Cross flow vs u flow radiator

[MATRIX 1]

Does anyone know about the difference between the xflow and uflow radiators. seems to me x flow is one pass and u flow is two?

[The Sloth]

xfow single pass u flow duel pass

[MATRIX 1]

7 minutes ago, nerdslayer1 said:

xfow single pass u flow duel pass

ok thanks. Looks like they both perform well ...... duel pass should remove more heat though

[W-L]

7 minutes ago, MATRIX 1 said:

ok thanks. Looks like they both perform well ...... duel pass should remove more heat though

U flow and X flow have basically no difference in performance or very marginal, this is U flow it enters and exits through the same end, where X flow enters at one end and exits the other side.

[MATRIX 1]

4 minutes ago, W-L said:

U flow and X flow have basically no difference in performance or very marginal, this is U flow it enters and exits through the same end, where X flow enters at one end and exits the other side.

ok now you have me thinking.   On x flow all the tubes one pass = xvolume per unit of time and the u flow has approx. 1/2xvolume per same unit of time.......so if both are pumping 1 GPM flow rate the velocity increases in the u flow compared to the xflow...... Are the pumps in these systems positive displacement?

[W-L]

2 minutes ago, MATRIX 1 said:

ok now you have me thinking.   On x flow all the tubes one pass = xvolume per unit of time and the u flow has approx. 1/2xvolume per same unit of time.......so if both are pumping 1 GPM flow rate the velocity increases in the u flow compared to the xflow...... Are the pumps in these systems positive displacement?

Well similar to when you have a restriction in a pipe or smaller sectional area the fluid will be forced to move faster to keep up and have the same volume in the end. However that is in an ideal situation meaning there is no pressure drop or frictional loss from the rad itself but the rads themselves are low restriction points in the loop compared to blocks. The pumps like the D5 and DDC are regular centrifugal type pumps. 

[MATRIX 1]

2 minutes ago, W-L said:

Well similar to when you have a restriction in a pipe or smaller sectional area the fluid will be forced to move faster to keep up and have the same volume in the end. However that is in an ideal situation meaning there is no pressure drop or frictional loss from the rad itself but the rads themselves are low restriction points in the loop compared to blocks. The pumps like the D5 and DDC are regular centrifugal type pumps. 

like the thumb on the hose trick.....possibly that's why they cool the same. x flow has 1 pass and slower and the u is faster with two passes  I take that you recommend D5 and DDC pumps?

[W-L]

1 minute ago, MATRIX 1 said:

like the thumb on the hose trick.....possibly that's why they cool the same. x flow has 1 pass and slower and the u is faster with two passes  I take that you recommend D5 and DDC pumps?

Similar yes, in that area when you restrict it the fluid will move faster and higher pressure, but in this case as the tubing is the actual limiting factor since it's smaller than the rad it wouldn't be the point of restriction. 

 

Both the D5 and DDC units are well regarded, I usually suggest the D5 unit as they tend to run quieter and not as hot as the DDC units as the D5's are actively cooled by the fluid. 

[MATRIX 1]

2 minutes ago, W-L said:

Similar yes, in that area when you restrict it the fluid will move faster and higher pressure, but in this case as the tubing is the actual limiting factor since it's smaller than the rad it wouldn't be the point of restriction. 

 

Both the D5 and DDC units are well regarded, I usually suggest the D5 unit as they tend to run quieter and not as hot as the DDC units as the D5's are actively cooled by the fluid. 

Quit is important......I am having trouble picking a few things, maybe your thoughts. Titan XP water cooled vs 1080 FTW hydrocopper. 2) bitspower ridged parts or ? 3) Which 30mm thick radiator. I have been told Black ice GTS

[W-L]

9 minutes ago, MATRIX 1 said:

Quit is important......I am having trouble picking a few things, maybe your thoughts. Titan XP water cooled vs 1080 FTW hydrocopper. 2) bitspower ridged parts or ? 3) Which 30mm thick radiator. I have been told Black ice GTS

Well in terms of performance the titan X pascal would be the best but of course be more costly not to mention still need a GPU block then. For bitspower what do you mean by rigid like non-rotary fittings? 

 

For a 30mm radiator the Back ice GTS would have the higher performance potential due to the higher fin density and being a double stacked fin array, that however will require higher RPM fans to be able to force the air through the dense fin array. For silence you would be better with a lower FPI fin array like something from Alphacool's ST30 series but on the performance end will be less due to the lower surface area.

[MATRIX 1]

3 minutes ago, W-L said:

Well in terms of performance the titan X pascal would be the best but of course be more costly not to mention still need a GPU block then. For bitspower what do you mean by rigid like non-rotary fittings? 

 

For a 30mm radiator the Back ice GTS would have the higher performance potential due to the higher fin density and being a double stacked fin array, that however will require higher RPM fans to be able to force the air through the dense fin array. For silence you would be better with a lower FPI fin array like something from Alphacool's ST30 series but on the performance end will be less due to the lower surface area.

Yes the GTS confuses me. they say its 16FPI and optimized for sub 800rpm but the double row...... better static fans? I have been looking for a test on the noise factor ( as the air rushes through the fins.  Sorry I meant Rigid piping PETG

[W-L]

1 minute ago, MATRIX 1 said:

Yes the GTS confuses me. they say its 16FPI and optimized for sub 800rpm but the double row...... better static fans? I have been looking for a test on the noise factor ( as the air rushes through the fins.  Sorry I meant Rigid piping PETG

Having it so thin does help as in many cases a lot of restriction does come from extra thickness but if your fans are well pressure optimized it should give very good performance. 

 

For rigid fittings and piping, PETG is one of the most popular as long as you have the tubing and fittings with the same OD you should be good. IIRC Bitspowers has two main sizes, 12mm and 16mm there is little difference just what looks the best in your build. 

[MATRIX 1]

2 minutes ago, W-L said:

Having it so thin does help as in many cases a lot of restriction does come from extra thickness but if your fans are well pressure optimized it should give very good performance. 

 

For rigid fittings and piping, PETG is one of the most popular as long as you have the tubing and fittings with the same OD you should be good. IIRC Bitspowers has two main sizes, 12mm and 16mm there is little difference just what looks the best in your build. 

I will check out IIRC. I have decided to run parallel piping and I want to use 16mm main pipes that branch to 12mm piping ( to CPU and GPU ) Has this been done before?

[W-L]

4 minutes ago, MATRIX 1 said:

I will check out IIRC. I have decided to run parallel piping and I want to use 16mm main pipes that branch to 12mm piping ( to CPU and GPU ) Has this been done before?

You can have different sized pipes if your want to go for a certain look, just be sure to order the correct sizes for what is needed. 

 

 

Just to mention IIRC is just an expression for (if I recall correctly).

[MATRIX 1]

3 minutes ago, W-L said:

You can have different sized pipes if your want to go for a certain look, just be sure to order the correct sizes for what is needed. 

 

 

Just to mention IIRC is just an expression for (if I recall correctly).

LOL ok thanks for the help