Magnetohydrodynamic power generation system capable of directly converting heat energy into electric energy

Abstract

The invention discloses a magnetohydrodynamic power generation system capable of directly converting heat energy into electric energy. The magnetohydrodynamic power generation system comprises an annularly-enclosed channel, wherein a first one-way valve and a second one-way valve which are arranged in the same direction are arranged on the channel; the channel is filled with magnetic fluid; and a solar panel for heating the magnetic fluid by means of solar energy is arranged between the two one-way valves. The magnetohydrodynamic power generation system also comprises magnets which are arranged in parallel with the channel, wherein a group of leads which are vertical to a magnetic field are arranged at intervals between the magnets and the channel; and the two ends of the leads are connected with power storage equipment or connected to a power grid. During working, solar energy heat is absorbed by the solar panel to heat the magnetic fluid in the channel in order that the magnetic fluid expands. The heated magnetic fluid starts flowing due to expansion, and flows in the annular channel along a single direction at a certain speed after passing through the one-way valves. When the magnetic fluid flows through the channel close to the magnets at a certain speed, flowing magnetic fields are formed between the magnetic fluid and the magnets, and the leads cut magnetic induction lines through relative motion of the magnetic fluid and the magnets, so that current is generated in the leads.

Description

Technical field: [0001] The invention belongs to the field of energy conversion, and relates to the power generation of magnetic fluid, in particular to a magnetic fluid power generation system directly converting heat energy into electric energy. Background technique: [0002] Magnetic fluid is a new type of functional material, which not only has the fluidity of fluid but also has the magnetism of solid magnetic materials, and has a wide range of application prospects. Magnetic fluid power generation generally refers to coal-fired magnetic fluid power generation technology, which uses conductive gas as a conductive fluid, directly heats it with fossil fuels to ionize it into a conductive ion flow, and then makes it flow in a magnetic field and cuts magnetic induction lines to generate current. It can not only improve the utilization rate of coal resources, but also has the characteristics of low pollution. The schematic diagram of a coal-fired magnetic fluid power genera...

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Problems solved by technology

[0004] Although coal-fired magnetic fluid power generation is relatively advanced and energy-saving among existing power generation technologies, this design and power generation method still has the following disadvantages: First, it still needs to burn fossil fuels to provide heat energy, which has a certain amount of carbon emissions, and low energy consumption. The development goals of carbon environmental protection are inconsistent; the second is to add easily ionized substances, such as alkali metal compounds such as potassium and cesium, to the magnetic fluid in order to improve the conductivity. Their properties are very active, which is not only dangerous to operate but also requires a certain preparation process; Active alkali metal compounds are added to the fluid, which has high requirements on the material and equipment safety of the magnetic fluid flow channel, and increases the manufacturing cost of the entire system

[0005] Compared with thermal power generation, coal-fired magnetic fluid power generation technology reduces the use of fossil fuels to a certain extent, but it still relies on coal and cannot achieve truly pollution-free power generation

In addition, due to the addition of alkali metal compounds, there are high requirements for the safety of equipment and operating processes, which makes it a lot of practical problems to put it into use in a large area

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