[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [EnergyPlus_Support] Re: sizing factor

For Winter or Summer?

FYI, It looks like you're using the Design Days from the "BLAST" library 
set.  I'd suggest you use the ones from the USDesignConditions (ASHRAE 2001).

If you understand the ASHRAE design conditions, you may be able to make a 
better choice for your building.

ASHRAE, heating, for example has:

99.6% (still a .4% off the true min/max conditions)
and
99%

The cooling conditions have several more options depending on the kind of 
system/actual conditions that you have.

EnergyPlus makes no "built in" assumptions/safety factors/engineering 
judgment.  Ergo, the sizing factor is used to take the raw/minimal sizing 
(to meet certain conditions) into actual building conditions that would be 
expected to meet actual extreme conditions.

Hope this helps.


At 05:27 PM 7/13/2004, pizzaalan wrote:

>When I choose 1.2 and only simulate the design days, the
>temperatures of some zone don't reach to the setpoint. The design

Linda

EnergyPlus WebSite: http://www.energyplus.gov
Owner: EnergyPlus_Support list
Member: EnergyPlus Development Team



[Non-text portions of this message have been removed]



------------------------ Yahoo! Groups Sponsor --------------------~--> 
Make a clean sweep of pop-up ads. Yahoo! Companion Toolbar.
Now with Pop-Up Blocker. Get it for free!
http://us.click.yahoo.com/L5YrjA/eSIIAA/yQLSAA/dkFolB/TM
--------------------------------------------------------------------~-> 

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

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/EnergyPlus_Support/

<*> To unsubscribe from this group, send an email to:
    EnergyPlus_Support-unsubscribe@xxxxxxxxxxxxxxx

<*> Your use of Yahoo! Groups is subject to:
    http://docs.yahoo.com/info/terms/