Posted by George Marsh on March 26, 2014 at 14:43:30 from (50.127.10.235):
In Reply to: Re: NATURAL GAS BUS posted by massey333 on March 26, 2014 at 13:24:51:
massey333, I was once a heating and air mechanic. Freon in a bottle, like propane, is under pressure, the liquid is at the bottom of tank, gas is above the liquid in the tank. When any liquid turns to a gas, heat energy is required. It's called heat of vaporization. R22A is made using propane and is a substitute refrigerant for 22. Yes, I've seen a freon tank and LP tank freeze up when you are changing a liquid to a gas. The regulator on top of your lp tank is using the gas from the top of the LP tank.
The vaporizer usually has hot water from the engine to convert propane from a liquid state to a gas state. So we may be just looking at the same thing differently. There is no liquid propane inside the cylinder.
I have seen carbs freeze up when gasoline change from a liquid to a gas.
I had an engine lock up on me, lost spark, injectors kept dumping raw gas in engine. Usually you don't burn a liquid, except for a diesel and you use injectors.
All the LP tractors/trucks I've seen the liquid must be changed to a gas before it can burn.
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