Environments.

Not sure if this is relevant (generic v. specific, N Amer v Europe, PH analysis v. others), but perhaps you'll find the below procedures helpful?

Aaron Dahlstrom , PE, LEED(r) AP

Dahlstrom, Aaron2's picture
Joined: 2011-09-30
Reputation: 4

Claire -

You should send a detailed email to me and I will see if we can help you
with your calculations.

Robin Mitchell

Robin Mitchell's picture
Joined: 2011-10-01
Reputation: 0


You may find the following presentation on assessing psi values from
THERM useful


Dr Aizaz A Samuel

Aizaz Samuel's picture
Joined: 2011-10-02
Reputation: 0

You could also beep me up for me to check and let you know the right way and right formula if you did it wrong. I work at excel with bridge and construction company and this is my specialty. I work for this field everyday for 8-10 hours a day. I want to help you and if you are interested, feel free to contact me.

Crystal T. Morrison's picture
Joined: 2013-09-06
Reputation: 0