Abstract

Electromagnetic scaling is a kind of physics method of anti-scaling. An Anti-scaling instrument that generates electromagnetic fields to prevent scaling is designed in this study. The two important functions of the instrument are as follows: The output of a single frequency signal and its frequency and voltage can be changed manually; the output of a swept-frequency signal, from 0 to 21 kHz. The instrument is composed of a signal generator and coils in which electromagnetic fields are induced. The production of the signal mainly depends on the chip of CD4046B CMOS Micro power Phase-Locked Loop. According to the principle of electromagnetic induction, the signal from the signal generator flows though coils which induce changed magnetic fields, then the magnetic fields effect the microstructure of water, the aim of anti-scaling is achieved. The experiment shows that the equipment effectively reduces scaling.

Keywords:

Anti-scaling, electromagnetic field, phase-locked loop, swept-frequency,

References

1. Chen, C., Y. Wang and Y.Z. You, 2009. Design of electromagnetic field descaling instrument based on FPGA. Instrument Tech. Sensor, (08): 36-02.
   
2. Cho, Y.I., C.F. Fan and B. Choi, 1997. Theory of electronic anti-fouling technology to control precipitation fouling in heat exchangers. Int. Commun. Heat Mass, 24(6): 757-770.
   CrossRef    
3. Epstein, N., 1983. Thinking about heat transfer fouling: A 5*5Matrix. Heat Transfer Eng., 4(1): 43-56.
   CrossRef    
4. He, J., Z.Z. Zhao, Y.H. Li, G.C. Bai and H.Y. Zhao, 2010. Research status and progress in scale inhibition and removal by physical technology. Ind. Water Treatment, (09): 05-05.
   
5. Higashitani, K., A. Kage, S. Katamura, K. Imai and S. Hatade, 1988. Effect of magnetic field on formation of iron on calcium carbonate nucleation and growth. Langmuir, (5): 861-867.
   
6. Higashitani, K., A. Kage, S. Katamura, K. Imai and S. Hatade, 1993. Effect of a magnetic field on formation of CaCO3 particles. Colloid Interface Sci., 156(4): 90-95.
   CrossRef    
7. Lee, S.H. and Y.I. Cho, 2002. A study of physical water treatment technology to mitigate the mineral fouling in a heat exchanger. Ph.D. Thesis, Drexel University, Philadelphia.
   
8. Liu, R., 1999. A study of fouling in a heat exchanger with an application of an electronic anti-fouling technology. Ph.D. Thesis, Drexel University, Michigan USA.
   
9. Thackery, P.A., 1980. The cost of fouling in heat exchanger plant. Effluent Water Treat., 20: 112-115.
   
10. Wang, X.L. and S.K. Cheng, 2004. Scaling analysis and its applications of electrostatic micromotors. Harbin Inst. Technol., 11(02): 177-04.
    
11. Xing, X.K., C.F. Ma, Y.C. Chen, Z.H. Wu and X.R. Wang, 2006. Electromagnetic anti-fouling technology for prevention of scale. J. Cent South Univ., T., 01: 68-74.
    

Competing interests

The authors have no competing interests.

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