X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from cdptpa-omtalb.mail.rr.com ([75.180.132.120] verified) by logan.com (CommuniGate Pro SMTP 5.2c1) with ESMTP id 2490534 for flyrotary@lancaironline.net; Thu, 15 Nov 2007 18:54:24 -0500 Received-SPF: pass receiver=logan.com; client-ip=75.180.132.120; envelope-from=echristley@nc.rr.com Received: from [192.168.0.19] (really [66.57.38.121]) by cdptpa-omta05.mail.rr.com with ESMTP id <20071115235347.RZFP8432.cdptpa-omta05.mail.rr.com@[192.168.0.19]> for ; Thu, 15 Nov 2007 23:53:47 +0000 Message-ID: <473CDC16.2060604@nc.rr.com> Date: Thu, 15 Nov 2007 18:53:58 -0500 From: Ernest Christley User-Agent: Thunderbird 1.5.0.14pre (X11/20071023) MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: Harrison cores References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit George Lendich wrote: > Lynn, > Good information- what size are they? and how come these air conditioning cores take the pressure so well? > Presumably, because they're designed to withstand the pressure inside an air conditioning circuit. They're on the low pressure side of the circuit when the AC is on, but with the circuit off the pressure equalizes to a high value throughout the inside. Now, GM chose to use a thick core, probably to maximize the negative deltaT, but they could have.... >8*)