[TRNSYS-users] re-heating after dehumidifcation

[David Bradley]

Thibaut,
 It is not exactly the solution that you are looking for but there is an 
idealized "air stream conditioning" device in the TESS HVAC library. You 
tell the model what the incoming air condition is and you tell it what 
the supply condition that want is (in terms of both temperature and 
humidity) and it figures out all of the required energy (heating, 
cooling, humidification, dehumidification, and reheating). It would mean 
one model per zone but at least you would not have to get into the 
complications of modeling an actual air handler and all its internal pieces.
Kind regards,
 David


Thibaut VITTE wrote:
> Dear Trnsys users,
>
> I have a general question, as I don't know at all how to do this : Take 
> into account the energy of reheating after dehumidification.
> I simulate a building, which is too big and complicated to modellize 
> precisely the hvac equipments. But there is a big need for 
> dehumidification (setpoint 18°C/40%hr for instance) for some zones.
>
> And I don't know how to calcul the re-heating energy without modellizing 
> the AHUs... I don't have any clue of any method (even non precisely) 
> that estimate this energy, which can be quite big.
> Of course I have the sensible energy for cooling and the latent energy 
> for dehumidification, but the reheating energy is not taken into account...
>
> Thanks in advance for any help!
>
> Thibaut Vitte.
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