[TRNSYS-users] HELP-

[David BRADLEY]

Susana,

  TRNSYS has boolean functions that you can use. The function LT(x,y) 
will return a 1 if x < y and a 0 otherwise. Typically you can use those 
functions to construct more complex functions. For instance you could do:

result = A*LT(v,8) + B*GE(v,8)

kind regards,

  David


On 01/03/2022 06:24, SUSANA LAGE CAL via TRNSYS-users wrote:
>
> Hello, everybody
>
> Happy New Year!
>
> I am in the middle of the process of introducing external *h 
> convection parameter* in my building simulation.
>
> Nevertheless, formulas are not always the same: They vary with wind 
> velocity. And I do not know how to *introduce such conditionial 
>  condition in a Trnsys Equation*.
>
> If wind velocity limit was 8 m/s, the formula would be A for v< 8 m/s 
> and B for v>8 m/s: If we were to work with Excel, solution could be 
> easily found by writing: =IF (v_CELL<8;A;B). But, *how can I possibly 
> such replicate by means of an Equation?*
>
> Hope any of you can help me
>
> Best regards
>
>
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> TRNSYS-users at lists.onebuilding.org
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-- 
***************************
David BRADLEY
Principal
Thermal Energy System Specialists, LLC
3 North Pinckney Street - suite 202
Madison, WI  53703 USA

P:+1.608.274.2577
d.bradley at tess-inc.com

http://www.tess-inc.com
http://www.trnsys.com
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