From: Debbie Decker <debbie.m.decker**At_Symbol_Here**GMAIL.COM>
Subject: Re: [DCHAS-L] Fume hood article of interest
Date: Tue, 31 Aug 2021 08:49:08 -0700
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>
Message-ID: CABNxZ9fg1iMzFL7wv10umiXzNUtxzO=n2h9uXBn=xp8-VdO7mg**At_Symbol_Here**mail.gmail.com
In-Reply-To <009d01d79e77$ea9662a0$bfc327e0$**At_Symbol_Here**verizon.net>


Closing the sash to obtain energy savings only works when the fume hoods are VAV and part of an engineered lab airflow control system. Constant volume hoods are just that - same amount of conditioned air is exhausted regardless of sash position.

That's not to say closing sashes isn't a good thing!

Cheers,
Debbie

On Tue, Aug 31, 2021, 7:56 AM Richard Palluzi <000006c59248530b-dmarc-request**At_Symbol_Here**lists.princeton.edu> wrote:
Remember though that NFPA 45 recommends you never let it go below 4 ACH even when unoccupied off hours.

And, to add to your comment, I remember saving a lot by simply training our security guards to close any open hood doors that they found during their tours after 7 PM. And record the hood location so the PI could get a gentle - and then not so gentle - reminder until it became a habit.

Richard Palluzi
PE, CSP,FAIChE

Pilot plant and laboratory consulting, safety, design, reviews, and training
www.linkedin.com/in/richardppalluzillc/

Richard P Palluzi LLC
72 Summit Drive
Basking Ridge, NJ 07920
rpalluzi**At_Symbol_Here**verizon.net
908-285-3782

-----Original Message-----
From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU> On Behalf Of Ralph Stuart
Sent: Tuesday, August 31, 2021 10:43 AM
To: DCHAS-L**At_Symbol_Here**Princeton.EDU
Subject: Re: [DCHAS-L] Fume hood article of interest

> >Putting 58 fume hoods to sleep while unused results in substantial energy savings.

Sometime I long for my days in the labs when fume hoods had these things called "on/off switches"…

- Ralph

Ralph Stuart, CIH, CCHO
ralph**At_Symbol_Here**rstuartcih.org

---
For more information about the DCHAS-L e-mail list, contact the Divisional membership chair at membership**At_Symbol_Here**dchas.org Follow us on Twitter **At_Symbol_Here**acsdchas

---
For more information about the DCHAS-L e-mail list, contact the Divisional membership chair at membership**At_Symbol_Here**dchas.org
Follow us on Twitter **At_Symbol_Here**acsdchas
--- For more information about the DCHAS-L e-mail list, contact the Divisional membership chair at membership**At_Symbol_Here**dchas.org Follow us on Twitter **At_Symbol_Here**acsdchas

Previous post   |  Top of Page   |   Next post



The content of this page reflects the personal opinion(s) of the author(s) only, not the American Chemical Society, ILPI, Safety Emporium, or any other party. Use of any information on this page is at the reader's own risk. Unauthorized reproduction of these materials is prohibited. Send questions/comments about the archive to secretary@dchas.org.
The maintenance and hosting of the DCHAS-L archive is provided through the generous support of Safety Emporium.