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forced air cooling in a vttc?

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LAN_403

803

Sat May 01 2010, 05:30PM

Registered Member #2807 Joined: Fri Apr 16 2010, 08:10PM
Location:
Posts: 191

Hi i was wondering, if you blow air on one side of a large tube ( 9 in long, 3 in wide) will that create heat stress and crack the tube because of the heat difference on the sides of the tube?
( i am using a hair dryer fan.

Mads Barnkob

Sat May 01 2010, 07:31PM

Registered Member #1403 Joined: Tue Mar 18 2008, 06:05PM
Location: Denmark, Odense C
Posts: 1968

I have had no problems with my 811A VTTC being forced air cooled from the side, you can see the construction here:

HV Enthusiast

Sat May 01 2010, 08:54PM

Registered Member #15 Joined: Thu Feb 02 2006, 01:11PM
Location:
Posts: 3068

Actually, the air will stay close to the tube all the way around the tube thanks to Bernoulli's principles.

I've worked on high power transmitters with many 833's tubes and they were all fan cooled.

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