1. Personnel Heating Systems: In extremely cold environments (-30℃), circulating hot water provides continuous heating to the underground working face, ensuring worker efficiency. Actual test data from a large coal mine shows that after using this equipment, the underground working face temperature increased by 15℃, and the rate of worker operational errors due to low temperatures decreased by 40%.
2. Equipment Freeze Protection: Preheating the hydraulic systems of critical equipment such as hydraulic supports and conveyors prevents oil solidification that could lead to equipment failure. For example, a metal mine used increased safety electric heaters to heat the hydraulic station of the conveyor in winter, reducing the equipment failure rate from 3 times per month to 0.5 times.
3. Gas Pipeline Heating: Installing electric heating belts in gas extraction pipelines prevents gas from condensing and clogging the pipeline due to low temperatures. Actual tests at a coal mine show that after using the heating system, gas extraction efficiency increased by 25%, saving over one million yuan in annual maintenance costs.