BIGDOMINO
Full Timing since July 13th 2007
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This may be a strange question, but here goes. I am wondering if there is a difference in cooling an engine when the humidity is high? If you were traveling down the rode and it is 90 degrees, would the humidity level make any difference in how well the engine cools?
Thanks.
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Kenneth
Washington, the state
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No.
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Gale Hawkins
Murray, KY
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Not in any real sense would be my take. Cold and heat indexs only apply to living matter is what I have been told.
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henchman
Cardinal, Ontario
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In theory, more humid air should cool better as it's density is higher, that's why we use fluids to cool the engine instead of just air. However, I doubt it makes any real difference in engine temps.
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KOG
Winterville GA
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No difference in practical terms. Evaporative cooling from sweat does vary greatly with humidity. Your radiator doesn't sweat (unless it leaks).
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jauguston
Bellingham, WA
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No
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marvmarcy
Polson, MT, USA
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Well, the answer is a qualified yes. The higher the humidity (more water) the more heat can be absorbed and held. However, since the air and the little bit of water in the air is already at 90*, it won't be of any consequence. It is fairly common knowledge that you can help cool an overheated engine by running a hose over/through the radiator while the engine is running, but much of the extra cooling happens because the water is much cooler than the ambient air temperature. Even so, water is denser than gas, so it will absorb and hold more heat or cold. In practicality, the answer is no.
JMHO
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sum1
So-Cal
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As I remember from flying small planes and helicopters, water vapor is less dense than air. Engine power was considered to be slightly less in humid conditions. Now liquid water is another matter!
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wa8yxm
Wherever I happen to park
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Actually.. Humidity does make a difference. HOWEVER what difference it makes depends
Straight engine. the higher humidity air can hold more heat and thus cool the engine better than dry air
however you are more likely to run the A/C to cool the driver (A good thing actually) and this "pre-heats" engine cooling air (That heat needs to go somewhere) so this results in the engine running with a bit less, overall, cooling (Plus a higher work load)
But generally the more humidity in the air the better it is at absorbing heat from an engine
Since you are cooled by the evaporation of water.. It works the other way around for you.
Nothin adds excitment like something that is none of your business
John is Near Kenwood TS-2000 housed in a 2005 Damon Intruder 377
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