It seems that the 0.175 value should be met. Is the fan on? (If
not, there will be no flow)
You might try setting the outdoor air fields in Sizing:Zone
The Building Performance Team
James V. Dirkes II, P.E., LEED AP
1631 Acacia Drive NW
Grand Rapids, MI 49504
616 450 8653
From: EnergyPlus_Support@xxxxxxxxxxxxxxx
[mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of jeannieboef
Sent: Tuesday, September 07, 2010 3:43 AM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: [EnergyPlus_Support] Min ODA rate is not being met?
Min ODA rate is not being met. Resulting airflow is 0.03 m3/s
which is smaller than the 0.175 Min ODA rate input in the sizing object.
Any idea why?
!JMM VENTILATION 118204
Sizing:System,
118204 AHU, !- AirLoop Name
Sensible, !- Type of Load to Size On
0.175000, !- Design (minimum) outside air volumetric flow rate {m3/s} !630
m3/hr
1, !- Minimum System Air Flow Ratio
7, !- Preheat design set temperature {C}
0.008, !- Preheat design humidity ratio {kg-H2O/kg-air}
11, !- Precool design temperature {C}
0.008, !- Precool design humidity ratio {kg-H2O/kg-air}
13, !- Central cooling design supply air temperature {C} ! For cooling room
setpoint 24°C as per G3.1.2.8 deltaT = 11°C
32, !- Central heating design supply air temperature {C} ! For heating room
setpoint 21°C as per G3.1.2.8 deltaT = 11°C
NonCoincident, !- Sizing Option
No, !- 100% Outdoor Air in Cooling
No, !- 100% Outdoor Air in Heating
0.008, !- Central cooling design supply air humidity ratio {kg-H2O/kg-air}
0.008, !- Central heating design supply air humidity ratio {kg-H2O/kg-air}
DesignDay, !- Cooling Design Air Flow Method
0, !- cooling design air flow rate {m3/s}
DesignDay, !- Heating Design Air Flow Method
0; !- heating design air flow rate {m3/s}
__._,_.___
Primary EnergyPlus support is found at:
http://energyplus.helpserve.com or send a message to energyplus-support@xxxxxxxx
The primary EnergyPlus web site is found at:
http://www.energyplus.gov
The group web site is:
http://groups.yahoo.com/group/EnergyPlus_Support/
Attachments are currently allowed but be mindful that not everyone has a high speed connection. Limit attachments to small files.
EnergyPlus Documentation is searchable. Open EPlusMainMenu.pdf under the Documentation link and press the "search" button.
Change settings via the Web (Yahoo! ID required)
Change settings via email: Switch delivery to Daily Digest | Switch to Fully Featured
Visit Your Group | Yahoo! Groups Terms of Use | Unsubscribe
__,_._,___