Re: [EnergyPlus_Support] Re: Ventilation sistem without return air

[Don Shirey <shirey@xxxxxxxxxxxx>]

See Energy Recovery Ventilator:Stand Alone   (under Group - Zone Forced 
Air Units) and see if this meets your needs.

Elmer Morrissey wrote:

> Hi Natasa
>
> I ran into this problem a few weeks back... it's quite easy to fix.
> Everything in EnergyPlus is set up in loops. So all you have to do is
> set up your air loop to `look' like another typical loop.
>
> The loop will resemble a situation where the return air is fed
> straight into the supply fans etc. However, you attach an Outside Air
> System to the beginning of this loop along with a rotary wheel
> (examples can be found bundled with E+). All you have to do now is
> force the air to not mix by setting the minimum and maximum outside
> air intake in the Outside Air Controller to be the same level. If you
> do this, you will get no mixing of the return and fresh air.
>
> Note: if you want to bypass the thermal wheel in certain conditions,
> this is controlled from the OA controller too. It is well documented
> in the input/output reference (something I missed at the time!!!!)
>
> Hope this helps.
>
> Kind regards
>
> -Elmer
>
>
> --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "natasamdj" <natasamdj@...>
> wrote:
> >
> > Dear,
> > I am trying to develop the model of ventilation with heat recuperation
> > but without mixing with the return air. I am planning to apply the
> > rotating heat exchanger. My problem is because everywhere in Energy
> > Plus for defining the air path, there are fields for return air. The
> > exhaust air from the zone should be forced through rotating heat
> > exchanger. I do not want to have air mixing of outside air and exhaust
> > air. But everywhere in Energy Plus there are the fields for return
> > air. I passed through some of examples from new version 1.2.3, but I
> > could not find the example about that.
> >
> > Please can you give me some advice how to model the ventilation
> > without air mixing? I will continue to work on it, and maybe I will
> > have some more specific question in future.
> >
> > Thank you in advance
> >
> > Natasa M.Djuric





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