Pro/Forums - View Single Post - Any Hint on when the Black Ice X-Flow (Single Pass) rads are coming out?

Cathar · 07-07-2005, 07:42 PM

Always remember, single-pass isn't always best, especially for water-cooling loop scenarios.

Works okay/well for single-core (one row of tubes), but for dual-core (two rows of tubes) it may turn out worse as per-tube velocity drops too low.

As with all things, there is a time and place for them dependent upon the application. If single-pass were always better for dual-row cores, then all dual-core heater-cores would all be made single-pass by the car manufacturers, but they're not.

Car radiators are single pass because they have flow rates high enough to keep per-tube velocity up high enough to make it worthwhile, which is why they typically have 1" ID ports on them.

The PA160 was single-pass because it is a single-core radiator.

07-07-2005, 07:42 PM	#2
Cathar Thermophile Join Date: Sep 2002 Location: Melbourne, Australia Posts: 2,538	Always remember, single-pass isn't always best, especially for water-cooling loop scenarios. Works okay/well for single-core (one row of tubes), but for dual-core (two rows of tubes) it may turn out worse as per-tube velocity drops too low. As with all things, there is a time and place for them dependent upon the application. If single-pass were always better for dual-row cores, then all dual-core heater-cores would all be made single-pass by the car manufacturers, but they're not. Car radiators are single pass because they have flow rates high enough to keep per-tube velocity up high enough to make it worthwhile, which is why they typically have 1" ID ports on them. The PA160 was single-pass because it is a single-core radiator.