Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!linus!philabs!cmcl2!seismo!harvard!think!mit-eddie!genrad!decvax!tektronix!hplabs!sri-unix!mcgeer%ucbkim@Berkeley) From: mcgeer%ucbkim%Berkeley)@sri-unix.ARPA Newsgroups: net.physics Subject: Re: My "FUSION this decade?" this article Message-ID: <467@sri-arpa.ARPA> Date: Mon, 5-Aug-85 19:54:46 EDT Article-I.D.: sri-arpa.467 Posted: Mon Aug 5 19:54:46 1985 Date-Received: Sun, 11-Aug-85 06:17:56 EDT Lines: 13 From: mcgeer%ucbkim@Berkeley (Rick McGeer (on an aaa-60-s)) >BTW, heat pumps have an efficiency greater than 100%. They >are air conditioners run backwards. They generate heat on their >own and draw some from the ground. They still obey the >second law. I take it that efficiency, for purposes of this discussion, is joules of heat delivered/joules consumed in operation. What is the typical efficiency of a commercial heat pump? Rick.