×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Heating Airstreams with Steam

Heating Airstreams with Steam

Heating Airstreams with Steam

(OP)
I have the challenge of determining how much steam (Lbs/Hr) would be required for the following application.
Underground Pipe Curing
I will be using a Roots, frame size 56 blower indroducing the air stream through a 2.5" pipe/hose into the underground pipe liners. Steam will be introduced into the air stream utilizing pressure, and or a siphoning configuration depending on required bag pressure. (bag = underground liner) The bag pressure changes with the diameter of the bag, more surface volume requires less pressure to inflate the bag. As the pressure requirements increase the blower volume decreases. The pressure range will be ~6.0psig to ~13.4psig. Corresponding, the  blower cfm will range from ~510cfm @ 13.4psig to ~555cfm @ 6.0psig. I need to introduce steam into the air stream at worst case senario (15degF air stream @ 546cfm)in order to heat the air stream to 210degF. Keeping in mind the volocity of the air stream @ 546cfm (and temp) through the 2.5" piping/hose. The boiler will be a 15psig design rated boiler running at 90% of maximum vessel design, or ~13.5psig.(~246.5degF) The curing process involves activating styrene in the bag, heating the entire bag to 105degF. After the end of the bag reaches this temperature the air stream is removed from the process and raw steam is the passed through the bag until curing of the resin is complete(~30 to 45min)
Does anyone have any ideas?

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources