Return-Path: Received: from [216.52.245.18] (HELO ispwestemail2.mdeinc.com) by logan.com (CommuniGate Pro SMTP 4.2.5) with ESMTP id 532346 for flyrotary@lancaironline.net; Sun, 14 Nov 2004 18:26:24 -0500 Received-SPF: none receiver=logan.com; client-ip=216.52.245.18; envelope-from=wschertz@ispwest.com Received: from 7n7z201 (unverified [67.136.145.236]) by ispwestemail2.mdeinc.com (Vircom SMTPRS 4.0.330.8) with SMTP id for ; Sun, 14 Nov 2004 15:26:08 -0800 Message-ID: <01bf01c4caa1$49c9bdc0$fc918843@7n7z201> From: "William" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: EWP Testing Date: Sun, 14 Nov 2004 17:25:15 -0600 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 Those interested in a very useful publication, which is moderately hard to get now, should see if their library has a copy of "Flow of fluids through valves, fittings, and pipe" published by the engineering department of CRANE Technical paper number 410 It has lots of useful and understandable material on how fluid properties affect flow of liquids and gases. Basically viscosity shows up in the numerator of equations to calculate pressure drop, therefore the pressure drop imposed by a heat exchanger or the piping leading to it will drop linearly with a decrease in viscosity. Bill Schertz KIS Cruiser # 4045 ----- Original Message ----- From: "Bob White" To: "Rotary motors in aircraft" Sent: Saturday, November 13, 2004 9:44 PM Subject: [FlyRotary] Re: EWP Testing > On Sat, 13 Nov 2004 20:52:22 -0600 > "William" wrote: > > Hi Bill, > > I was just looking at the viscosity of water. It varies from 1.31 cp at > 40 deg to 0.347 cp at 180 deg. What does that do to the flow rate > everything else staying the same? > > > Bob White > >> Bob, >> Pressure drop through a core is usually linear with the square of the >> flow rate, both for pumps and radiators. >> >> The point marked "real rad test" has my two evap cores in parallel >> being pumped by the mazda pump. >> >> Pumps in series add pressure, pumps in parallel add flow rate. >> Bill Schertz >> KIS Cruiser # 4045 > > > -- > http://www.bob-white.com > N93BD - Rotary Powered BD-4 (soon) > >>> Homepage: http://www.flyrotary.com/ >>> Archive: http://lancaironline.net/lists/flyrotary/List.html