X-Message-Number: 2043
Subject: CRYONICS Thermocouple Cooling?
Date: Wed, 31 Mar 93 08:50:22 EST
From: 

Brian Wowk mentioned recently that in his cold room design, it would
be cheaper to provide all of the cooling using electrically powered
thermocouples when electricity is available, and to only have the
liquid nitrogen to deal reliably with power failures.

Does the same argument apply to existing dewars?  I understand that
liquid nitrogen costs are a small fraction of maintenance costs, so at
best it would be a small savings.  But it would be neat if such an
unconventional approach were actually economical.

Tim Freeman

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