----- Original Message -----
From: "Brent Griffith" <brent.griffith@xxxxxxxx>
To: "EnergyPlus Support" <EnergyPlus_Support@xxxxxxxxxxxxxxx>
Sent: Tuesday, January 26, 2010 6:37:02 PM GMT -05:00 US/Canada Eastern
Subject: RE: [EnergyPlus_Support] A large number of cooling unmet load hours
This sort of thing is usually caused by a mismatch between the parameters used in Sizing:* objects and how the systems actually run during operation. The HVAC controls need to be consistent with the Sizing inputs. For example, check that the node temperatures on the supply deck agree with what is used in the Sizing:Zone design supply air temperature.
From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of john_lee68@xxxxxxxxxxx
Sent: Tuesday, January 26, 2010
3:48 PM
To: EnergyPlus Support
Subject: [EnergyPlus_Support] A
large number of cooling unmet load hours
Hello everyone,
I am simulating an office building with VAV with Reheat. I am getting a large number of unmet cooling load hours. The heating is fine. I am running it for Chicago weather.
TIME COOLING SETPOINT NOT MET {HOURS NON-ZERO} [HOURS]
I am using autosize options. My understanding was that it I use autosize options, the systems would be sized to meet the loads. How should I diagnose this - i.e. which parameters to look at etc..
I help will be very much appreciated...
John
__._,_.___
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
__,_._,___