New Cooling Technology

maryh · 05-12-2004, 10:53 AM

Hi,

We have a new idea for pc cooling. It's a new a/c system that doesn't use liquid or gas. It was invented by my brother and has been tested by various companies (Ford/Visteon). He has a brand new prototype for computers. Here's some basic information:

CPU tested: PIV 2.4 GHz, 3.2 GHz and a 3.5 GHz
Overclocked:150% - 180% w/ stable system results
CPU temp: 75-85 degrees F at 150%
Internal case Temp: 40- 45 degrees F
Noise: 42 dBa

FFACS
Chart

I've posted this on 3 message boards hoping to learn who's who for PC Cooling reviews. Look at the system and tell me what you think.

Thanks

MadHacker · 05-12-2004, 12:27 PM

Quote:

Originally Posted by maryh

Hi,

We have a new idea for pc cooling. It's a new a/c system that doesn't use liquid or gas. It was invented by my brother and has been tested by various companies (Ford/Visteon). He has a brand new prototype for computers. Here's some basic information:

CPU tested: PIV 2.4 GHz, 3.2 GHz and a 3.5 GHz
Overclocked:150% - 180% w/ stable system results
CPU temp: 75-85 degrees F at 150%
Internal case Temp: 40- 45 degrees F
Noise: 42 dBa

FFACS
Chart

I've posted this on 3 message boards hoping to learn who's who for PC Cooling reviews. Look at the system and tell me what you think.

Thanks

I think you need a lot more pictures and graphs to better explain exactly what is going on.
temperatures are OK but not exceptable for the noise level, 42dBa is pretty high,
although i only get 25% overclock my system doesn't go above 91F with sound level around 27dBa

pHaestus · 05-12-2004, 12:50 PM

noise ratings are even more subjective than temperatures.

bigben2k · 05-12-2004, 04:11 PM

Would be nice to know more about the technology.

Looks interesting though. What chemicals are used, if not Freon?

Is this available commercially? I'd review it, but I'm not quite ready yet. My colleague Martin might be able to.

TerraMex · 05-12-2004, 04:18 PM

Read closer.
It's a pressurized air injection system. Not more.
Nor that "complex and star trek stuff".
Similar systems are used with vapor for fuel atomization (for mixture and density).

wijdeveld · 05-24-2004, 06:09 AM

If I guess correctly it’s is based on the cooling effect of expanding gas (reversed of the compressor heat development).
I’ve done some back of the envelope calculations and the reason the water has to be removed from the air is exactly why this setup will only work with low loads. Water would adsorb too much of the ‘cold’ and therefore limit the temperature drop. But what we’ve left after drying is a gas with a very low heat adsorption capacity and so a very rapid heating when a load is applied. Also, the heat transport over the gas/solid interface will be problematic since the exchange will be severely limited by the not-optimal heat adsorption capacity of dry air.

But I might be wrong and I'm happy to help with some more detailed calculations if more info on the system is posted (like total air flow (in mol/sec or another mass & time related unit), pressure drop of the expanding air, temperature in pressure chamber and preferably CPU die temperatures under different loads). I'm sure some users in here can help in adapting an phase-change evaporator for optimum heat exchange for such a setup.

05-12-2004, 10:53 AM	#1
maryh Cooling Neophyte Join Date: May 2004 Location: usa Posts: 1	New Cooling Technology Hi, We have a new idea for pc cooling. It's a new a/c system that doesn't use liquid or gas. It was invented by my brother and has been tested by various companies (Ford/Visteon). He has a brand new prototype for computers. Here's some basic information: CPU tested: PIV 2.4 GHz, 3.2 GHz and a 3.5 GHz Overclocked:150% - 180% w/ stable system results CPU temp: 75-85 degrees F at 150% Internal case Temp: 40- 45 degrees F Noise: 42 dBa FFACS Chart I've posted this on 3 message boards hoping to learn who's who for PC Cooling reviews. Look at the system and tell me what you think. Thanks

05-12-2004, 12:50 PM	#3
pHaestus Big Player Making Big Money Join Date: Aug 2001 Location: irc.lostgeek.com #procooling.com Posts: 4,782	noise ratings are even more subjective than temperatures. __________________ Getting paid like a biker with the best crank... -MF DOOM

05-12-2004, 04:11 PM	#4
bigben2k Responsible for 2% of all the posts here. Join Date: May 2002 Location: Texas, U.S.A. Posts: 8,302	Would be nice to know more about the technology. Looks interesting though. What chemicals are used, if not Freon? Is this available commercially? I'd review it, but I'm not quite ready yet. My colleague Martin might be able to. __________________ WBTA (Water Block Testing Alliance) Nordic Hardware WC 101

05-12-2004, 04:18 PM	#5
TerraMex Cooling Savant Join Date: Nov 2002 Location: Portugal, Europe Posts: 870	Read closer. It's a pressurized air injection system. Not more. Nor that "complex and star trek stuff". Similar systems are used with vapor for fuel atomization (for mixture and density). __________________ "we need more cowbell."

05-24-2004, 06:09 AM	#6
wijdeveld Cooling Neophyte Join Date: May 2004 Location: Netherlands Posts: 29	If I guess correctly it’s is based on the cooling effect of expanding gas (reversed of the compressor heat development). I’ve done some back of the envelope calculations and the reason the water has to be removed from the air is exactly why this setup will only work with low loads. Water would adsorb too much of the ‘cold’ and therefore limit the temperature drop. But what we’ve left after drying is a gas with a very low heat adsorption capacity and so a very rapid heating when a load is applied. Also, the heat transport over the gas/solid interface will be problematic since the exchange will be severely limited by the not-optimal heat adsorption capacity of dry air. But I might be wrong and I'm happy to help with some more detailed calculations if more info on the system is posted (like total air flow (in mol/sec or another mass & time related unit), pressure drop of the expanding air, temperature in pressure chamber and preferably CPU die temperatures under different loads). I'm sure some users in here can help in adapting an phase-change evaporator for optimum heat exchange for such a setup.

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