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FSU-CAPS' helium loop cooling system
The Center of Advanced Power Systems at Florida State University bought a custom-built cryostat from CryoZone.
The objective of this cryostat is to provide a flow of 30K helium gas for use in various CAPS HTS experiments. Core of the system are 4 CryoFans of the Noordenwind type. Each of these provides a flow of helium to an AL330 cryocooler to transport their generated cooling capacity.
The heat exchangers used are designed by CryoZone and allow CAPS to remove one cryocooler while the rest of the system can remain cold and functional. This assures redundancy.
The different components (CryoFans, cryocoolers, heat-exchangers, valves) are built into a 1000 mm cryostat to form one integrated system. To allow future flexibility, none of the components are welded to the cryostat or lines: all are connected by flange and VCR couplings.
The helium gas delivered by the combined four CryoFans is delivered to and returned from the application by two flexible VJ hoses with bayonets. In this way, CAPS can connect the current or future HTS application of their choice.
