2023/11/01 by Jack-André Schmidt, Schmidt, Jack-Andre, Bernd Schmidt +10
Engineering · Physics and Astronomy · #Advanced Thermodynamic Systems and Engines #Advanced Thermodynamics and Statistical Mechanics #Applied Physics (physics.app-ph) #FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #Quantum Physics (quant-ph) #Spacecraft and Cryogenic Technologies
paper · pdf · doi:10.48550/arxiv.2311.00605
openalex publication_date 2023/11/01 · openalex created_date 2023/11/03 · openalex updated_date 2026/07/28
Here we report the performance of a small scale 4 K pulse tube cryocooler operating with a low input power reaching a minimum temperature of 2.2 K, as well as a cooling capacity of over 240 mW at 4.2 K. The compressor is air cooled and can be supplied by single phase power sockets. With an input power of about 1.3 kW the coefficient of performance reaches values of up to 185 mW/kW, which is among the highest currently reported values for small to medium power pulse tubes. The combination of an oil-free Helium compressor and low maintenance pulse tube cryocooler provides a unique miniaturized, energy efficient and mobile cooling tool for applications at 4 K and below.