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| This is a discussion on Rain or high humidty effects on mpg within the Gen II Prius Fuel Economy forums, part of the Gen II (2004-2009) Toyota Prius Forums category; With fog (liquid water) the actual density of the fluid you are pushing thru increases, so drag increases.Same story with ... |
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Rain or high humidty effects on mpg
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06-04-2009, 10:13 AM
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Friends: 0 |  Re: Rain or high humidty effects on mpg With fog (liquid water) the actual density of the fluid you are pushing thru increases, so drag increases.Same story with actual rain-you have to push air aside, and actual liquid water(tires and car body have to displace liquid water, so on the ground, some just hanging/floating in the air while it slowly falls or evaporates). I don't know how much weight/mass of water drops is in a cubic foot of fog, but air is pretty light- 29 grams in 22.4 liters-I think 30 liters is about a cubic foot. Charlie |
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