X-Message-Number: 6041
Date: Mon, 8 Apr 1996 02:06:57 -0700 (PDT)
From: Doug Skrecky <>
Subject: Should cryostats be turned into pressure cookers?

   At -195.8 F the boiling point of liquid nitrogen is actually lower than
 it needs to be for cryopreservation. If the boiling point could be
 increased boiloff would be reduced and storage costs lowered. If the
 flowrate for the gas produced by boiling is limited sufficiently the
 pressure inside a cryostat will increase till the flowrate increases to
 match the boiloff. This increased pressure will also increase the boiling
 point of liquid nitrogen itself, increase cryostat temperatures, reduce
 net boiloff and lower storage costs. 
   Should cryostats be turned into pressure cookers? Any comments? 


Rate This Message: http://www.cryonet.org/cgi-bin/rate.cgi?msg=6041