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Development of an apparatus for removing magnetic sludge by permanent magnets setup in the condenser of the power plant

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Abstract

In this paper, permanent magnets are used to remove magnetic sludge in the condenser of the power plant. To obtain the flow characteristics and magnetic information that are needed for determining a proper design of the magnetic sludge removal apparatus, we performed numerical simulations through the use of two commercial codes, ANSYS Workbench-Emag and CFX. We also performed experiments on various kinds and sizes of magnets to obtain the magnetic information through a gauss meter. By analyzing the results of simulations and experiments, the minimum magnetic force that is able to remove the any size of the magnetic sludge in the condenser was calculated, and the design of the removal apparatus was confirmed. We made the test model which was confirmed by the simulations and experiments for the tests of efficiency of the removal apparatus. After testing, the test results were compared with those of numerical simulations and have good agreements.

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Abbreviations

A :

surface area of the magnetic sludge(cm2)

F :

magnetic force

ρ :

density

u i :

velocity

P :

pressure

µ:

viscosity coefficient

H e :

total enthalpy

h :

isovolumetric enthalpy

T :

temperature

τ ij :

stress tensor

P tot :

total pressure

P stat :

static pressure

U :

velocity vector

F p :

force on the magnetic sludge due to the flow

F min :

minimum magnetic force that is able to remove the magnetic sludge

H :

magnetic field intensity

B :

magnetic flux density

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Authors and Affiliations

  1. School of Mechanical Engineering, Pusan National University, San30, Jangjeon-dong, Geumjeong-gu, Busan, South Korea, 609-735

    Jun-Ho Bae & Beom-Cheol Hwang

  2. Research Institute of Mechanical Technology, Pusan National University, San30, Jangjeon-dong, Geumjeong-gu, Busan, South Korea, 609-735

    Moon-Saeng Kim & Chul Kim

Authors
  1. Jun-Ho Bae
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  2. Moon-Saeng Kim
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  3. Beom-Cheol Hwang
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  4. Chul Kim
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Correspondence to Chul Kim.

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Bae, JH., Kim, MS., Hwang, BC. et al. Development of an apparatus for removing magnetic sludge by permanent magnets setup in the condenser of the power plant. Int. J. Precis. Eng. Manuf. 11, 299–307 (2010). https://doi.org/10.1007/s12541-010-0034-z

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  • DOI: https://doi.org/10.1007/s12541-010-0034-z

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