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Experimental and numerical study of a 3D-printed aluminium cryogenic heat exchanger for compact Brayton refrigerators Open
Some cryogenic applications, such as for superconducting generators of wind power plants, require compact refrigerators. Heat exchangers are the most bulky components within the cold box of a cryogenic refrigerator. Thus, a reduction of th…
Design status of the ESS cryogenic moderator system Open
The Cryogenic Moderator System (CMS) has been designed to cool high-energy neutrons down to cold neutrons in two cryogenic hydrogen moderators (four ones in the future) by forced flow of subcooled liquid hydrogen at 17 K and 1.0 MPa. At 5 …
Thermodynamic and economic aspects of the Nelium Turbo-Brayton refrigerator development for the FCC-hh Open
Within the conceptual design study for the Future Circular Hadron Collider (FCC-hh) it was shown, that a large part of the total cryogenic heat load falls into the temperature range between 40 to 60 K. Thus, additional cryogenic refrigerat…
An integrated mixed refrigeration cycle for pre-cooling of refrigeration below 25 K Open
Two trends can be found in current large-scale cryogenic projects. The first is the ever-increasing capacity requirements, while also a shift towards cooling demands at higher temperatures is observed. Conventional helium cycles require th…
Towards the conceptual design of the cryogenic system of the Future Circular Collider (FCC) Open
Following the update of the European strategy in particle physics, CERN has undertaken an international study of possible future circular colliders beyond the LHC. The study considers several options for very high-energy hadron-hadron, ele…
Mixed refrigerant cycle with neon, hydrogen, and helium for cooling sc power transmission lines Open
The use of superconductors in very long power transmission lines requires a reliable and effective cooling. Since the use of cryocoolers does not appear feasible for very long distances, a cryogenic refrigeration cycle needs to be develope…
ESS Target Moderator Cryogenic Plant : Process Design Open
The European Spallation Source (ESS) project is a neutron spallation source facility currently under construction outside Lund, Sweden. The ESS accelerator will deliver a 5 MW proton beam to a spallation target at 2.0 GeV with a nominal cu…