[labnetwork] Pirnaha Exhaust Condensation

[April, Mark R.]

Hi Adam,
I agree with  Mr. Paolini, here at Draper we use the same type of duct work he has mentioned and we do not have any issues.
Good Luck


Mark R. April
Senior  Equipment Engineer
Microfabrication Laboratory
[color_logo_small4]
555 Technology Square
Cambridge, MA  02139
mapril at draper.com<mailto:mapril at draper.com>
O # 617-258-1613 C # 617-455-1596
www.draper.com<http://www.draper.com/>



From: labnetwork <labnetwork-bounces at mtl.mit.edu> On Behalf Of Paolini, Steven
Sent: Tuesday, June 14, 2022 6:13 PM
To: Adam Pettigrew <apettigr at ualberta.ca>; labnetwork at mtl.mit.edu
Subject: Re: [labnetwork] Pirnaha Exhaust Condensation

Adam,
  The transition fitting going from round to square should have been fabricated to fit inside the square plenum opening of the hood. It should not need any type of sealant or tape. Hot sulfuric fumes will eventually eat through any material except for Teflon lined PSP ducting or Polypropylene/Polyethylene.
That ductwork looks a lot like welded stainless without a Teflon coating. I say this because there are very few joints and it does not seem serviceable. Contact me directly by phone or Email, The solution is not very pleasant to hear.
  Equipment Dood

Steve Paolini
Principal Equipment Engineer
Harvard University Center for Nanoscale Systems
11 Oxford St.
Cambridge, MA 02138
617- 496- 9816
spaolini at cns.fas.harvard.edu<mailto:spaolini at cns.fas.harvard.edu>
www.cns.fas.harvard.edu<http://www.cns.fas.harvard.edu>

From: labnetwork <labnetwork-bounces at mtl.mit.edu<mailto:labnetwork-bounces at mtl.mit.edu>> On Behalf Of Adam Pettigrew
Sent: Tuesday, June 14, 2022 12:11 PM
To: labnetwork at mtl.mit.edu<mailto:labnetwork at mtl.mit.edu>
Subject: [labnetwork] Pirnaha Exhaust Condensation

Hello everyone,

We are having issues with our exhaust ducting from our piranha deck. We have a connection where it attaches to the main ducting which is caulked and taped but it seems that no matter what we seal it with, piranha which has condensed in the ducting, eats through it. I am wondering if anyone uses a filter/screen of some kind to condense the vapours before going out the exhaust line. Thanks in advance for any advice!

Regards,
Adam

[cid:image002.jpg at 01D8807A.7EA33420]

--

Adam Pettigrew

Systems Technician

University of Alberta - nanoFAB

W1-028A ECERF Building

9107 - 116 Street

Edmonton, Alberta

Canada T6G 2V4 Ph: 587-879-1514
www.nanofab.ualberta.ca<https://urldefense.proofpoint.com/v2/url?u=http-3A__www.nanofab.ualberta.ca_&d=DwMFaQ&c=WO-RGvefibhHBZq3fL85hQ&r=-H4Z_jeDfTYjnKPXor15vLwzBllmg8gFrb9m_k9OGks&m=3LcSj68dnIOzirYcLEVklldxwa9Xiuu8cJr4uEl-kBV4WAU-87rkcDNi2mO7tgzP&s=eZY9vWGHDm229ciL2SxXMo7RqaABTmI9uGRHQhj7pMk&e=>
________________________________
Notice: This email and any attachments may contain proprietary (Draper non-public) and/or export-controlled information of Draper. If you are not the intended recipient of this email, please immediately notify the sender by replying to this email and immediately destroy all copies of this email.
________________________________
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mtl.mit.edu/pipermail/labnetwork/attachments/20220615/f1d14072/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image001.png
Type: image/png
Size: 1560 bytes
Desc: image001.png
URL: <https://mtl.mit.edu/pipermail/labnetwork/attachments/20220615/f1d14072/attachment.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image002.jpg
Type: image/jpeg
Size: 36255 bytes
Desc: image002.jpg
URL: <https://mtl.mit.edu/pipermail/labnetwork/attachments/20220615/f1d14072/attachment.jpg>