[Bldg-sim] Modeling fume hood exhausts

[varun kulkarni]

I think it also depends on the software you are using to model a fume hood.
Because if exhaust is specified more than the supply  due to the hood, the
software  may disregard the lower supply and equate the higher value of
exhaust to the supply. I am also trying to  model a VAV exhaust fume hood
and facing a lot of problems doing it. So you have to figure out a way to
control you exhaust by altering your VAV supply.
If you know some other way, please let me know also :)

On Tue, Aug 31, 2010 at 2:23 PM, Sami, Vikram
<Vikram.Sami at perkinswill.com>wrote:

> I think that depends on the total volume of exhaust. I don't have it in
> front of me, but I think if your exhaust is more than a certain amount you
> have to have either energy recovery to fifty percent or vav flow.
>
> Sent from a mobile device
>
>  -----Original Message-----
> From:   Peter Simmonds [mailto:peter.simmonds at ibece.net]
> Sent:   Tuesday, August 31, 2010 12:09 PM Central Standard Time
> To:     bldg-sim at lists.onebuilding.org
> Subject:        [Bldg-sim] Modeling fume hood exhausts
>
> Can anyone tell me when modeling a lab system with fume hoods as to whether
> the baseline systems are to be modeled as constant volume?
>
> (subsequent alternatives will have variable volume fume hoods).
>
>
>
> Peter Simmonds,Ph.D.
> Senior Associate
>
> IBE Consulting Engineers
> 14130 Riverside Drive, Suite 201
> Sherman Oaks, CA 91423
> p: (818) 377-8220 x246 f: (818) 377-8230
>
> www.ibece.com <http://www.ibece.com/>
> Ideas for the built environment
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-- 

Thanks and Best Regards,



Sincerely,

Varun Kulkarni , M.S. , EIT

RMF Engineering

5520, Research Park Drive, Suite 300

Baltimore, MD - 21228



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