IE A067ECONOMIC EFFICIENCY CALCULATION APPROVED BY THE ENTERPRISE
Heat-supply units: lower current, quieter running, rarer bearing service
Phase current decreased, running noise fell, bearing maintenance became less frequent. 3.07 % — phase current of the 90 kW units, 130 → 126 A (2002).
calculation, approved
by the enterprise
Key result
| OBJECT | POWER | WHAT WAS MEASURED |
|---|---|---|
| Unit No. 1, 107 Pyrohova St. | 75 kW | Current on each phase before treatment and 180 h after it |
| Units No. 1-4, 1 Medvedeva St. | 90 kW | Current on each phase before treatment and 180 h after it |
| Other units of the enterprise | 75–630 kW | Running noise, interval between bearing services |
Phase current 180 hours after treatment
| OBJECT | BEFORE TREATMENT | AFTER 180 H | CHANGE |
|---|---|---|---|
| Unit No. 1, 107 Pyrohova St. (75 kW) | 126 A | 124 A | −2 A |
| Units No. 1-4, 1 Medvedeva St. (90 kW) | 130 A | 126 A | −4 A (3.07 %) |
Current was measured on each phase, mains voltage 380 V; the enterprise attributes the lower consumption to the reduced friction coefficient in the bearings.
Electricity saving over the heating season — calculation by the enterprise
| OBJECT | CURRENT REDUCTION | SAVING OVER THE HEATING SEASON | SHARE OF SAVING |
|---|---|---|---|
| Unit No. 1, 107 Pyrohova St. | 2 A | 3597.3 kWh | 1.58 % |
| 1 Medvedeva St. — two units | 4 A | 14 389 kWh | 3.07 % |
The saving was calculated by the enterprise with the formula E = 1.73·U·I·n·cos φ·k at U = 380 V, n = 2880 h of operation over the heating season and cos φ = 0.95.
Conclusion of the enterprise
Current equivalent
Revitalizant gel for compressors and bearings →
Piston, screw and centrifugal compressors; rolling and sliding bearings running in an oil bath; machine-tool spindle units and slideways.
How such units are treated:
About this result:
Limits of this report: The results relate to units with 380 V electric drives rated 75–630 kW at the sites of VOK PTM Vinnytsiateplokomunenergo; with other units and operating modes the figures may differ.