Experimental study on magnetic induction property of solenoid coil used in cooling water treatment system

Magnetic induction intensity is a critical factor to determine electromagnetic descaling effects. The current in a solenoid coil is an important parameter affecting the intensity of electromagnetic induction. In order to explore how winding pipe diameter, number of turns and frequency affect the current in the solenoid coil wrapped around the carbon steel pipes, the variation of the current with those factors is investigated by an experiment in which the method of series resistance is used. The peak current is obtained by measuring the voltage crossing series resistance. In this paper, the effect of series resistance on measuring current is analyzed. In order to reduce the influence of series resistance to electric current and ensure measurement reliability, 1.18Ω of the resistance is used for experimental measurements. The magnetic induction decreases with the increase of frequency and pipe diameter, and increases when the number of turns increases. The peak current decreases with the increase of frequency, number of turns, and pipe diameter, respectively. The results of this study show that the variation of the current in the solenoid coil wrapped around the carbon steel pipes can be affected by various factors, and design guidance for the power of electronic anti-fouling equipment is provided.