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RE: [EnergyPlus_Support] Volume of the plant loop
Hi,
Volume of the plant loop helps in establishing the stability in the solution. It in a sense models the transient behaviour in the system. It does this by lagging the demand side inlet temperature to the supply side outlet temperature by an amount dependant on the volume of the loop, and system time step. The method used to model this transience is explained in detail in EnergyPlus Engineering Documentation. During simulation, if the volume of the loop you entered is not enough for stability, EnergyPlus produces an warning error and resets the volume to the minimum volume for stability.
If the plant cannot meet the load, the unmet load is reflected as increased temperatures for next time step. It can also be reported for each system time step/time step/hourly.
S.K.Padhmanabhan
Research Associate
Mechanical & Aerospace Engineering
Oklahoma State University,
Stillwater, OK - 74075
Ph: (405)744-1038
-----Original Message-----
From: EnergyPlus_Support@xxxxxxxxxxxxxxx on behalf of energypluser
Sent: Wed 6/22/2005 10:01 PM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: [EnergyPlus_Support] Volume of the plant loop
Dear all
What does the volume of the plant loop consider for?
Does it have an influence on the convergency between the plant demand
side and the plant supply side?
If the plant cannot meet the load, will E+ consider the accumulation of
the unmet load ?
Thank you in advance
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