Re: [EnergyPlus_Support] Flow rate

["Michael J. Witte" <mjwitte@xxxxxxxx>]

No.  It uses the design days to determine the peak loads, and then it will a 
whole year (RunPeriod) using the autosized values.  See the RUN CONTROL object 
for details.

Mike


On 3 Jun 2004, at 13:08, Meng Zhang wrote:

> Hi, Michael,
> 
> Thank you for your help. I am thinking to use "zone, system and plant sizing" to
> get the flow rates. Do you think it is possible?  It seems that "sizing " is
> just for design days. If I want to run system like a whole year, I have to
> specify all the flow rates by hand. Is it right?
> 
> Sincerely,
> Alan
> 
> "Michael J. Witte" <mjwitte@xxxxxxxx> wrote:
> The max flow rate in the air loop main branch is usually set to equal the sum of
> the max flow rates of the terminal units.  In your case, if you air loop serves
> a single zone, then the max flow rate should equal the max damper air flow rate
> of 0.47 m3/s.  The fan max flow rate should be the same.  The fan min flow rate
> is set by the min flow rate of the terminal untis.  This is all just continuity.
>  Look at your system diagram and once you know the flow rates of the terminal
> units, then you can figure out the flow rates for the other components.  Or you
> can use the sizing features to set these values for you.
> 
> Mike
> 
> 
> On 2 Jun 2004, at 9:03, pizzaalan wrote:
> 
> > Hi,
> > 
> > I am not sure how to choose max flow rate for air loop main branch, 
> > (1.3 m3/s in example), max plant loop volumetric flow rate (0.0011 
> > m3/s in example), max damper air flow rate (0.47 m3/s).
> > 
> > Also, I am not sure how to pick up pump ( pump head? rated 
> > volumetric flow rate), Fan max & min flow rate?
> > 
> > I will appreciate if anyone gives me a guide. Thanks.
> > 
> > Alan 
> > 
> > 
> > 
> > 
> > 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 not allowed -- please post any files to the appropriate folder
> > in the Files area of the Support Web Site.
> > 
> > Yahoo! Groups Links
> > 
> > 
> > 
> > 
> > 
> > 
> 
> 
> 
> ========================================================
> Michael J. Witte, GARD Analytics, Inc.
> EnergyPlus Testing and Support      
> EnergyPlus-Support@xxxxxxxx
> 
> 
> 
> The primary EnergyPlus web site is found at:
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