X-Message-Number: 2088 Newsgroups: sci.cryonics From: (Marvin Minsky) Subject: Re: Thermoelectric Blues Message-ID: <> References: <> <> Date: Thu, 8 Apr 1993 17:00:51 GMT Before pursuing this further, can anyone state clearly what is the efficiency of an anti-peltier device operating at -80 C to some lower temperature? My impression was that the efficiency of such devices are or the order of a mere couple of percent at room temperature. The entropy cost, dQ/T increases as T decreases, so you have to think of multiplying that efficiency (or is it even worse at lower temperatures) by this factor as well, because the counter-junction has to be refrigerated down to the base -80 C temperature. We can't assess the practicality of solid state cooling without having this critical number in hand! Rate This Message: http://www.cryonet.org/cgi-bin/rate.cgi?msg=2088