Return-Path: Received: from smtp3.gateway.net ([208.230.117.247]) by ns1.olsusa.com (Post.Office MTA v3.5.3 release 223 ID# 0-71175U5500L550S0V35) with ESMTP id com for ; Sat, 24 Mar 2001 02:09:13 -0500 Received: from f3g6s4 (1Cust107.tnt2.coeur-dalene.id.da.uu.net [63.20.49.107]) by smtp3.gateway.net (8.9.3/8.9.3) with SMTP id CAA04035 for ; Sat, 24 Mar 2001 02:18:21 -0500 (EST) Message-ID: <001801c0b432$d39b2ae0$6b31143f@f3g6s4> Reply-To: "dfs" Reply-To: lancair.list@olsusa.com From: "dfs" To: "Lancair list" Subject: Peltier Modules Date: Fri, 23 Mar 2001 23:19:53 -0800 X-Mailing-List: lancair.list@olsusa.com Mime-Version: 1.0 <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> << Lancair Builders' Mail List >> <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> >> OUCH Brent! - 3 KW! Let's see: 3KW at 12 volts is right close to 250 amps (or 125 A at 24 volts), if I haven't slipped a decimal point! That's gonna take a bit of at least #1 or 2 AWG cable (maybe bigger!) in order to get some power to the modules without too much line drop (especially when one considers the fact that if the line resistance is only 0.1 ohms total, that's a drop of 25 volts in a 12 volt airplane and 12.5 A in a 24 volt one) which means, of course, that it'd be hard to get 3KW at the load. Then there's the alternator big enough to handle the load, plus something like a hefty battery contactor to turn things on and off. Looks like the heat from the (reasonably sized) cables would likely offset the cooling you'd get from the modules. Seems the Peltier coolers present some INTERESTING (!) problems. Dan Schaefer >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> LML website: http://www.olsusa.com/Users/Mkaye/maillist.html LML Builders' Bookstore: http://www.buildersbooks.com/lancair Please send your photos and drawings to marvkaye@olsusa.com. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>