How would that work Bob? Actually Peltier junctions do not create cold. They move heat and then the distance the heat is moved is less than a quarter inch and you end up with more heat than you started with. BTW you need a heat sink for the back side of the Peltier. Back to square one. You can get more cooling from an ice cube. 73 Fred, AE6QL
-----Original Message----- >From: riese-k3...@juno.com >Sent: Jun 2, 2014 9:29 AM >To: fptowns...@earthlink.net >Cc: k6...@foothill.net, elecraft@mailman.qth.net >Subject: Re: [Elecraft] KPA-500 fan noise > >you guys > >add one of these less strain on the fan and ur ears > >Bob K3DJC > >http://en.wikipedia.org/wiki/Thermoelectric_cooling > > > >n Mon, 2 Jun 2014 08:46:45 -0700 (GMT-07:00) Fred Townsend ><fptowns...@earthlink.net> writes: >> I would hate to think what would happen if a water line breaks. Why >> not duct the air from a portable AC unit to the KPA-500. Then when >> the ducting breaks you won't have water all over the place... just >> cool air. >> Seriously folks, any chance the exhaust air from the KPA is being >> fed back into the air intake for the KPA? That will heat things up >> in a hurry. Maybe outside air (depending where you live) ducted to >> the KPA would keep things cooler. Failing that just empty the >> contents of the beverage cooler into your stomach and after a while >> the whole room will be spinning. The fans will be still running but >> you won't notice. >> 73 >> Fred, AE6QL >> >> -----Original Message----- >> >From: Fred Jensen <k6...@foothill.net> >> >Sent: Jun 2, 2014 8:28 AM >> >To: elecraft@mailman.qth.net >> >Subject: Re: [Elecraft] KPA-500 fan noise >> > >> >Our "Beverage Central" is located in my shack. I was contemplating >> >> >putting a heat exchanger on the KAP500 PA's and routing cold water >> from >> >the drink fridge through it. I guess that would class as >> >"re-engineering?" Haven't figured out how to get the plumbing out >> of >> >the fridge, however. >> > >> >73, >> > >> >Fred K6DGW >> >- Northern California Contest Club >> >- CU in the 2014 Cal QSO Party 4-5 Oct 2014 >> >- www.cqp.org >> > >> >On 6/2/2014 8:16 AM, Jim Brown wrote: >> >> On 6/2/2014 7:56 AM, AG0N-3055 wrote: >> >>>> You could always try replacing the fan with a quieter fan. >> >>> I would consider that myself, but only with one recommended by >> the >> >>> good people at Elecraft. >> >> >> >> It is generally a bad idea to try to re-engineer a product, >> especially >> >> one that is well designed. In this case, I would consider it a >> really >> >> bad idea. >> > >> > >> >______________________________________________________________ >> >Elecraft mailing list >> >Home: http://mailman.qth.net/mailman/listinfo/elecraft >> >Help: http://mailman.qth.net/mmfaq.htm >> >Post: mailto:Elecraft@mailman.qth.net >> > >> >This list hosted by: http://www.qsl.net >> >Please help support this email list: >> http://www.qsl.net/donate.html >> >Message delivered to fptowns...@earthlink.net >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to riese-k3...@juno.com >> > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
