X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 30 [X] Return-Path: Received: from [209.87.238.133] (HELO intldata.ca) by logan.com (CommuniGate Pro SMTP 5.1.4) with ESMTP id 1738243 for flyrotary@lancaironline.net; Fri, 05 Jan 2007 10:48:48 -0500 Received-SPF: none receiver=logan.com; client-ip=209.87.238.133; envelope-from=jwhaley@intldata.ca Received: from jwhaley ([209.87.238.175]) by intldata.ca (intldata.ca) (MDaemon.PRO.v8.1.3.R) with ESMTP id md50000413354.msg for ; Fri, 05 Jan 2007 10:46:50 -0500 From: "Jeff Whaley" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Ideal cooling Date: Fri, 5 Jan 2007 10:46:48 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_001F_01C730B6.CD5C5530" X-Mailer: Microsoft Office Outlook, Build 11.0.5510 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3028 Thread-Index: Accw3W+B2LYm6CIzQsWnHbyHnk+pOwAAlF1A In-Reply-To: X-Spam-Processed: intldata.ca, Fri, 05 Jan 2007 10:46:50 -0500 (not processed: message from valid local sender) X-MDRemoteIP: 209.87.238.175 X-Return-Path: jwhaley@intldata.ca X-MDaemon-Deliver-To: flyrotary@lancaironline.net Reply-To: jwhaley@intldata.ca Message-ID: X-MDAV-Processed: intldata.ca, Fri, 05 Jan 2007 10:46:51 -0500 This is a multi-part message in MIME format. ------=_NextPart_000_001F_01C730B6.CD5C5530 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit "The Egg guys have been very successful using the Evans coolant. The fluid is less efficient, so it inflates the operating temperature. But it also brings a new very high boiling point to the party. So instead of operating at the normal 200F temp, they operate at 215F. But the boil over temp is way up there...I forget, but something like 260F or so. As a result, they end up with greater safety margin. A very sound decision for their installation. This because boil over is sudden, catastrophic, and essentially irreversible. When it blows, it blows." I don't see anything startling about this Evans coolant . 50/50 water and glycol at 15 psi has a boiling point of 265F. Either the boiling temperature is much higher than 260F or there is something else going on. JWW ------=_NextPart_000_001F_01C730B6.CD5C5530 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

“The Egg guys have been very successful using the Evans = coolant. The fluid is less efficient, so it inflates the operating temperature. = But it also brings a new very high boiling point to the party. So instead of = operating at the normal 200F temp, they operate at 215F. But the boil over temp is = way up there...I forget, but something like 260F or so. As a result, they end = up with greater safety margin. A very sound decision for their installation. = This because boil over is sudden, catastrophic, and essentially irreversible. = When it blows, it blows.”

 

I don’t see anything startling about this Evans coolant = … 50/50 water and glycol at 15 psi has a boiling point of = 265F.

Either the boiling temperature is much higher than 260F or there = is something else going on.

JWW

 

 

 

 

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