[EnergyPlus_Support] Re: sizing factor

["pizzaalan" <pizzaalan@xxxxxxxxx>]

When I choose 1.2 and only simulate the design days, the 
temperatures of some zone don't reach to the setpoint. The design 
days is described as follows, and schedule and sizing parameter 
should be Ok because I just copied from example file, "5ZoneAuto".
Any suggestion? Thank you.

DesignDay,
    Minneapolis Winter,      !- DesignDayName
    -26.7,                   !- Maximum Dry-Bulb Temperature {C}
    0,                       !- Daily Temperature Range {deltaC}
    -26.7,                   !- Humidity Indicating Temperature at 
Max Temp {C}
    98302,                   !- Barometric Pressure {Pa}
    11.775,                  !- Wind Speed {m/s}
    323,                     !- Wind Direction {deg}
    .5,                      !- Sky Clearness
    0,                       !- Rain Indicator
    0,                       !- Snow Indicator
    21,                      !- Day Of Month
    1,                       !- Month
    WinterDesignDay,         !- Day Type
    0,                       !- Daylight Saving Time Indicator
    Wet-Bulb;                !- Humidity Indicating Temperature Type

DesignDay,
    Minneapolis Summer,      !- DesignDayName
    33.3,                    !- Maximum Dry-Bulb Temperature {C}
    12.2,                    !- Daily Temperature Range {deltaC}
    23.8,                    !- Humidity Indicating Temperature at 
Max Temp {C}
    98302,                   !- Barometric Pressure {Pa}
    3.8,                     !- Wind Speed {m/s}
    213,                     !- Wind Direction {deg}
    .98,                     !- Sky Clearness
    0,                       !- Rain Indicator
    0,                       !- Snow Indicator
    21,                      !- Day Of Month
    7,                       !- Month
    SummerDesignDay,         !- Day Type
    0,                       !- Daylight Saving Time Indicator
    Wet-Bulb;                !- Humidity Indicating Temperature Type
 

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Griffith, Brent" 
<brent_griffith@n...> wrote:
> 1.2 is a reasonable value. Think of it as a safety factor for HVAC 
sizing. 
> It can be the case that loads encountered sometime during an 
annual run are higher than those during design day runs. 
> But you should check that there isn't something wrong with your 
design days, schedules, or autosizing commands.   
> 
> -----Original Message-----
> From: pizzaalan [mailto:pizzaalan@y...]
> Sent: Tuesday, July 13, 2004 4:50 PM
> To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> Subject: [EnergyPlus_Support] sizing factor
> 
> 
> I simulated a building and found that some zone temperatures 
didn't 
> reach to the setpoint. Then I tried to increase the sizing factor, 
> zone temperatures met the setpoint. Anyone can tell me what is the 
> function of sizing factor, what value is reasonable? 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 Sponsor	
> 
> ADVERTISEMENT
>  
<http://us.ard.yahoo.com/SIG=129jiqsrh/M=295196.4901138.6071305.30011
76/D=groups/S=1705007389:HM/EXP=1089845487/A=2128215/R=0/SIG=10se96mf
6/*http://companion.yahoo.com> click here	
>   <http://us.adserver.yahoo.com/l?
M=295196.4901138.6071305.3001176/D=groups/S=:HM/A=2128215/rand=307459
847> 	
> 
> 
>   _____  
> 
> 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 
<mailto:EnergyPlus_Support-unsubscribe@xxxxxxxxxxxxxxx?
subject=Unsubscribe> 
>   
> 
> *	Your use of Yahoo! Groups is subject to the Yahoo! Terms of 
Service <http://docs.yahoo.com/info/terms/> . 
> 
> 
> 
> 
> [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/