|
Assuming you are using EQuest based software
you will have difficulty getting this set up the way you want. TAS, Apache
and I suspect TRNSYS and ESP will allow you to set this up the way you want on
the airside.
With EQuest, if you can accept a constant off-coil
temperature from your OA unit then set it up this way to guarantee humidity
control, even reheat it to say 15C for a chilled beam system using a CW heat
recovery coil and then pass this air to your main system using
OA-FROM-SYSTEM. I have done this and checked hourly reports throughly - it
works.
The problems arise if you want to control your OA
unit off-coil temperature on space humidity. You will never get this just
righ but you can try some approximations by setting the OA unit SAT on an
outdoor air reset schedule and tune the reset parameters to get your space
humidity levels where you want - iteratively lookign at hourly reports or
possibly system humidity reports.
EQuest / DOE-2.2 are brilliant simulation tools
that we enjoy for free. I have been trying unsuccessfully in
Australia to raise $ to get a few simple fixes made to the IU system humidity
and heating controls that other systems with dewpoint control may also benefit
from. If anyone can see the value of making
a financial contribution to enable Jeff Hirsch and his team to add more
functionality in this area please contact Jeff or I.
Regards,
Graham
=====================================================You received this e-mail because you are subscribed to the BLDG-SIM@xxxxxxxx mailing list. To unsubscribe from this mailing list send a blank message to BLDG-SIM-UNSUBSCRIBE@xxxxxxxx |