[labnetwork] Pirnaha Exhaust Condensation

[Paolini, Steven]

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
www.cns.fas.harvard.edu

From: labnetwork <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
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:image003.jpg at 01D8801A.6D08D4F0]

--

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=>
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