Liquid air energy storage (LAES) is a promising large-scale energy storage technology that supports renewable electricity integration and reduces carbon emissions. The cold energy storage unit plays a critical role in determining the efficiency of the LAES system. Currently, solid-phase packed beds are commonly used as cold energy storage units in LAES due to their safety and ease of...
The Central Helium Liquefier (CHL) for the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory (ORNL) supports a primary superconducting linear accelerator (LINAC) load up to 2.4 kW at 2.1 K. Sub-atmospheric saturation conditions in the LINAC are generated and maintained by a sub-atmospheric cold box (SCB) within the CHL. The SCB contains four magnetic bearing cold compressors...
The process simulation model for the Spallation Neutron Source (SNS) cryogenic system consists of a Central Helium Liquefier (CHL) and LINear ACcelerator (LINAC): 30 cryomodule equipped with a dedicated JT valve and its heat exchanger (Vapor vs Supercritical Helium). Each cryomodule has embedded heaters to regulate the suction pressure of a cold compressor train. By adopting the operation...
Boil-off gas (BOG) in cryogenic vessels must be vented to keep the pressure below the limit and preserve the safety of the tank. Since liquefaction consumes a lot of energy, it is not economical to vent it directly. Undoubtedly, providing refrigeration power to reliquefy the evaporated gas or subcool the cryogenic fluid is a superior scheme. Therefore, an efficient cryogenic refrigerator is...
Cryogenic mixed-refrigerant cycles (CMRCs) are a promising technology for providing cryogenic temperatures in several areas of research and technology, offering high power density and high efficiency combined with scalability and inexpensive process design.
In order to achieve high process efficiency, the ideal mixture composition and operating conditions for a specific application need to be...
