[QuadList] Toluene

[Dennis Degan]

		I previously said:

> I think you must be kidding (based on your other droll statements!).  
> Though Freon (a registered trademark, I think DuPont owns it) is an 
> excellent refrigerant, the gas itself is not simply 'cold', so tires 
> could not be kept from over-heating by being inflated with it.  The 
> act of inflating a tire actually INCREASES the temperature of the gas 
> inside (it is this property that partially explains how refrigeration 
> systems work). 

		On Jan 16, 2010, at 3:19 PM, Joe Owens wrote:

 > So the refrigerant is not used in its normal manner (as an adiabatic 
heat cycle), but as an inert, dry, heat conductor.

		I say:

	I see.  Explained in this manner, I get it.  The refrigerant acts as a 
more efficient conductor of the heat generated by the flexing of the 
tire as it runs on the track.  I mistook your meaning when you 
previously said "It is extremely stable, and also helped to keep the 
treads from over-heating."

			Dennis Degan, Video Editor-Consultant-Knowledge Bank
	  					NBC Today Show, New York