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:
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
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
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