SailNet Community - View Single Post - Propane leak
Thread: Propane leak
View Single Post
  #33  
Old 10-12-2007
sailingdog's Avatar
sailingdog sailingdog is offline
Telstar 28
 
Join Date: Mar 2006
Location: New England
Posts: 43,291
Thanks: 0
Thanked 9 Times in 9 Posts
Rep Power: 13
sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice
Might want to check your basic chemistry again. All gases expand and contract to some degree with changes in temperature including Nitrogen. Nitrogen is generally used since it won't generally contaminate the system or cause corrosion or other problems.

The ideal gas law basically states:

PV=nRT

where P is pressure, V is volume, n is the number of moles, T is the temperature in degrees Kelvin, and r is the universal gas constant. If the temperature changes, the volume will either increase or the pressure will.

Quote:
Originally Posted by vabuckeye View Post
Nitrogen is a Group 15 element. The element seemed so inert that Lavoisier named it azote, meaning "without life". Nitrogen gas is colourless, odourless, and generally inert. As a liquid it is also colourless and odourless. Prof. James Marshall U of North Texas

Nitrogen is the recommended gas for leak testing, purging, and brazing In the HVAC & R industry.

Air, freon, water, propane, oil, and so on and so on will react to changes in temp. My point is that nitrogen will not and makes a better gas to check for leaks.
__________________
Sailingdog

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

If you're new to the Sailnet Forums... please read this
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
.

Still—DON'T READ THAT POST AGAIN.
Reply With Quote Share with Facebook