Study of Electric Field Impact on Crystallization in Tunnel Drainage Pipes in Hard Water Area

Table 2

Summary of testing parameters of axial distribution law of pipe crystals.

Test control item	Control parameters
Lab temperature	25°C
Single pipe length	10 cm
Pipe quantity	12 sections
Current speed in pipe	0.68 m/s
Output voltage	5 V/12 V/24 V
Electric field direction	Radial to circle center (circumferential field)
	Bottom to top parallel type (parallel plate field)
Pipe inside flow status (CO2touch areas)	Full-flow status (ideal touch areas of 0)