View Full Version : Temperatures too low
LoudHoward
06-12-2004, 11:59 AM
Well I replaced my 0.61" ID cap tube for about a metre of 0.28" ID cap tube.
Temps went lower, MUCH lower, in fact too low.
If I let my condensing unit run for a long time I hear strange gurgling sounds coming from my compressor.
I also have terrible contact between my evaporator block and CPU, what thermal paste whould I use?
comment
06-12-2004, 12:02 PM
Originally posted by LoudHoward
Well I replaced my 0.61" ID cap tube for about a metre of 0.28" ID cap tube.
Temps went lower, MUCH lower, in fact too low.
If I let my condensing unit run for a long time I hear strange gurgling sounds coming from my compressor.
I also have terrible contact between my evaporator block and CPU, what thermal paste whould I use? Arctic Silver Céramique (http://www.arcticsilver.com/ceramique.htm).
Elisha
06-12-2004, 12:05 PM
why ASC over AS5?
LoudHoward
06-12-2004, 12:09 PM
Enough about the thermal paste, I will give ceramique a shot.
How can I stop this from happening? Is a gurgling compressor something to tear my hair out over, I am not turning it on again until this problem gets resolved.
comment
06-12-2004, 12:13 PM
Originally posted by Elisha
why ASC over AS5?
Arctic Silver Céramique Specs:
Thermal Resistance:
<0.007°C-in2/Watt (0.001 inch layer)
Thermal Conductance:
>200,000W/m2.°C (0.001 inch layer)
Average Particle Size:
<0.38 microns <0.000015 inch
( 67 particles lined up in a row equal 1/1000th of an inch. )
Temperature limits:
Peak: –150°C to >180°C Long-Term: –150°C to 125°C
Arctic Silver 5 Specs:
Thermal Conductance:
>350,000W/m2 °C (0.001 inch layer)
Thermal Resistance:
<0.0045°C-in2/Watt (0.001 inch layer)
Average Particle Size:
<0.49 microns <0.000020 inch
Extended Temperature Limits:
Peak: –50°C to >180°C Long-Term: –50°C to 130°C
Thats why :)
comment
06-12-2004, 12:15 PM
Originally posted by LoudHoward
Enough about the thermal paste, I will give ceramique a shot.
How can I stop this from happening? Is a gurgling compressor something to tear my hair out over, I am not turning it on again until this problem gets resolved. Does the evap temp rise after this gurgling?
LoudHoward
06-12-2004, 12:18 PM
Does the evap temp rise after this gurgling?
Nope, carries on falling bit by bit.
comment
06-12-2004, 12:23 PM
Originally posted by LoudHoward
Nope, carries on falling bit by bit. So how low are you going?
Pandrone
06-12-2004, 12:26 PM
what is "too low" ?
LoudHoward
06-12-2004, 12:27 PM
about -40 before I hear serious gurgling, then I turn it off.
Too much gas in the system perhaps?
LoudHoward
06-12-2004, 12:28 PM
what is "too low" ?
Doesn't R404A turn into liquid when it reaches -46?
Doesn't a compressor not like liquid entering the return line?
Pandrone
06-12-2004, 12:30 PM
Originally posted by LoudHoward
Doesn't R404A turn into liquid when it reaches -46?
Doesn't a compressor not like liquid entering the return line?
Entering suctionline, no problems. Entering compressor= might be a problem/ problems.
R404a turning into liquid when reach -45 :S ?
It's already a liquid after the condenser..
LoudHoward
06-12-2004, 12:32 PM
It's already a liquid after the condenser..
Then it evaporates into a gas in the evaporator. and then it goes back to the compressor and I doon't think that my compressor wants liquid coming in that end.
please tell me I'm wrong adn I can just keep on running it.
Redwolf
06-12-2004, 12:49 PM
Sounds like liquid 404A boiling off when it hits the hot compressor oil. Right now you need to get a good thermal paste and make sure you block is mounted well.
Then worry about adjusting the charge.
LoudHoward
06-12-2004, 12:58 PM
Then worry about adjusting the charge.
Will lowering the amount of gas in the system help any?
Gary Lloyd
06-12-2004, 01:32 PM
Is the suction line frosted? Is the compressor cold?
LoudHoward
06-12-2004, 01:49 PM
Is the suction line frosted? Is the compressor cold?
The side of the compressor where the gas returns to is cold, apart from that side, the compressor is pretty warm.
yeah, the suction line (line back from the evaporator right?) is frosted up big time.
I even spotted a tiny amount of frost on my compressor at one point
chilly1
06-12-2004, 02:24 PM
What is the suction pressure and line temperature at the compressor?
Elisha
06-12-2004, 02:38 PM
Originally posted by comment
Arctic Silver Céramique Specs:
Thermal Resistance:
<0.007°C-in2/Watt (0.001 inch layer)
Thermal Conductance:
>200,000W/m2.°C (0.001 inch layer)
Average Particle Size:
<0.38 microns <0.000015 inch
( 67 particles lined up in a row equal 1/1000th of an inch. )
Temperature limits:
Peak: –150°C to >180°C Long-Term: –150°C to 125°C
Arctic Silver 5 Specs:
Thermal Conductance:
>350,000W/m2 °C (0.001 inch layer)
Thermal Resistance:
<0.0045°C-in2/Watt (0.001 inch layer)
Average Particle Size:
<0.49 microns <0.000020 inch
Extended Temperature Limits:
Peak: –50°C to >180°C Long-Term: –50°C to 130°C
Thats why :)
ah....but does it matter for air cooling? or is one better than the other?
comment
06-12-2004, 02:49 PM
Originally posted by Elisha
ah....but does it matter for air cooling? or is one better than the other? For air cooling you would choose AS5 or OCZ Ultra 5+.
m0nk33y
06-12-2004, 04:46 PM
check superheat and adjust
LoudHoward
06-13-2004, 01:48 AM
What is the suction pressure and line temperature at the compressor?
I don't know how to heck the suction line pressure. I therefore assume that it is ~9.7BAR. The engineer guy told me that.
The temp at the compressor is roughly -30. And it has just started again.
Too much gas in the loop?
LoudHoward
06-13-2004, 03:21 AM
WOOHOO! I removed some gas from the loop and as a result my compressor runs a lot hotter. Now the copper pipe leading into the compressor doen't ice up.
No more gurgling either.
Evap temps have gone up by about 4 degrees though.
How much gas is too little? Wht are the warning signs?