2-pass Rad.

tcc · 08-12-2005, 11:38 AM

Is there anywhere in the forum where someone has explained how a 2-pass rad works (i.e. BIX)? I've tried searching but came up with nothing, unless I used the wrong search words/terms.

Thanx

Brians256 · 08-12-2005, 02:13 PM

2-Pass just means that the coolant passes through the radiator twice. In other words, for a 2-pass radiator, the coolant makes a 180 degree turn and goes back to the same side as the inlet. The flow pattern is like a U.

In a 4-pass radiator, the coolant starts out on one side, goes to the other side, turns back for the second pass, reaches the initial side, turns back to go for the 3rd pass, then reaches the other side to turn back and go for the 4th pass and reach the initial side. The flow pattern is like an M.

In a single pass radiator, the coolant starts out on one side and the outlet is on the opposite side. It is one pass through the "length" of the radiator.

08-12-2005, 11:38 AM	#1
tcc Cooling Neophyte Join Date: Aug 2005 Location: Canada Posts: 8	2-pass Rad. Is there anywhere in the forum where someone has explained how a 2-pass rad works (i.e. BIX)? I've tried searching but came up with nothing, unless I used the wrong search words/terms. Thanx __________________ AMD 2500+ XP (11x220 @ 1.7v) Mushkin 2x256 lvl II PC3500 (11-2-2-2 @ 2.9v) ATI 9600 Pro (502/335) Thermalright SLK-947U w/92mm Panaflow Thermaltake V100A Thermaltake 480W PSU w/PFC Matrix Orbital MX212

08-12-2005, 02:13 PM	#2
Brians256 Pro/Staff Join Date: Oct 2001 Location: Klamath Falls, OR Posts: 1,439	2-Pass just means that the coolant passes through the radiator twice. In other words, for a 2-pass radiator, the coolant makes a 180 degree turn and goes back to the same side as the inlet. The flow pattern is like a U. In a 4-pass radiator, the coolant starts out on one side, goes to the other side, turns back for the second pass, reaches the initial side, turns back to go for the 3rd pass, then reaches the other side to turn back and go for the 4th pass and reach the initial side. The flow pattern is like an M. In a single pass radiator, the coolant starts out on one side and the outlet is on the opposite side. It is one pass through the "length" of the radiator.

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