X-Message-Number: 2075 Date: Wed, 7 Apr 93 03:03:08 -0500 From: (Steve Jackson) Subject: Re: cryonics: #2065-#2069 Questions for Brian: Why two refrigerators? Is one for backup? Or does it just take two to cool the area you have in mind? (If it takes two, do we need a third for backup, or can one keep the room cool for long enough to repair the other?) Is the annual operating cost of $5,000 for one refrigerator unit, or two? And does that include the 10,000-hour maintenance? (10K hours is close enough to a year that I'd do it annually and be safe.) What is the service life of such a system? I think I agree with your conclusion that LN2 is still the way to go, but I don't follow all your numbers on the refrigerator costs. Your latest design still uses square cells. Is there a problem with hexagons? It's certainly the most efficient way to use the space. Rate This Message: http://www.cryonet.org/cgi-bin/rate.cgi?msg=2075