Work

Impact of Monthly Load Variability on the Energy Consumption of Twin Belt Conveyors in a Lignite Mine

Year: 2025

Type: article

Abstract: This study examines the influence of average monthly load variations on the unit energy consumption indicator (ZE) of belt conveyors, defined as the energy required to transport 1 Mg of bulk material (coal) over a distance of 1 km. The analysis is based on energy consumption data from twin belt conveyors operating in a Polish lignite mine over four years. Monthly records included transported mass, conveyor operating time, energy consumed, and atmospheric conditions (temperature and humidity). The results indicate statistically significant differences in ZE between the analyzed conveyors. A relative increase in average load by 35% (from 2000 Mg/h) corresponded to a 26% reduction in ZE, with a specific decrease of 90 Wh/Mg/km. The findings highlight that optimizing conveyor load distribution can significantly reduce energy consumption—by up to 30%. These insights underscore the potential for energy savings through better conveyor load management without requiring significant infrastructural investments.

Source: Energies

DOI: 10.3390/en18082003

Authors: Mirosław Bajda, Leszek Jurdziak, Zbigniew Konieczka

Institutions: Wrocław University of Science and Technology, Polska Grupa Energetyczna (Poland)

Language: English

Topic: Belt Conveyor Systems Engineering

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Industry, innovation and infrastructure, Affordable and clean energy

Open Access status: gold

Estimated APC paid: $3,137