I am a little confused myself but if you look at the schedule values for__._,_.___
HTG/COOL AVAILABILITY:Schedule Value you will see that the value goes
to 0 just after 18:00 in winter and just after 17:00 in summer. This is
why the Purchased Air system is turning off. Why this is happening will
need more time to figure out. You could try using a different schedule
name for the cooling availability schedule to see if you can get the
cooling to turn on from 7:00 to 18:00.
PURCHASED AIR,
SALA PRINCIPAL Purchased Air, !- Purchased Air Name
SALA PRINCIPAL Supply Inlet, !- Zone Supply Air Node Name
50, !- Heating Supply Air Temp {C}
13, !- Cooling Supply Air Temp {C}
0.008, !- Heating Supply Air Humidity Ratio
{kg-H2O/kg-air}
0.009, !- Cooling Supply Air Humidity Ratio
{kg-H2O/kg-air}
NO LIMIT, !- heating limit
, !- Maximum heating air flow rate {m3/s}
NO LIMIT, !- cooling limit
, !- Maximum cooling air flow rate {m3/s}
NO OUTSIDE AIR, !- outside air
, !- Outside air flow rate {m3/s}
HTG/COOL AVAILABILITY, !- heating availability schedule
HTG/COOL AVAILABILITY; !- cooling availability schedule
PURCHASED AIR,
SALA SECUNDARIA Purchased Air, !- Purchased Air Name
SALA SECUNDARIA Supply Inlet, !- Zone Supply Air Node Name
50, !- Heating Supply Air Temp {C}
13, !- Cooling Supply Air Temp {C}
0.008, !- Heating Supply Air Humidity Ratio
{kg-H2O/kg-air}
0.009, !- Cooling Supply Air Humidity Ratio
{kg-H2O/kg-air}
NO LIMIT, !- heating limit
, !- Maximum heating air flow rate {m3/s}
NO LIMIT, !- cooling limit
, !- Maximum cooling air flow rate {m3/s}
NO OUTSIDE AIR, !- outside air
, !- Outside air flow rate {m3/s}
HTG/COOL AVAILABILITY, !- heating availability schedule
HTG/COOL AVAILABILITY; !- cooling availability schedule
SCHEDULE:COMPACT,
HTG/COOL AVAILABILITY, !- Name
Any Number, !- ScheduleType
Through: 12/31, !- Complex Field #1
For: AllDays, !- Complex Field #2
Until: 7:00, !- Complex Field #3
0, !- Complex Field #4
Until:18:00, !- Complex Field #5
1, !- Complex Field #6
Until:24:00, !- Complex Field #7
0; !- Complex Field #8
.
Nuno Costa Brandão wrote:
>
> Dear All,
>
> I´m simulating a small building building museum in order to evaluate
> it´s rehabilitation. The building has two zones with heat/cool
> setpoint control (20-25ºC).
>
> The results show that in the Winter the control is effectively
> guarantee within the pretended period (8:00-18:00), but when analysing
> Summer the control defined with a heat/cool availability schedule, is
> only guaranteed from 8:00 to 17:00 although both Winter and Summer are
> affected with the same schedule. I have verified the schedules and
> they are perfectly defined. Can you please take a look to my idf file
> to give some guidance help?
>
> Thanks,
> Nuno
>
>
--
Richard A. Raustad
Senior Research Engineer
Florida Solar Energy Center
University of Central Florida
1679 Clearlake Road
Cocoa, FL 32922-5703
Phone: (321) 638-1454
Fax: (321) 638-1439 or 1010
Visit our web site at: http://www.fsec.ucf.edu
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