I did something similar last year, but I had to use a
thermostat. I used a purchased air system and fixed the supply air flow
and the discharge temperature. Then set the thermostat to an unattainable
temperature. In my case there was never enough flow to meet the cooling
load conditions, so the zone floated with the external load. Internal
mass and the mass surface area play a large role in the resulting floating
temperature conditions.
Now there may be a problem with setting and appropriate
temperature for your simulation. Perhaps having a second zone controlled
to your supply temperature and using mixing to move conditioned air to your
zone of interest will work.
Ned
Lyon, P.E. (MA)
Staff Consultant
SIMPSON
GUMPERTZ & HEGER
781.907.9000 main
781.907.9350 direct
781.907.9009 fax
www.sgh.com
From:
EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On
Behalf Of csagerschnig
Sent: Monday, May 04, 2009 6:25 AM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: [EnergyPlus_Support] Constant Supply Air Flow without
ZoneControl:Thermostat
Dear all,
I am looking for a simple way to simulate a room supplied with a constant air
flow (at a fixed temperature) without using ZoneControl:Thermostat.
I do not want to use a zone heating/cooling setpoint but rather see the effects
of the supplied air on a free floating zone temperature.
Thanks for your ideas on this one!
Regards,
Carina
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