Draven wrote:Just chiming in.. no water does not need to boil to evaporate. It is evaporating all the time just at room temperature. Just not at a noticable rate.
Water has 3 states, ice, water and steam. So if it has not boiled it is still water
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Draven wrote:Just chiming in.. no water does not need to boil to evaporate. It is evaporating all the time just at room temperature. Just not at a noticable rate.
dazzz wrote:I'm no expert but
bobhatton wrote:Draven wrote:Just chiming in.. no water does not need to boil to evaporate. It is evaporating all the time just at room temperature. Just not at a noticable rate.
Water has 3 states, ice, water and steam. So if it has not boiled it is still water
T.F.S. wrote:Turbos sometimes get a little bit hot, they also pull quite a vacuum which allows the water to boil at a much lower temperature and then we have explosive evaporation at the tips of the blades..
The simple evidence for this is that pre compressor water injection has proved many times to result in moving the true operating point to the left on the compressor map.
For more info please read here.
http://www.aquamist.co.uk/vbulletin/sho ... .php?t=251
Draven wrote:water does not need to boil to evaporate.
dazzz wrote:I'm no expert but
dazzz wrote:I'm no expert but
dazzz wrote:I'm no expert but
bobhatton wrote:Draven wrote:Just chiming in.. no water does not need to boil to evaporate. It is evaporating all the time just at room temperature. Just not at a noticable rate.
Water has 3 states, ice, water and steam. So if it has not boiled it is still water
dazzz wrote:I'm no expert but
dazzz wrote:I'm no expert but
ashley wrote:So which part have I misunderstood? Is water going through a phase change in the inlet tract? Genuine question
T.F.S. wrote:Just adding this graph that a lot of you might find interesting.
Image Replaced With URL For Quote http://www.pballandmore.com/images/wate ... essure.jpg
It goes some way to show why it is that my engine is in one piece where other MR2 engines have simply gone pop...like I said in page one, its all about cylinder pressure and detonation.
The water cools the walls of the cylinder preventing the cracking some engines suffer, it cools the piston, it cools the inlet, lowers EGT, reduces cylinder pressure, increases the octane of the fuel, reduces knock.
When used pre turbo it also spools the turbo earlier as it changes the density of the charge, changes the mach speed of the compressor, allows the turbo to flow more/hold on to its power for longer and pushes the turbo towards an isothermic state.
If you also add methanol into the mix it just makes the turbo go mad!
Turbo cars need WI...
dazzz wrote:I'm no expert but
GeorgeL wrote:ashley wrote:So which part have I misunderstood? Is water going through a phase change in the inlet tract? Genuine question
Yes mate it is due to pressure not temperature
ashley wrote:raptor95GTS wrote:WWII aircraft used WI in the inlet of the supercharger, achieved 100degF air intake temperature drops. I'd guess those engineers used the right equipment to measure their data
Not necessarily, technology has moved on "slightly" in the last 60 years or so...