In order to assist in the economic evaluation of the performance of the present work, mechanical power consumed in rotating discs was measured experimentally under different conditions by means of a watt meter. Table 2 shows the following results:

1. power consumption increases with increases disc rotational speed;

2. power consumption increases with degree of roughness.

Table 2

Mechanical power consumption at different degrees of roughness

Degree of roughness, mm
1234
rpmPower consumption, WFlat disc
100 279 287.8 295 302 153
200 290 304 312.6 322.4 164
300 306 319 328.4 334.1 172
400 323 334 340.9 350.5 180
500 345 350 357 362.1 189
Degree of roughness, mm
1234
rpmPower consumption, WFlat disc
100 279 287.8 295 302 153
200 290 304 312.6 322.4 164
300 306 319 328.4 334.1 172
400 323 334 340.9 350.5 180
500 345 350 357 362.1 189

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