On 16/02/14 07:11, Basil Chupin wrote:

To begin with, unless you are using a refrigerator-type cpu cooler the temperature of your cpu cannot be less than the ambient temperature

This is not true - moving air from a fan carries heat away more effectively than static air, so the processor can be several degrees below the ambient temperature, provided the fan and heatsink are reasonably clean. This is exactly why people use room fans in hot weather and we are given a "wind chill" factor in winter weather reports. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org

On 16/02/14 10:30, jdd wrote:

people have perspiration to cool them, cpu have not, that's why frigs are usefull

jdd

Yes, a surprising number of people resort to frigs when they're feeling hot. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Huh, sorry, unintentional double post. Thunderbird bug, apparently. Sometimes Th does not use the default smtp server (postfix) and sends on its own. It thinks post failed, and sends again. It also thinks that it could not save copy in sent folder, and keeps trying, till aborted. - -- Cheers / Saludos, Carlos E. R. (from 13.1 x86_64 "Bottle" (Minas Tirith)) On 2014-02-16 13:43, Carlos E. R. wrote:

On 2014-02-16 10:26, Dylan wrote:

No, this is absolutely wrong.

-----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iF4EAREIAAYFAlMAt9UACgkQja8UbcUWM1xYQwD5Aen79rXU5sl34zKapBMp7JYS 1OSAWoT23Am//DT3ZG8A/2uOYGevEjX0K/zCKtFaleK3mWGdSlUBt12H6Hl8Zapk =EJ3T -----END PGP SIGNATURE----- -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 On 2014-02-17 07:43, Basil Chupin wrote:

On 17/02/14 00:06, Carlos E. R. wrote:

...

Huh, sorry,

unintentional double post. Thunderbird bug, apparently.

Sometimes Th does not use the default smtp server (postfix) and sends on its own. It thinks post failed, and sends again. It also thinks that it could not save copy in sent folder, and keeps trying, till aborted.

Nah, nah, nah.....don't blame Thunderbird!

I've been using TB since.. oh, since Tutankhamun was a baby, and TB has never done this to me :-) .

You gotta be kidding. It has done that same thing to me twice this week, and other times before. Just check the headers of my emails and compare. - -- Cheers / Saludos, Carlos E. R. (from 13.1 x86_64 "Bottle" (Minas Tirith)) -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iF4EAREIAAYFAlMCDbIACgkQja8UbcUWM1xpIAD+LPYZMl9xJwMcBnRXz2ddPWTW m3nhTAS+1GUd6xDlQ0kBAJzJdFFPXycXdl4yg3xOvz+JkvX9N0WK5YdHCAe0Ra2l =kg1q -----END PGP SIGNATURE----- -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org

...

Sometimes Th does not use the default smtp server (postfix) and sends on its own.

smtp can be reached at local host (but not accepted by all ISP), at the provider smtp or at any other one. it's possible to set the smtp server to use in the th parameters. don't know if there is a fallback, never experienced that. I from time to time have the "can write to sent folder" error. I use my ISP smtp and at some hours it's very loaded and sometime fails don't know if this helps, nor is the headers of the duplicated mail giv es enough info, after passing the mailing list jdd -- http://www.dodin.org -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 On 2014-02-16 10:26, Dylan wrote:

On 16/02/14 07:11, Basil Chupin wrote:

...

To begin with, unless you are using a refrigerator-type cpu cooler the temperature of your cpu cannot be less than the ambient temperature

This is not true - moving air from a fan carries heat away more effectively than static air, so the processor can be several degrees below the ambient temperature, provided the fan and heatsink are reasonably clean. This is exactly why people use room fans in hot weather and we are given a "wind chill" factor in winter weather reports.

No, this is absolutely wrong. Fans work with people because we perspire, we evaporate water to cool ourselves. With moving air, that evaporation is faster and we cool more. As for the wind chill, see the wikipedia definition (just one easy to find definition): «Wind-chill or windchill, (popularly wind chill factor) is the perceived decrease in air temperature felt by the body on exposed skin due to the flow of air.» So, if outside temp is 10C and windchill is -10C, and you mesure the temperatures of any objects outside, they will be at 10, not -10. Water will not freeze. - -- Cheers / Saludos, Carlos E. R. (from 13.1 x86_64 "Bottle" (Minas Tirith)) -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iF4EAREIAAYFAlMAsl0ACgkQja8UbcUWM1zEXgD/bnP7XB1oZLSQExW9eUC3M0bc Sd+6STMtf8XIuMot5IIA/RrWedyiZ0O29GDeNEqFUTS+C8qgIi6H2EEBxl4VhSNK =nxuI -----END PGP SIGNATURE----- -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org

On Sunday, February 16, 2014 08:11:06 AM Greg Freemyer wrote:

Dylan wrote:

...

On 16/02/14 07:11, Basil Chupin wrote:

...

To begin with, unless you are using a refrigerator-type cpu cooler

the

...

temperature of your cpu cannot be less than the ambient temperature

This is not true - moving air from a fan carries heat away more effectively than static air, so the processor can be several degrees below the ambient temperature, provided the fan and heatsink are reasonably clean. This is exactly why people use room fans in hot weather and we are given a "wind chill" factor in winter weather reports.

Wind alone just gets you to ambient faster.

I brew beer as a hobby. If ambient is a few degrees too hot, I put the fermentation bucket in larger be verage cooler bucket and fill that with water. I then setup a fan to blow across the surface of the water.

This guy didn't even use a fan, but he does use a towel to wick up the water and provide a bigger evaporation surface: http://samtierney.files.wordpress.com/2011/03/photo2.jpg

The result is evaporation of the water bath. The evaporation process sucks energy out of the bath and cools it below ambient. That in turn cools the fermentation bucket.

Greg

Thanks everybody for your input. What i like most is going from a high temperature of a cpu via wind chill to brewing beer. :) Got enough input to fine tune my machine. Cleaning of the inards and replacing the thermal compound was done on last saturday. A broken fan was replaced. There are two 8 cm fans (Noisy), one sucking air in and one at the other end of the unit blowing air out. I can live with the actual temp of 60 to 65 C. Will have to dig deeper into the details of my cpu for the max temperature. -- Linux User 183145 using KDE4 and LXDE on a Pentium IV , powered by openSUSE 13.1 (i586) Kernel: 3.13.2-14.gb59b809-default KDE Development Platform: 4.12.2 20:44pm up 9:35, 4 users, load average: 1.13, 1.17, 1.38 -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org

Dylan wrote:

On 16/02/14 07:11, Basil Chupin wrote:

...

To begin with, unless you are using a refrigerator-type cpu cooler the temperature of your cpu cannot be less than the ambient temperature

This is not true - moving air from a fan carries heat away more effectively than static air, so the processor can be several degrees below the ambient temperature, provided the fan and heatsink are reasonably clean. This is exactly why people use room fans in hot weather and we are given a "wind chill" factor in winter weather reports.

Nonsense. Yes, moving air will carry heat away faster than static air. But the device that you are cooling will not reach a temperature below the ambient air. You can approach the ambient temperature asymptotically, but never reach it. Your example of "wind chill" has to do with what is called "evaporative cooling", i.e. that if an object is wet (like the surface of your skin) and the water evaporates, the energy that goes into the phase change (evaporating the water) will be extracted from the device providing the water to begin with. Time for a basic physics class. Sorry -- Tony Alfrey tonyalfrey@earthlink.net "I'd Rather Be Sailing" -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org