10 results about "Magneto hydrodynamic" patented technology

A pulse-type radiation-driven test platform and an operating method therefor. The test platform comprises a rail support system (10), and a driven section (4), an auxiliary film-clamping mechanism (5), a spray pipe (6) and a test section (8), which are coaxially connected in sequence and can move along a surface of the rail support system; a magnetohydrodynamic acceleration system (7) is provided in the spray pipe (6); the interior of the test section (8) is in communication with a vacuum system (9); and the interior of the driven section (4) is in communication with a gas supply system (11). In order to improve the performance of the test platform, a main film-clamping mechanism (3) and a driving section (2) are mounted upstream of the driven section (4), and a radiation source (1) can act on one side at the top of the driving section (2) or the driven section (4).

An apparatus for producing drops of liquid metal for additive manufacturing comprises a reservoir for supplying liquid metal and a pressure chamber in fluid communication with the reservoir. The pressure chamber has a channel therein where compressive forces are applied on the liquid metal therein. Upper and lower electrodes apply a current through the liquid metal in the pressure chamber. This current creates an electric field that produces radially inward directed Lorentz forces on the liquid metal. This compressive force provides pressure in the longitudinal direction for ejecting the liquid metal through the orifice to form liquid metal droplets.

This invention provides a multiphysics synergistic activated water generator for preparing air catalyst-containing bottom liquid, which includes a device for generating a bottom liquid specifically for air catalyst formulation. [Solution] A closed-loop circulating water production process apparatus is formed, comprising a circulating liquid storage tank (1), a multi-stage fluid cutting unit (2), a micro-nano membrane diffuser (3), a magnetohydrodynamic power activation pipe (4), a circulating inverter pump (5), and a plate-type heat exchanger (6), which are sequentially connected in series by pipelines. The circulating liquid storage tank is the starting and ending point. The circulating liquid storage tank has a far-infrared radiation coating layer (11) on its inner wall that covers a radiation wavelength band of 4 μm to 14 μm, and an ultrasonic vibrating plate (12) with a frequency of 40 kHz is provided at the bottom of the inner tank. The multi-stage fluid cutting unit is arranged alternately in multiple layers and includes a fixed tooth plate (21) and a rotating tooth plate (22) that mesh with each other, as well as a drive motor (23) that drives each rotating tooth plate. The dynamic and stationary teeth of the fixed and rotating tooth plates have a gap between them.

An apparatus comprises: electric circuits including a first circuit and a second circuit to operate in multiple modes including a first mode in which the first circuit dissipates more heat than the second circuit and in a second mode in which the second circuit dissipates more heat; and a coolant loop along which the first circuit and the second circuit are thermally coupled at spaced-apart locations, wherein the coolant loop includes a reversible magnetohydrodynamic (MHD) pump to pump a cold liquid metal through the coolant loop in reversible coolant-flow directions responsive to reversible current directions of a current applied to the MHD pump, such that when the first mode is active, the cold liquid metal initially encounters the first circuit and then encounters the second circuit, and when the second mode is active, the cold liquid metal initially encounters the second circuit and then encounters the first circuit.

The invention relates to an energy storage arrangement (1) with a redox energy storage device (7), which comprises at least one redox flow cell and is connected via at least two channel systems (4) to at least two electrolyte containers (3), in each of which an electrically conductive electrolyte (5) is stored, and an MHD module (10), which comprises at least two magnetohydrodynamic pump modules (20) and at least one evaluation and control unit (12), wherein the at least one evaluation and control unit (12) is configured to control the at least two magnetohydrodynamic pump modules (20), wherein the at least two magnetohydrodynamic pump modules (20) each comprise a magnet device and an electrode device, which is configured toto conduct an electric current provided by the at least one evaluation and control unit (12) through the corresponding electrically conductive electrolyte (5) in a channel section of a corresponding channel system (4), so that, in conjunction with a magnetic field generated by the magnetic device, a Lorentz force is created which selectively accelerates the electrically conductive electrolyte (5) in the corresponding channel section, so that a resulting pressure build-up causes a desired volume flow of the electrically conductive electrolyte (5) through the corresponding channel system (4) and the redox energy storage device (7).

A cooling system (100) for thermal management of a component (102), the cooling system (100) comprising: a coolant circuit (104) comprising a plurality of sections; a magnetohydrodynamic pump (114) configured to pump a coolant around the coolant circuit (104) by applying a first electric field and a first magnetic field through a first section (106) of the plurality of sections, the first magnetic field being applied by a first electromagnet (124) of the magnetohydrodynamic pump (114), the first electromagnet (124) being an alternating current electromagnet, the coolant being an electrically conducting fluid comprising ferromagnetic particles; a substrate (126) comprising a second section (108) of the plurality of sections, the second section (108) being for fluidic communication of the coolant and for positioning adjacent the component; and a magnetic refrigerator (109) configured to, after heat is absorbed by the coolant in the second section (108) of the coolant circuit (104), cool the coolant by a magnetocaloric effect.

Methods and systems for forming break-away supports during additive manufacturing of objects via magnetohydrodynamic (MHD) jetting. In MHD jetting supports may be required for certain overhang areas and / or other features. On a surface or surfaces that will contact the object and / or a build plate (or the like), a plasma discharge may be conducted to create a treated surface. The treated surface bonds weakly with the support relative to inter-layer bonds between construction layers. Thus, after printing is complete the supports can be easily separated without strong mechanical forces that may have otherwise damaged the printed object.

Devices, systems, and methods are directed to applying magnetohydrodynamic forces to liquid metal to eject liquid metal along a controlled pattern, such as a controlled three-dimensional pattern as part of additive manufacturing of an object. Electric current delivered to a meniscus of the liquid metal in a quiescent state can be directed to exert a pullback force on the liquid metal. The pullback force can be sufficient to draw the liquid metal, in the quiescent state, in a direction toward the nozzle to reduce the likelihood of unintended wetting of surfaces of the nozzle between uses of the nozzle.

An apparatus comprises: a power converter to convert DC current to AC current and supply the AC current to a load; a cooling loop having a cold plate thermally coupled to the power converter, and a magnetohydrodynamic (MHD) pump to pump a liquid metal coolant to the cold plate to cool the power converter; and an in-line rectifier, coupled to the power converter, the MHD pump, and the load, configured to: transfer the AC current, unrectified, between the power converter and the load; and rectify the AC current into a unipolar current that flows in a single current direction over a cycle of the AC current, and supply the unipolar current to the MHD pump to compel the MHD pump to pump the liquid metal coolant to the cold plate in a single coolant flow direction over the cycle.

The invention relates to an energy storage arrangement with a redox energy storage device (7) comprising several redox flow cells (8) and connected via two channel systems to two electrolyte containers, each containing an electrically conductive electrolyte (5), and an MHD module comprising an evaluation and control unit and, for each of the individual redox flow cells (8), two magnetohydrodynamic pump modules (20) integrated into the individual redox flow cells (8), wherein the evaluation and control unit is configured to control the magnetohydrodynamic pump modules (20) via at least one control unit (7.2), wherein the two magnetohydrodynamic pump modules (20) each comprise at least one magnet device (24) and one electrode device (22), which is configured to receive a signal from the control unit (7.2).2) to conduct the supplied electric current within the corresponding redox flow cell (8) through the corresponding electrically conductive electrolyte (5), so that, through interaction with a magnetic field generated by the magnetic device (24), a Lorentz force is created which selectively accelerates the electrically conductive electrolyte (5) within the corresponding redox flow cell (8), so that a resulting pressure build-up causes a desired volume flow of the electrically conductive electrolyte (5) through the corresponding channel system and the redox energy storage (7).