Abstract: Disclosed is an exhaust duct (1) for a gas turbine engine (50), comprising a silencer section (12). At least two plate-shaped silencer baffles (20) are provided inside the silencer section (12). At least one of the plate-shaped silencer baffles is configured as a heat exchange device in that it comprises at least one internal cavity (22) suitable for receiving a heat exchange fluid and leakproof with respect to the interior of the exhaust duct, wherein the at least one internal cavity is fluidly connected to the outside of the exhaust duct at an inlet port and an outlet port (23, 24). This device is useful for recuperating exhaust heat from exhaust gases of the gas turbine engine without the expense and additional space required for providing a heat recovery steam generator.

Abstract: Systems and methods from removing heat generated by a heat sink of a magnetic resonance imaging (MRI) system are provided. One system includes a coldhead sleeve cooling arrangement for a coldhead of the MRI system. The coldhead sleeve cooling arrangement includes a coldhead sleeve configured to receive therein a coldhead of an MRI system and a cooling system surrounding an outer surface of the coldhead sleeve. The cooling system uses helium gas to remove heat from the coldhead sleeve.

Abstract: Systems and methods for self-sealing a coldhead sleeve of a magnetic resonance imaging system are provided. One coldhead sleeve arrangement includes a coldhead sleeve configured to receive therein a coldhead of an MRI system and having an open end. The coldhead sleeve arrangement also includes a sealing member coupled at the open end of the coldhead sleeve and configured in a normally closed position covering the open end.

Abstract: Systems and methods for self-sealing a coldhead sleeve of a magnetic resonance imaging system are provided. One coldhead sleeve arrangement includes a coldhead sleeve configured to receive therein a coldhead of an MRI system and having an open end. The coldhead sleeve arrangement also includes a sealing member coupled at the open end of the coldhead sleeve and configured in a normally closed position covering the open end.

Abstract: Systems and methods from removing heat generated by a heat sink of a magnetic resonance imaging (MRI) system are provided. One system includes a coldhead sleeve cooling arrangement for a coldhead of the MRI system. The coldhead sleeve cooling arrangement includes a coldhead sleeve configured to receive therein a coldhead of an MRI system and a cooling system surrounding an outer surface of the coldhead sleeve. The cooling system uses helium gas to remove heat from the coldhead sleeve.

Abstract: A superconducting cable cooling system, wherein coolant continually provides cooling to superconducting cable, comprising a plurality of nodes within a superconducting cable network and a plurality of legs of superconducting cable which interconnect each of the nodes of the superconducting cable network.

Abstract: A system for cooling one or more discrete superconducting devices wherein a primary refrigerator subcools cryogenic liquid for desubcooling in the devices and subsequently resubcools this liquid in a recirculation loop, and additional cryogenic liquid is maintained in a subcooled condition within a reserve storage container by diversion of some of the refrigeration generated by the primary refrigerator into the reserve storage container.

Abstract: A cryogenic tank system wherein cryogenic liquid from a primary cryogenic liquid storage tank is subcooled by refrigeration generated by a cryocooler, passed into an auxiliary tank, pressurized, and returned to the primary storage tank, preferably by way of the cryocooler, thus cooling the storage tank contents and reducing the pressure within and the vapor losses from the storage tank.

Abstract: A system for providing cooling to cable such as superconducting cable which employs at least one cryocooling station or consolidated cryocooler/pumping station which processes coolant involving multiple cable lengths.

Abstract: A method for operating a cryocooler wherein some cryocooler working gas is diverted from the pressure wave pathway before passing to the cold portion of the cryocooler, passed to a getter for adsorptive cleaning of contaminants, and returned to the pressure wave pathway at a warm portion of the pressure wave pathway.

Abstract: A system for generating low temperature refrigeration for use such as cooling superconducting cable wherein a neon based refrigerant fluid is work expanded by a sealed turboexpander/loader to generate refrigeration which is used to cool heat transfer fluid for provision to the use point.

Abstract: A method wherein refrigeration is generated, preferably using a pulse tube cryocooler or refrigerator, to produce cold working gas which is used to liquefy coupling fluid circulating between a coupling fluid liquid reservoir and a refrigeration load, such as superconductivity equipment, using thermo-siphon effects.