Heat-supply units: lower current, quieter running, rarer bearing service

VOK PTM Vinnytsiateplokomunenergo · approved by General Director V. F. Zherdetsky; signed by Head of the Technical Department L. V. Gulkina and Energy Facilities Manager A. I. Kravchenko

Vinnytsia, Ukraine · units treated since November 2000 · calculation approved 20.03.2002

PRODUCTXADO revitalizantstreatment performed by TOV VV Tekhnolohiya without dismantling the units

TREATED EQUIPMENT32 units with 380 V electric drivesrated 630 · 315 · 200 · 110 · 95 · 75 kW · bearings treated

DOCUMENT TYPEEconomic efficiency
calculation, approved
by the enterprise

Key result

↓3.07%

phase current of the 90 kW units, 130 → 126 A

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

180 hours after the treatment the enterprise recorded a significant drop in the running noise of the units and a drop in electricity consumption — a consequence of the reduced friction coefficient in the bearings. The programme has been running since November 2000, with 32 units treated in total; the enterprise keeps monitoring them and periodically takes documented measurements of electricity consumption. The calculation approved by VOK PTM Vinnytsiateplokomunenergo on 20 March 2002 states: 1. The use of XADO technology led to a reduction of electricity consumption on the treated units by 2.32 %. 2. The use of XADO technology made it possible to extend the interval between repeat bearing services.

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. The original document with signatures and stamp is published in full and available for download.

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: Bearings

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