[EnergyPlus_Support] Re: Schedule 10001 - Output Value is time shifted

["jeannieboef" <jeannieboef@xxxxxxxxx>]

Hi James.

1. I'm going to replace the "Always On" schedule with a "binarized occupation schedule". 

(although I now know that if e+ expects a 1/0 schedule and sees a fractional, for example occupation schedule, it will automatically assume all non-zeros to be 1 and zeros to be zero, so I could use the occupation schedule here)

I wanted to maintain the abillity of the fan availibility to turn on and off on schedule and when availible and on, deliver a constant volume. It should cycle on and off to meet both the minimum air and room loads as required during its availibillity on time.

2. Yes, this manager is not used, but I thought to keep it if it became apparent that it is needed at a future stage. I will try and delete this manager (which overides scheduled values as specified) as it maybe suppressing ventilation during "darkness hours". Good thinking.

3. The ODA controller is auto-sizing to the correct value (checked it). More over I checked with this also manually set (no difference), so that was not the problem. I don't want the master of the auto-sizing to become irrelivant, as I'd rather adjust as little inputs as nessesary, so that's why I left this on auto.

Well spotted. Thanks for the input. 

Could you figure out why my PEOPLE sensible heat gains and occupation seem to start earlier than the 10001 occupation schedule suggests?

The day schedule is set up in 30min intervals. I have the feeling something is interpolating backwards.

Kind regards,

jean.

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "James V Dirkes II, PE" <jim@...> wrote:
>
> Dear Jean,
> 
>  
> 
> A quick review suggests that you look at:
> 
>  
> 
> 1.       You are using an On/Off fan.  The fan uses an "Always on" schedule,
> but the nature of this fan is to cycle on and off as needed for building
> loads.
> 
> 2.       You are also using AvailabilityManager:NightCycle set for
> "StayOff".  Normally this means that your fan will never operate at night.
> I'm not sure what happens with an OnOff fan ., but you might get rid of this
> manager since it does not apply to your situation.
> 
> 
> 
> 3.       Finally, you are autosizing minimum outdoor air in the
> Controller:Outdoor Air. I'd be inclined to set the minimum at a non-zero
> value or create a minimum fraction or schedule for outdoor air.
> 
>  
> 
>  
> 
>  
> 
>  
> 
>  
> 
> The Building Performance Team
> James V. Dirkes II, P.E., LEED AP
> 1631 Acacia Drive NW
> Grand Rapids, MI 49504
> 616 450 8653
> 
>  
> 
> From: EnergyPlus_Support@xxxxxxxxxxxxxxx
> [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of jeannieboef
> Sent: Friday, October 15, 2010 3:46 AM
> To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> Subject: [EnergyPlus_Support] Re: Schedule 10001 - Output Value is time
> shifted
> 
>  
> 
>   
> 
> Thank you Dr. Li,
> 
> You're right. The only reason the schedule is "any number" not "fraction"
> and this complicated is because this is the output from designbuilder. I use
> the graphics from designbuilder in my simulation report which explain the
> schedule much nicer than the syntax of a Schedule:Compact object. As to the
> time shift...I'm still at a loss. I use xEsoView to check the outputs in the
> eso file. Therefore I specified the Schedule Output Values for both hourly
> and timestep. Looking at the timestep values I still don't under stand why
> it doesn't start with the day schedule time.
> 
> I've posted the idf in the user exchange area.
> 
> My other problem is that the specified min ODA is not happening, and I can't
> figure out why (It should be constantly on night and day).
> 
> Regards,
> 
> Jean
>




------------------------------------

Primary EnergyPlus support is found at:
http://energyplus.helpserve.com or send a message to energyplus-support@xxxxxxxx

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 currently allowed but be mindful that not everyone has a high speed connection.  Limit attachments to small files.

EnergyPlus Documentation is searchable.  Open EPlusMainMenu.pdf under the Documentation link and press the "search" button.
Yahoo! Groups Links

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

<*> Your email settings:
    Individual Email | Traditional

<*> To change settings online go to:
    http://groups.yahoo.com/group/EnergyPlus_Support/join
    (Yahoo! ID required)

<*> To change settings via email:
    EnergyPlus_Support-digest@xxxxxxxxxxxxxxx 
    EnergyPlus_Support-fullfeatured@xxxxxxxxxxxxxxx

<*> 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/