Load test put bubbles in res?

[spwath]

I did a test, with my loop, passivly, got up to 50 degrees before i turned on fans, but now a bunch of bubbles apeared in my res. Is this normal?
This would be the first time my loop got above 40 degrees, and it got to 50 degrees.

(thats the CPU temp BTW)

[Firearm2112]

you have the res before the pump in your loop right?

[spwath]

you have the res before the pump in your loop right?

Yes, of corse.

ITs a pump res combo BTW, XSPC photon 170 with d5 pump

[GzeroD]

My guess is you have a PWM pump? If so the temp getting higher might of caused the pump to run at a higher speed and knock loose some air.

[spwath]

My guess is you have a PWM pump? If so the temp getting higher might of caused the pump to run at a higher speed and knock loose some air.

Nope, d5 pump, always kept same speed, it has a knob at bottom to change spee, which i didnt

[airdeano]

bubble in the res means:

air still trapped in loop

pump speed is too fast (cavitation)

 

has nothing to do with heating of the coolant (unless the coolant is weak or contaminated).

[spwath]

bubble in the res means:

air still trapped in loop

pump speed is too fast (cavitation)

 

has nothing to do with heating of the coolant (unless the coolant is weak or contaminated).

Well the bubbles did not appear untill the coolent was heated.

No bubbles for the past 2 weeks, i load test, and it bubbles

[Enderman]

is this a new loop?

probably just bubbles bleeding out slowly

[BurgerBum]

wait, you have a loop capable of going fan-less and staying under 60*C???? *jelly*

[airdeano]

bubbles are trapped air. and the system is sealed, so there still is air in the loop

(not easily found).

[spwath]

is this a new loop?

probably just bubbles bleeding out slowly

Not really, around 1 month old, didnt buble since first week, and now, once i load tested it

wait, you have a loop capable of going fan-less and staying under 60*C???? *jelly*

No, well maby.

I stopped at 50 degrees, as i want to make sure nothing is weird.

Ill do a reall test later today, see what it is after 30 min of prime 95.

I can tell you, load with fans, cpu stays under 40 degrees

bubbles are trapped air. and the system is sealed, so there still is air in the loop

(not easily found).

But why is it that they came out once i put it under load?

That doesnt make sence

[airdeano]

as coolant is heated, it expands (displacing air). the air then is pushed out into

the tubing. collects into the res (like it is supposed to). you still have air in the system.

[spwath]

as coolant is heated, it expands (displacing air). the air then is pushed out into

the tubing. collects into the res (like it is supposed to). you still have air in the system.

Ok, that makes sence, thanks

[airdeano]

usually, i'll ramp the temperatures up to do a couple of things:

 

cure the TIM paste, purge air from the system, test the failure of fan system.

[spwath]

usually, i'll ramp the temperatures up to do a couple of things:

 

cure the TIM paste, purge air from the system, test the failure of fan system.

right, i never really got it up above 40 degrees before.

 

I say my temps are pretty good, but now, they may be even better.

[airdeano]

yeppers.. purging all the air out will increase the thermal capacity of the loop.

air-to-air heat exchangers are densely packed with a lot of fins, water-to-air

doesn't have to have as much fin density as the air counterparts. ideally,

you'd want a hydraulic action within the loop. 200ml coolant pulled from the

reservoir and 200ml put back into the reservoir. so when you see the reservoir

pull down from the pump pulling coolant in and nothing pushing back into the

reservoir, that is air (compressing) and blocking the coolant from returning properly.