X-Message-Number: 16521 From: "Joseph W. Morgan" <> Subject: Cryogenic Refrigerators Date: Tue, 12 Jun 2001 09:06:49 -0700 This is a multi-part message in MIME format. ------=_NextPart_000_002F_01C0F31F.03BB0DA0 Content-Type: text/plain; charset="iso-8859-1" Closed-cycle cryogenic refrigerators would eliminate the need for a continuous, expensive, and vulnerable supply of bottled liquid nitrogen. However, this approach has its own problems. No liquid nitrogen would be required but an electrical outage or refrigerator failure could be a disaster. Reliability could be enhanced with back-up power supplies, redundant refrigeration systems, computer monitoring, and an emergency liquid nitrogen bottle. I assume economics rather then engineering is the obstacle. Comments? Joseph W. Morgan ------=_NextPart_000_002F_01C0F31F.03BB0DA0 Content-Type: text/html; [ AUTOMATICALLY SKIPPING HTML ENCODING! ] Rate This Message: http://www.cryonet.org/cgi-bin/rate.cgi?msg=16521