When the operation temperature is 20 K, the cost of the refrigeration system is about 40% lower than that under the operating temperature of 4.5 K, realizing that the
conduction cooling technology would be available in the Tokamak magnet system [14, 15].
The ABC550 and MBC550 Series open-frame power supplies for industrial and medical applications deliver up to 550 W in a compact 3 x 5-inch footprint and can be utilized in many conditions, including convection cooled (no fans) up to 150 W,
conduction cooling (heat-sink surface) up to 250 W, or up to 550 W in forced-air-cooled environments.
Designed to be mounted on a cold plate for
conduction cooling, the unit also has an optional shrouded heat sink for forced-air cooling.
The cable load comprises an AIN substrate within an aluminum housing to achieve a good compromise between performance and
conduction cooling and the length of the coaxial cable is customized to suit the specific application.
Whilst passive cooling is still perfectly viable in many applications, this increase in power consumption means that allowances for additional cooling solutions, such as heat spreaders for
conduction cooling, must be made.
Similarly, using
conduction cooling makes the thermal dissipation system easier and less expensive to achieve.