X-Message-Number: 6057
From: Brian Wowk <>
Date: Thu, 11 Apr 1996 11:58:30 -0500
Subject: Pressure Cooker Cryonics

	Doug Skrecky asks whether it would be possible to increase
the pressure at which cryonics patients are stored, thereby increasing
the storage temperature and reducing LN2 boiloff.  While this is
theoretically possible, the added costs and problems of pressurized
storage units would vastly exceed any savings from reduced LN2
utilization.  The critical point of nitrogen (highest temperature
at which boiling occurs) is about -150'C (still mighty cold)
at a pressure of 30 atmospheres-- eqivalent to 1000 feet underwater!

Brian Wowk          CryoCare Foundation               1-800-TOP-CARE
President           Human Cryopreservation Services   

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