| Author |
Message |
Henryk (Henryk)
Intermediate Member
Username: Henryk
Post Number: 1120
Registered: 8-2001
| | Posted on Monday, August 25, 2003 - 10:49 am: | |
Interesting Lawrence. That explains it.....thanks. |
Lawrence Coppari (Lawrence)
Member
Username: Lawrence
Post Number: 750
Registered: 4-2002
| | Posted on Monday, August 25, 2003 - 10:30 am: | |
At 1 degree C, the density of water is about 62.4 lbs/ft**3. At 99 C, the density is about 59.8 lbs/ft**3. That's over 4% expansion. Due to pressurization of your system, water can exist as a liquid at higher temperatures so it'll expand even more.
Ethylene glycol is even more dependent on temperature. At 1 C, density is about 70.4 lb/ft**3. At 99 C, density is 66.2 lb/ft**3. That's about a 6% change in density.
The amount of space it would occupy is the reciprocal of the density. |
Henryk (Henryk)
Intermediate Member
Username: Henryk
Post Number: 1119
Registered: 8-2001
| | Posted on Monday, August 25, 2003 - 9:41 am: | |
While correcting my Boxer's cooling system problem, I noticed that when the pressure got too high, coolant would run from the overflow hose on the expansion tank.
I have heard of terms like "expansion" within the system, BUT does the water ACTUALLY expand? I don't think so.
So what is that makes the water itself grow in volume and overflow? Does this suggest air pockets in the system? If there aren't any air pockets, then the system pressure should build, and AIR (not water) should expand and then escape, but NOT the coolant!
Any thoughts? |
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