[TRNSYS-users] TRNSYS crashes with no error message, but a lot of warnings refering to the PSYCHROMETRICS routine

[C K Lee]

Dear Knut.

My experience is that the most possible causes of so many warnings are 
due to inappropriate fluid mass flowrates and/or insufficient thermal 
capacitances in the fluid streams.  You may trace the problems in these 
directions.

Best Regards
C K Lee
Research Fellow
City University of Hong Kong


On 2019-05-02 21:59, David BRADLEY via TRNSYS-users wrote:
> Knut,
> 
>   In migrating to 64-bit architecture we have run into some situations
> where the 32-bit version managed to get through an iteration while the
> 64-bit version doesn't. Can you please send me the project and all the
> files needed in order to run it so that I can have a look where it is
> getting hung up?
> 
> thank you,
> 
>  David
> 
> On 05/02/2019 04:38, Knut Erik Enerstvedt via TRNSYS-users wrote:
> 
>> Hello,
>> 
>> When running a simulation, TRNEXE crashes after a while without
>> displaying any error message. Usually it pops up a box saying there
>> is an error, but now it just freezes with a "Program not responding"
>> message in the top of the window. When I close the program, the log
>> file window appears. It shows no errors, but a lot of warnings
>> saying that "The referenced UNIT has called the PSYCHROMETRICS
>> routine with conditions outside the intended range of the dew point
>> temperature correlation. The correlation from the 1981 ASHRAE
>> fundamentals handbook is for the temperature range of -60 C to 70
>> C." These warnings refer to units of Type 670 and 995 (TESS heating
>> and cooling coil). I have tried to increase the setting "number of
>> warnings before error" as a work around, since I can't understand
>> why these warnings appear. I also do not know if these warnings are
>> the reason why TRNEXE crashes, since there is no error message
>> saying that they are, but I have no other clues.
>> 
>> I would appreciate if anyone has an idea why this happens. My TRNSYS
>> version is 18.01.0000.
>> 
>> Best regards
>> 
>> Knut Erik Enerstvedt
>> 
>> Gether AS
>> 
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>> 
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>> [1]
> 
> --
> ***************************
> David BRADLEY
> Principal
> Thermal Energy Systems Specialists, LLC
> 3 North Pinckney Street - suite 202
> Madison, WI 53703 USA
> 
> P:+1.608.274.2577
> F:+1.608.278.1475
> d.bradley at tess-inc.com
> 
> http://www.tess-inc.com [2]
> http://www.trnsys.com [3]
> 
> 
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