Comparing the Eddy Current Generation Between North -South Array and Halbach Array for Magnetic Induction Heating Element

Overview

This project aims to use an eddy current generator using a Halbach array to create a sustainable heating element for water desalination and test the effectiveness of a north-south array versus a Halbach array. A Halbach array having nearly double the magnetic field on one side of the array will allow the eddy current generator to heat the copper plate to a higher temperature faster than the north-south array. Temperatures were measured every minute for 15 minutes on the copper plate exposed to eddy currents from the rotating north-south array and the Halbach array. At 10V input, the copper plate in the north-south array increased from a temperature of 24.78℃ to a final temperature of 39.11℃ while in the Halbach array increased from 24.61℃ to 94℃. At 15V input, the copper plate in the north -south array increased from a temperature of increased from a temperature of 25.28 ℃ to a temperature of 60.72 ℃, while in the Halbach array, it increased from 24.89℃ to a high temperature of 115.89℃. In conclusion, the hypothesis was proven correct as the Halbach array, having nearly double the magnetic field on one side of the array, allowed the eddy currents generated in the copper plate to increase the copper plate to a higher temperature and at a faster rate than the north-south array. The higher temperature and faster rate mean that the Halbach array does provide more efficient heating of nonferromagnetic thermal conductive materials than a north-south array.

Competition history

• JSHS 2024 Category not listed

Resources

• National JSHS abstract book ↗

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