[TRNSYS-users] Shading & solar radiation

[David BRADLEY]

Sascha,
   The equation is simply comparing two values; it doesn't know about 
the units. So if Radiation_Input (the output from your weather data 
reader probably - Type99?) is in W/m2 then X also needs to be in W/m2. 
It is more likely that Radiation_Input is in kJ/h.m2 though, in which 
case X also needs to be in kJ/h.m2.
Best,
  David


On 6/15/2012 05:04, Heinze wrote:
>
> Hello again,
>
> i have another question about external shading and the radiation.
>
> I know that it can be controlled with an equation using the radiation 
> as input like:         Radiation_Input ? Equation: 
> =gt(Radiation_Input, *X*) ? Output linked to type 56 Shading
>
> But with the X in the equation i am not sure. I have a german TRY 
> (.dat) weather file and the radiation in this file is already given in 
> W/m². Do i still need to convert this to kJ/hr m² ?
>
> Best regards
>
> Sascha Heinze
>
>
>
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> TRNSYS-users at cae.wisc.edu
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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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