Yeah. That's exactly what I was thinking. Grin.
From: [email protected] [mailto:[email protected]] On Behalf Of chiliblindman Sent: Friday, January 15, 2010 7:40 AM To: [email protected] Subject: [BlindHandyMan] propane Bob, propane does not frost when exposed to oxygen. It is a simple property of heat transfer. Anytime you have a liquid under pressure and release it to a lower pressure area, the liquid will vaporize and absorb heat causing a very cold spot. The frost is liquid propane frozen and water vapor frozen that was in the air around the pressure drop area. They use this property to make man-made snow at ski resorts. Water is pressurized to somewhere around 56 psi and sprayed with a certain orfice opening. The resulting pressure drop chills the water vapor coming out to below 0 degrees F forming snow. The temperature does need to be below freezing in order to keep it in state. .............bob [Non-text portions of this message have been removed] [Non-text portions of this message have been removed]
