mechchem,
We did similar work about 17 years ago when I worked for the SSC (Superconducting Super Collider). You can search for SSC cryogenics and find information on how we modeled the LN2 heat shield.
You can purchase the course "Design and Development of Automotive Air Conditioning Systems" by Al Kargilis, P.E. at the following web site: http://www.vehicledevelopment.com/.
Kargilis is considered the "expert" in automotive A/C systems.
K. Stifle, P.E.
jparks,
I worked on a similar problem in a future life. Never got the program to work right. The problem is not trivial by any means. The only way to capture how the pressure/temperature in the tank is changing is to perform a transient analysis as suggested by butelja.
You might want to...
PacificSteve,
You might want to check out the booklet "Environmental Noise" from B&K. You can download a copy from their web site (www.bksv.com).
Kirk Stifle, P.E.
The "Bible" of thermoelectric cooling is the book Electronic Refrigeration by Julian Goldsmid. It can be purchased from Marlow Industries (www.marlow.com). Marlow is also a thermoelectric manufacturer. Another web site to try is www.zts.com. Lots of links to manufacturers and lots...