[TRNSYS-users] Temperature control issue

[David BRADLEY via TRNSYS-users]

Charles,

   I'd recommend that you contact your distributor and include your 
project files as well as a more detailed description of what you mean 
when you say "it does not seem to work out." Is there an error? Are the 
results not what you're expecting? The more detail you can provide them 
with, the better chance they'll be able to help.

kind regards,

  David



On 01/26/2017 09:37, Charles Smith via TRNSYS-users wrote:
>
> Dear TRNSYS users,
>
> I am trying to model a solar water heating system (SWHS) based on some 
> data that I have, but I am facing two problems related to the 
> temperature control.
>
> First, I would like the temperature at outlet of the tank (Type 534) 
> to be greater than or equal to the DHW supply temperature measured 
> every hour (which I read using Type9a from a data file).
>
> Second, I know the supply and return temperatures of the radiant floor 
> as well as the flow rate. So I created an equation to model the 
> radiant floor. The equation takes the temperature at HX outlet (Type 
> 534) and subtract what the radiant floor uses in real life to get the 
> return temperature, which is linked to inlet temperature for HX (Type 
> 534). I would like to use a controller so that the return temperature 
> calculated is never below that measured.
>
> I tried different controllers, but it does not seem to work out. Does 
> anyone can help me please?
>
> Thank you very much.
>
> Best regards,
>
> Charles
>
>
>
> _______________________________________________
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> TRNSYS-users at lists.onebuilding.org
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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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