Abstract: A magnetic refrigeration apparatus according to the present disclosure includes a magnetic-field source and two or more bed rings. The bed rings can be arranged in pairs with shared cold and hot fluid plenums. A flow of heat transfer fluid may pass at least partially radially through the shared fluid plenum or through a connection between the fluid plenum and one or more flow tubes. The MR apparatus and systems of the present disclosure may further include one or more circumferential flux returns with radial through-hole passageways to accommodate flow tubing. For apparatus configurations with an even number of bed rings, the axial dimension of the passageways may be smaller than the circumferential dimension of the passageways.

Abstract: A magnetic refrigeration apparatus includes one or more beds of magnetocaloric material arranged along a circumferential direction. The apparatus also includes a heat transfer fluid, one or more hot side heat exchangers (HHEX), one or more pumps or fluid displacement devices configured to move the heat transfer fluid, and a magnetic-field source. The magnetic-field source generates magnetic flux oriented substantially in a radial direction through the beds. The field source advantageously includes one or more pole pieces, one or more axial-end magnets, and one or more axial-end flux return pieces. Additionally, one or more circumferential flux returns, one or more gap flux return pieces, one or more side magnets, and one or more side flux return pieces can be added to increase system performance and reduce cost.

Abstract: A magnetic refrigeration apparatus according to the present disclosure includes a magnetic-field source and two or more bed rings. The bed rings can be arranged in pairs with shared cold and hot fluid plenums. A flow of heat transfer fluid may pass at least partially radially through the shared fluid plenum or through a connection between the fluid plenum and one or more flow tubes. The MR apparatus and systems of the present disclosure may further include one or more circumferential flux returns with radial through-hole passageways to accommodate flow tubing. For apparatus configurations with an even number of bed rings, the axial dimension of the passageways may be smaller than the circumferential dimension of the passageways.

Abstract: A magnetic refrigeration apparatus includes one or more beds of magnetocaloric material arranged along a circumferential direction. The apparatus also includes a heat transfer fluid, one or more hot side heat exchangers (HHEX), one or more pumps or fluid displacement devices configured to move the heat transfer fluid, and a magnetic-field source. The magnetic-field source generates magnetic flux oriented substantially in a radial direction through the beds. The field source advantageously includes one or more pole pieces, one or more axial-end magnets, and one or more axial-end flux return pieces. Additionally, one or more circumferential flux returns, one or more gap flux return pieces, one or more side magnets, and one or more side flux return pieces can be added to increase system performance and reduce cost.

Abstract: A magnetic refrigeration apparatus includes beds of magnetocaloric material with a hot side and a cold side. The apparatus also includes a magnet to apply a magnetic field to the beds, a heat transfer fluid, a pump to circulate the heat transfer fluid, a hot side heat exchanger, a cold side heat exchanger, and a controller to control the flow of heat transfer fluid from the cold side to the hot side of the beds when the magnetic field on the beds is high at an average flow rate of ?H for a duration ?tH. The controller also controls the flow of heat transfer fluid from the hot side of the beds to the cold side of the beds when the magnetic field on the beds is low at an average flow rate of ?C for a duration ?tC, where ?tC>?tH and ?C<?H.

Abstract: A magnetic refrigeration apparatus includes one or more beds of magnetocaloric material, each having a hot side and a cold side. The apparatus also includes a magnet to apply a time-varying magnetic field to the one or more beds of magnetocaloric material, a heat transfer fluid, a means to circulate the heat transfer fluid, a hot side heat exchanger (HHEX), a cold side heat exchanger (CHEX), and a controller to control the flow of heat transfer fluid from the cold side of the one or more beds to the hot side of the one or more beds when the magnetic field on the one or more beds is high at an average flow rate of ?H for a duration ?tH. The controller also controls the flow of heat transfer fluid from the hot side of the one or more beds to the cold side of the one or more beds when the magnetic field on the one or more beds is low at an average flow rate of ?C for a duration ?tC where ?tC>?tH and ?C<?H and ?tH?H=?tC?C.

Abstract: Where the loss of volatile organics during storage of high gravity oil is minimized by forming a flowable or pumpable gel in the high gravity oil, (and/or condensates and distillates), as they are introduced to a storage vessel, the gel is broken by the addition of a small amount of an amine/formaldehyde reaction product, which may be either a triazine or a mixture of non-triazine reaction products. The previously gelled hydrocarbon may then by more readily moved by draining or pumping into a pipeline.

Abstract: New fluids are disclosed for use in servicing subterranean formations containing oil and gas. In particular, an improved chemical gelling additive for hydrocarbon based fracturing fluids is disclosed having reduce, negligible or no volatile phosphorus at temperatures below about 250° C.

Abstract: Where the loss of volatile organics during storage of high gravity oil is minimized by forming a flowable or pumpable gel in the high gravity oil, (and/or condensates and distillates), as they are introduced to a storage vessel, the gel is broken by the addition of a small amount of an amine/formaldehyde reaction product, which may be either a triazine or a mixture of non-triazine reaction products. The previously gelled hydrocarbon may then by more readily moved by draining or pumping into a pipeline.

Abstract: New fluids are disclosed for use in servicing subterranean formations containing oil and gas. In particular, an improved chemical gelling additive for hydrocarbon based fracturing fluids is disclosed having reduce, negligible or no volatile phosphorus at temperatures below about 250° C.

Abstract: New fluids are disclosed for use in servicing subterranean formations containing oil and gas. In particular, an improved chemical gelling additive for hydrocarbon based fracturing fluids is disclosed having reduce, negligible or no volatile phosphorus at temperatures below about 250° C.

Abstract: New fluids are disclosed for use in servicing subterranean formations containing oil and gas. In particular, an improved chemical gelling additive for hydrocarbon based fracturing fluids is disclosed having reduce, negligible or no volatile phosphorus at temperatures below about 250° C.

Abstract: A method of servicing a computer system without interrupting operation of the computer system, by connecting a computer component to a board of the computer system, detecting connection of the computer component to the system board using a control circuit, supplying power to the voltage input of the computer component in response to detecting the connection, and thereafter monitoring the power supplied to the voltage input of the computer component. The method may be used for core computer components such as CPU modules and voltage regulator modules. Power to the voltage input of the computer component is turned off in response to a determination that a current level of the power supplied to the voltage input exceeds a specified level. A fault signal is latched in an active state in response to the determination; the fault signal is reset when the component is removed from the system.

Abstract: A method and system for monitoring and adapting to configuration changes in a data processing system having a known configuration, while power is applied thereto. In response to a configuration change in the data processing system, values are calculated for multiple system operating factors. An alert is provided to a user if at least one of said calculated values, among the multiple system operating factors, is not within a predetermined range of values for the multiple system operating factors. In addition, the operation of the data processing system is restricted to accommodate for any system operating factors which are not within the predetermined range of values, such that the data processing system is guarded from damage due to an unstable configuration.

Abstract: Potassium formate is used together with a sulfide scavenger to remove and otherwise treat sulfhydryl compounds such as hydrogen sulfide present in hydrocarbons and aqueous substrates

Abstract: A power subsystem for a computer system allows a voltage regulator module (VRM) to be removably connected to a system board, while limiting disturbances on the voltage rails of the system board. The electrical disturbances are prevented by charging voltage outputs of the DC/DC circuit of the VRM prior to directly connecting the voltage outputs to the voltage rails. To ensure that the voltage outputs are properly charged, a VRM connector may be used in which the voltage output pins are shorter than charge pins which are coupled to respective capacitors and to the voltage outputs of the DC/DC circuit. In this manner, as the connector is mated with a corresponding connector on the system board, the capacitors are first charged via resistive paths connected to the voltage rails, prior to directly connecting the voltage outputs to the voltage rails. The VRMs are thus “hot-pluggable,” enabling a user to upgrade or service the system with no interruption.

Abstract: A circuit card capable of live insertion into an activated electronic system includes a terminal edge from which an edge connector extends a first length. An input decoupling capacitance resides across the edge connector. A backplane within the activated electronic system receives the circuit card, wherein the backplane includes at least one voltage plane, a backplane receptor, and card guide receptor means. The backplane receptor electrically couples the edge connector to the voltage plane when the edge connector engages the backplane receptor. Card guide means are provided for guiding and connecting the circuit card into the backplane, and include at least one conductive member for engaging the card guide receptor means. The conductive member extends a second length from the terminal edge, wherein the second length is greater than the first length. At least one conductive path electrically couples the conductive member across the input capacitance.

Abstract: A device for solving the electrical, physical, architectural and thermal challenges associated with designing a computer system is disclosed. A memory controller chipset having two or more chips mounted on opposite sides of a system planar helps balance the thermal profile of the system and achieve the strict spacing requirements of advanced computer processors relative to the memory controller chipset. Although the chips are staggered on opposite sides of the system planar, the adjacent edges of the chips substantially align with one another to minimize their separation.

Abstract: A mechanism has a subassembly that contains a microprocessor. The mechanism allows the microprocessor to be easily installed through frontal or rear access into a rack drawer and subsequently docked into a receiving assembly. The docking mechanism is multi-axis in that installation of the subassembly occurs along a single axis, but docking of the microprocessor occurs along an axis that is normal to the installation axis. Actuation of the installation mechanism is accomplished with a front-to-rear motion which sequentially provides a power connection to the microprocessor and displaces it in a vertical motion. This vertical motion registers and mates the microprocessor with the assembly. The microprocessor is preloaded in its final latched position to restrain it from shock and vibration events while supporting the assembly in a fixed and stable position.

Abstract: Very dry air is made for drying grain and other particulates. The air is dried by first cooling under pressure to remove moisture, then contacted with a drying device such as a vessel containing desiccant, then heated and released into a bed of particulates.