Research Papers: Thermal Systems

Derivation for Electric Current Regulation Equation of a Gradient Magnetic Field to Control Suspending Magnetic Particles Inside Dialysate Solution

[+] Author and Article Information
Junfeng Lu

Key Laboratory of Cryogenics,
Technical Institute of Physics and Chemistry,
Chinese Academy of Sciences,
29 Zhongguancun East Road,
Haidian District,
Beijing 100190, China
e-mail: junfenglu@mail.ipc.ac.cn

Wen-Qiang Lu

School of Engineering Sciences,
University of Chinese Academy of Sciences,
Beijing 100049, China
e-mail: luwq@ucas.ac.cn

1Corresponding author.

Presented at the 5th ASME 2016 Micro/Nanoscale Heat & Mass Transfer International Conference. Paper No. MNHMT2016-6331.Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received May 21, 2016; final manuscript received February 6, 2017; published online August 16, 2017. Assoc. Editor: Chun Yang.

J. Heat Transfer 140(1), 012801 (Aug 16, 2017) (4 pages) Paper No: HT-16-1288; doi: 10.1115/1.4037337 History: Received May 21, 2016; Revised February 06, 2017

To design a better adsorption performance in a novel magnetic adsorption device used for hemodialysis (HD), the mechanical properties of magnetic absorbents trapped inside a two-phase system are studied in this paper. A gradient magnetic coil field is assumed to produce the magnetic driving force that balances other hydraulic forces for the adsorbents. For this field, a related winding equation for the solenoid coil is obtained in our previous work; and a complement practical form of the winding equation is derived in this paper. Case studies are also described in this paper to explore the design aspects of the field.

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Grahic Jump Location
Fig. 1

The diagram of “re-absorption” dialyzer

Grahic Jump Location
Fig. 4

z∝n0I curves under different particle sizes (n0=10 k,I:1⇒10 A, and u¯f=100 ml/min)

Grahic Jump Location
Fig. 2

A suspended magnetic particle under equilibrium condition

Grahic Jump Location
Fig. 3

z∝n0I curves under different mean flow velocities (u¯f) (n0=10 k and I:1⇒10 A)



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