Re: [EnergyPlus_Support] Re: Mimicking occupant behaviour

On 15 May 2013 14:27, Jean Marais <jeannieboef@xxxxxxxxx> wrote:

Since I can't modulate the openings, I have found a good compromise for big windows is setting the opening factors for all openable windows at 10%. This reduces the ACHs from 40 to 4 or 6 depending on winter or summer conditions. Attached is a somewhat improved model.

I'm going to implement this on a big model soon using macros to set up the EMS per zone. If you'd like it let me know.
Regards,
Jean.

On 15 May 2013 11:32, Jean Marais <jeannieboef@xxxxxxxxx> wrote:

Hi Lixing,
Here is my test file for window opening. The results are good at the current settings, however, as stated before, this would be better if I could modulate the window opening factor at zonelevel based on infiltration velocity or ACH.

The EMS with the logic is at the bottom of the idf section.
Kind regards,
Jean

On 14 May 2013 22:34, Lixing Gu <gu@xxxxxxxxxxxx> wrote:

Jean:

Yes. Your understanding is correct. The modulation is not available for
Constant Control, because the Constant Control does not have any sensor
ranges to be modulated. It is a user control. A possible improvement is to
allow a schedule, so that users have a choice to vary opening values with
time.

Unfortunately, the current EMS override is surface based. It is possible to
allow zone level control using EMS.

Hope this helps.

Lixing

-----Original Message-----
From: EnergyPlus_Support@xxxxxxxxxxxxxxx
[mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of Jean marais
Sent: Tuesday, May 14, 2013 8:50 AM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: [EnergyPlus_Support] Re: Mimicking occupant behaviour - Window
opening

I've got some innitial results.
Q1) I would like to modulate the opening fraction at zone level similarly to
AirFlow Network Window/Door Opening,Venting Opening Factor,[Fraction] (at
surface level), but it seems this is only possible with Temperature control
not Constant control. What do you think?

I would like to modulate because at large inside/outside dTs there are huge
ACH taking place. The key here is zonelevel control.

regards,
Jean.

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Re: [EnergyPlus_Support] Re: Mimicking occupant behaviour - Window opening