Posted by FBH44 on January 29, 2016 at 05:32:29 from (64.85.217.169):
In Reply to: HEAT OF VAPORIZATION posted by Geo-TH,In on January 28, 2016 at 14:33:39:
I think Bernoulli's Principle applies. It strictly applies to incompressible flow and gets complicated when appled to compressible flow [air flowing thru a carb.] Basically, the rapidly accelerating air, containing some constant amount of energy, zips thru the venturi, where it suddenly increases its velocity and drops its static pressure. That sudden drop in static pressure pulls gasoline out of the bowl, thru the jet, and into the accelerating air stream. There is a simultaneous drop in temperature, which depends, but it can be so cold outside and enough moisture outside, it condenses moisture into liquid water on the outside of the carb. If suffiencltly cold it can directly form ice. The vaporization of the liquid gasoline into gas gasoline will also drop temperature in the air stream. I think the mosture can also form inside the carb, downsteam of the venturi. It would be ineresting to know exactly what happens inside the carb at every point, under all conditions. Betcha those old carb engineers did a lot of research.
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