[TRNSYS-users] Load profile / Daily load

David Bradley bradley at tess-inc.com
Tue Jul 21 13:23:04 PDT 2009


Marcos,
  The "load profile" is Type14, a forcing function that outputs a value 
as a function of time. The Type14 proforma has units associated with the 
values but in reality the forcing function could be used for 
temperatures, energy, flow rates, or (as is the case in that example) 
fractions. In the example, Type14 is outputting the fraction of the 
total daily load that is being drawn during each hour of the day. That 
fraction is then passed to the equation, where the fraction is being 
multiplied by the total.
Kind regards,
 David
 

dias.marcos at portugalmail.pt wrote:
> Hi,
>
> I'm havin a problem using the Solar Thermal project.
> In this kind of projects, there are 2 items included: "load profile"  
> and "daily load". In the load profile we must include the water  
> consumption in an time interval. For example fro 7 to 9 we have 0.2  
> kg/h. This means that in the 2 hours the total consumption is 0.2 kg  
> of water...
> But, wen we open the "Daily load", we can see the function that tell  
> us that mdDHW=DHWProfile*200, being the number 200, the daily  
> consumption.
> So, i'm finding this a bit confuse. If we have in the "Load profile",  
> the water draw for each time interval during the 24h, we have the  
> total daily consumption. So, why is there this calculation?????
>
>
> Thanks for the attention!
>
> Best regards,
> Marcos Dias
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>
>   

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