Passive Ultra
What kind of cooling applications exist for military use ?
What I mean is following…. I wonder what kind of systems the military uses to cool down equipment, soldiers, medicine, plasma, etc…. and what are the challanges they face…. at google I found some, but I’m interested in knowing their real needs of cooling (navy, army, air force, gendarmerie, police, etc…) and challenges they face today. Is passive cooling enought or do they need active cooling… I’m asking about the military use because they normally look ahead and have harder or bigger challenges (environmental conditions, etc….) and later it will be used by civils.
What cooling technologies are used today by the military ? For example, in the communication sector (radars, radio transmitters, etc… they use thermelectric tecnology), in the electronic cooling sector they use vapous compression, in the night vision equipments they use stirling cycle to achieve ultra low cryogenic temperatures…. etc…. I’m lookinkg for answer that cover lots of application fields 
Many of the applications are the same as the ones that exist in corresponding civilian applications except maybe cooling of weapon systems.
MIL-HDBK-251 Reliability/Design Thermal Applications
This document details approaches to thermal design; methods for the determination of thermal requirements; selection of cooling methods; natural methods of cooling; thermal design for forced air, liquid-cooled, vaporization, and special (heat pipes) cooling systems. Topics covered are the standard hardware program thermal design, installation requirements, thermal evaluation, improving existing designs, and thermal characteristics of parts. Stress analysis methods are emphasized and specific step by step thermal design procedures are given.
cooling vest
http://www4.army.mil/news/article.php?story=8363
Electrical Power Cooling Technique
http://www.nrl.navy.mil/techtransfer/pdfs/E84.pdf
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