View Full Version : Science lesson: Is there a compressible liquid?
sanjuro
01-22-2007, 02:47 PM
I was reading James Huang's (The Angry Asian) review of a new fork technology, and he wrote how dampers work "by forcing a non-compressible viscous fluid through small ports".
Is there any liquids that are compressible?
Westy
01-22-2007, 02:49 PM
I reckon the defined difference between a liquid and a gas is liquid is a non compressible fluid while a gas is a compressible fluid.
LordOpie
01-22-2007, 02:49 PM
are all liquids compressible to some extent?
LordOpie
01-22-2007, 02:50 PM
I reckon the defined difference between a liquid and a gas is liquid is a non compressible fluid while a gas is a compressible fluid.
Isn't liquid a compressed gas? Typically compressed by temperature?
Westy
01-22-2007, 02:53 PM
Isn't liquid a compressed gas? Typically compressed by temperature?
You can not compress a gas by temperature. Every fluid has a melting/freezing point that depends the temperature. Easiest example is the boiling point of water changes with elevation(atmospheric pressure). A pressure cooker raises the boiling point by increasing the pressure.
LordOpie
01-22-2007, 02:54 PM
Isn't frozen a form of compression?
Kihaji
01-22-2007, 02:55 PM
Liquids aren't very compressable, as the molecules of them are already packed together pretty tight. Some liquids might exhibit some sense of compressibility because of "looser" molecules though.
Reactor
01-22-2007, 08:28 PM
are all liquids compressible to some extent?
Yes. to an extent.
Part of the function of a pressurizer on an pressurized non-boiling water power plant to provide a surge area for changes in plant volume due to changes in temperature and pressure. For the other functions read the TMI accident analysis report subtitled "So you want to melt your powerplant today "
splat
01-23-2007, 09:16 PM
Isn't frozen a form of compression?
no frozen form is better know as the Solid phase.
GumbaFish
01-24-2007, 08:27 AM
PV=nRT where P is pressure, V is volume, n is the amount of gas in moles, R is the gas constant, and T is temperature.
LordOpie
01-24-2007, 09:50 AM
so...
T = PV/nRT
as Pressure increase, temps rise. hmmm
Westy
01-24-2007, 10:00 AM
so...
T = PV/nRT
as Pressure increase, temps rise. hmmm
Assuming no heat is transfered.
LordOpie
01-24-2007, 10:01 AM
yes, cererus paribus
Da Peach
01-24-2007, 10:23 AM
T on both sides?
LordOpie
01-24-2007, 10:27 AM
T on both sides?
typo, get over it.
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