please, is my english that confusing??? if you will, think of the cooling system pressure drop graphically. the pressure is on the Y-axis, distance from the pump outlet on the X, radiator & waterblock indicated:
Code:
^
| ______________
| \_____
| \______________
|----------------------------------------------------------->
|pump outlet rad W/B pump inlet
now does my post make sense? the small gradual drop due to tubing is not shown. the magnitude of the outlet pressure & the pressure drops due to the res & blocks increase with velocity (speed of water). the pressure may equal to ambient pressure anywhere along the water path. gravity & air-expansion create overall pressure, which shifts the graph up (BTW, gravity vs distance along the water path is somewhat random in most cases).
erm, we all forgot the most important tfactor
the lengthwise expansion of our tubing!!! after i turned on my airconditioner today, the water level actually rose. the joke's on us;P