Re: [EnergyPlus_Support] Re: how to change the outdoor air flow rate?

["Edwin Lee" <leeed2001@xxxxxxxxx>]

I'm pretty sure EnergyPlus won't interact with software like Matlab during a simulation, however, if you know the schedule for outdoor air at different time steps (hours), you can use an external file to feed E+ hourly data once at the beginning of the simulation.

Edwin

On Sun, Jan 18, 2009 at 4:10 PM, yunpeng.hu <yunpeng.hu@yahoo.com> wrote:

Why do I want EnergyPlus to INTERACT with MATLAB, FORTRAN or others
program language?
I just want to change the flow rate by myself, becasue I need the
flow rate to change in certain timesteps. I want to know how the
temperature changes in a given air flow rate in a VAV system, but the
Energyplus always, in my opinion, give the trend of air flow rate to
meet the zone setpoint.
Maybe what I say has some misunderstanding, please point out!
I will try my best to make it clear.
Thanks a lot!

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, D T <ellinas.1984@...>
wrote:

>
> To address your last question, whether EnergyPlus interacts with
any software, I know that there are software programs you can use to
draw up a building and define building geometry and dimensions. You
can then export these files to EnergyPlus. From personal experience,
I know that you can specifically use DesignBuilder (a graphic user
interface software package compatible w/ EnergyPlus) to draw the
facility and define the loads for your building and then export the
idf file to EnergyPlus. I know that there is also a plugin program
that lets you define building geometry as well (but I don't know too
much about it). But, to my knowledge, I do not think that EnergyPlus
is capable of interacting with programs such as MATLAB as you
mention. Honestly, I do not understand why you would need EnergyPlus
to interact with MATLAB.
> ?> -Dimos Triantafillu
>
>

> --- On Sat, 1/17/09, yunpeng.hu <yunpeng.hu@...> wrote:
>
> From: yunpeng.hu <yunpeng.hu@...>

> Subject: [EnergyPlus_Support] how to change the outdoor air flow
rate?
> To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> Date: Saturday, January 17, 2009, 10:50 PM
>
>
>
>
>
>
> Hi,all.
> I've defined the "Outdoor Air method" as the "sum" in the
sizing:zone,
> and set the "100% Outdoor Air in Cooling" as "yes". What's more
> the "Minimum / Maximum fraction of Outdoor Air Schedule" is all the
> same£¬¡°1¡±¡£
> But the outdoor air flow rate can't change with the Occupy
Schedule.
> I've given the "Outdoor Air Flow Per Person", of course, in
> the "Sizing:Zone" .
> Why the outdoor air flow rate can not change with the Occupy
Schedule?
>
> By the way, does EPlus interact with other softwrae, just like
Matlab
> or others?
>
> Thanks!
>

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