On Saturday 29 October 2005 23:30, Don Wilhelm wrote: > That is why I recommend pulling the air upward from the heat sink - so it > will help pull the air from inside the KPA100 as well - in the same > direction as the internal fan moves the air.
I had a dramatic demonstration of how important it is to allow heated material to rise. My general contractor in my bathroom renovation mistook the pressure release safety valve in an oil filled towel warmer (don't ask, my wife Donna wanted it) at the top for the location to install the heating element. It heated the top corner hotter than safe and the rest of the towel warmer was stone cold after hours. I didn't expect to have to intervene in their work, but when the towel warmer was clearly not working, I became involved. "Heat Rises", I said. Putting the element at the bottom and restoring the safety valve had the whole towel warmer comfortably warm very quickly. Conduction of heat is nothing compared to its rising. Ian, G4ICV, AB2GR, K2 #4962 -- _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
