Thanks :-) It was fun and took less than $2,000 to develop. It was scary in one of the tests holding onto the thermal probe and running a microprocessor with no fan on an open case just wondering if the thing was gonna blow.
If anyone wants to find that company to license the technology and take a 20% cut, go for it. I doubt Dell would answer the phone if I called :-) /jim PS The next revision that is not publicly posted is even better... -----Original Message----- From: Greg Brown [mailto:[EMAIL PROTECTED] Sent: Sunday, January 18, 2004 7:57 PM To: [EMAIL PROTECTED]; Triangle Linux Users Group discussion list Subject: Re: [TriLUG] Slightly OT: Are there Really Quiet Computer Case Fans? Even though you might be want to get into computer design I could really see some company wanting to license that idea from you to create a more quiet 1U server. That's a really good idea. Greg On Sunday, Jan 18, 2004, at 05:45 US/Eastern, Jim Ray wrote: > Yes, quite fans exist. Watch the air flow rating (CFM, cubic feet per > minute) and noise rating (dBA, decibels A weighted). I had used Sunon > for > the manufacturer and specified model# KDE1204PKS3 for my 1U 19" rack > mount > unit. You might have to get specifications from the manufacturer and > parts > from electronics distribution like Avent. I got tired of listening to > that > Compaq Proliant that sounded like a helicopter taking off. > > Now, other principals analogous to proper HVAC design come into play > that > will allow you to *remove* fans: laminar air flow and air flow control. > Because most PC have more than one component with a fan, one must > consider > all inlets and outlets. By changing the direction of air flow on all > components to maximize air flow over the microprocessor, one may take > advantage of the other fans and completely remove the fan on the > microprocessor. > > I bought a Fluke meter with a thermal probe to measure my results and > have > some pictures at the bottom of the document that show what I did with > my > unit. Pardon the formal nature of the text. It had been written as a > patent yet was never submitted. I had rather spend $400 on a ski trip > and > don't think I'll be going into PC design any time soon. It was a lot > of > fun, though. Enjoy! > > http://www.neuse.net/thermochannel.htm > > BTW, polyethylene phthalate is simply a fancy name for a piece of > Mylar (DuPont Teijin Films). The prototype is available for view if > anybody is interested. > > Hth, > > Jim > > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On > Behalf > Of Scott Chilcote > Sent: Saturday, January 17, 2004 9:48 PM > To: [EMAIL PROTECTED] > Subject: [TriLUG] Slightly OT: Are there Really Quiet Computer Case > Fans? > > > Hi Folks, > > My job has me working within a six feet of a dual Xeon server. It has > at least five noisy fans, and sounds like a vacuum cleaner. > > I'm considering a ways to quiet this box, and one of them is to buy > some > fans that claim to be quiet to replace the current ones. I have no > idea how much this would help - for all I know, it has them already. > > Does anyone know whether truly quiet fans exist, or is this just an > advertising ploy? > > Another possibility is to buy some ethernet KVM tranceivers and move > the > machine elsewhere. Besides the $$$ these cost, I'm short on > alternative > space. > > If you've had a good experience with quieter fans, or have come up > with a better solution for this, please let me know. Replacing the > system isn't an option, but I've thought about putting it in a quieter > box. > > I can't scrape up enough for one of these: > > http://www.tomshardware.com/howto/20040115/index.html > > But it sure would be sweet! > > -- > Scott C. > > > -- > TriLUG mailing list : > http://www.trilug.org/mailman/listinfo/trilug > TriLUG Organizational FAQ : http://trilug.org/faq/ > TriLUG Member Services FAQ : http://members.trilug.org/services_faq/ > TriLUG PGP Keyring : http://trilug.org/~chrish/trilug.asc > > -- > TriLUG mailing list : > http://www.trilug.org/mailman/listinfo/trilug > TriLUG Organizational FAQ : http://trilug.org/faq/ > TriLUG Member Services FAQ : http://members.trilug.org/services_faq/ > TriLUG PGP Keyring : http://trilug.org/~chrish/trilug.asc > -- TriLUG mailing list : http://www.trilug.org/mailman/listinfo/trilug TriLUG Organizational FAQ : http://trilug.org/faq/ TriLUG Member Services FAQ : http://members.trilug.org/services_faq/ TriLUG PGP Keyring : http://trilug.org/~chrish/trilug.asc
