[TRNSYS-users] Unit Mismatch

David BRADLEY d.bradley at tess-inc.com
Thu Mar 19 09:54:33 PDT 2015


Stefan,
  It depends a bit on how you are converting your units. If you are 
writing a block of equations to convert units then equations have no 
units by default. You can assign units to an equation by using the 
3-letter codes as in:

mDot = 45 {MF1}

the three letter code MF1 indicates a mass flow rate in kg/h.

  If you have checked your simulation and all the connections have units 
that match one another then you can ignore the warning. It may be that 
some of the Types you are using are not setting their own three letter 
input and output unit codes.
best,
  David


On 3/17/2015 05:44, Stefan Hampel wrote:
> Hey together,
> i use a unit conversion routine in my projects and allways get Unit 
> mismatch warnings when i watch the listfile after a simulation. Ive 
> checked it again and again but for me it seems to be all correct.
> Then ive watched some Trnsys-examples with an Unit-Conversion Routine 
> included and found similar warnings after a Simulation.
> Is there a general Problem with the Routine or do i get something 
> totally wrong?
>
>
> Best regards
>
> Stefan
>
>
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-- 
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
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
http://www.trnsys.com

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