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GeoffreyBernardo
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Join Date: Oct 2008
Posts: 8
Good Answers: 1

Trace heating

01/25/2010 8:06 AM

Is 1/4" in tubing too thin for trace heating, in your experience?

Thank you.
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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

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#1

Re: Trace heating

01/25/2010 8:17 AM
  • Is the tubing being electrically trace-heated, in which case, what's in the tube?
  • Is the substance in the tube doing the trace heating, in which case,
    • what's in the tube?
    • what's its temperature?
    • what is it in contact with?
    • what's in what it is in contact with (freezing point, boiling point, that sort of thing)?
    • What is the size of the thing it is in contact with?
  • What are the ambient temperatures?
  • What are the insulation properties and thicknesses?
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GeoffreyBernardo
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Join Date: Oct 2008
Posts: 8
Good Answers: 1
#2
In reply to #1

Re: Trace heating

01/25/2010 8:43 AM

Is the tubing being electrically trace-heated, in which case, what's in the tube?

Yes, electrically trace heated. It is not currently trace heated. We were planning to, but someone suggested that 1/4" is too small for that. Anhydrous hydrogen fluoride, in one tube, and ammonia in another.

What are the ambient temperatures?

The ambient temperature would be between 20 °c and 30 °C.

What are the insulation properties and thicknesses?

I have not thought of that yet.
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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
Posts: 32175
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#3
In reply to #2

Re: Trace heating

01/25/2010 9:52 AM

Try self-limiting trace heating tape.

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