What specific category of pump is implemented to circulate liquid metal inside liquid-metal-cooled reactors_________________?
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Answer: D. electromagnetic
Explanation
Electromagnetic pumps circulate electrically conductive liquid metal coolants without utilizing any mechanical moving parts. These pumps apply Lorentz forces generated by interacting magnetic fields and electric currents within the fluid. This specialized design prevents mechanical seal failures in harsh liquid metal operating environments. Liquid metals like sodium or sodium-potassium eutectic are excellent electrical conductors unlike ordinary water. Electromagnetic pumping utilizes Faraday law of induction principles to move conductive fluids smoothly. The absence of rotating impellers eliminates major maintenance concerns associated with high-temperature loops.
Fast breeder reactors utilize liquid metal coolants to achieve high power densities and efficient heat transfer. Reliable coolant circulation is critical to prevent core overheating and maintain safe operating temperatures. Electromagnetic pumps ensure continuous coolant flow even under severe mechanical stress and thermal conditions. Centrifugal pumps require rotating impellers and mechanical seals that fail in liquid metal environments. Axial flow pumps also rely on internal spinning blades vulnerable to thermal warping and corrosion. Reciprocating pumps use moving pistons and valves that cannot withstand corrosive liquid metal coolants.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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