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Metals Industry Savings Overview
The steel industry is energy intensive with many opportunities to apply advanced controls to save energy. Some of the possible energy saving applications in a steel mill and the potential annual savings are illustrated in the figure below.
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Energy saving systems typically use variable frequency drives, mill feedback data, and expert mill operation knowledge to precisely control and reduce the energy flows through the equipment. Some of the actual savings achieved by TMEIC on hot strip mills in Japan are shown below.
Main Motor Cooling Fan. Energy savings of 7,761 MWh/y, through speed control of the cooling fan based on the load on the motor, winding temperature, and air temperature.
Auxiliary Motor Cooling. Energy savings of 2,176 MWh/y, through speed control of the cooling fan based on the load on the motor, winding temperature, and air temperature.
Fume Exhaust Fan. Energy savings of 3,973 MWh/y, through fan speed control based on the exhaust air flow.
Cooling Water Pump. Energy savings of 5,017 MWh/y, through pump speed control based on the tank level and calculated flow of cooling water to the run out table.
Scale Pit Pump. Energy savings of 1,319 MWh/y, through pump speed control based on position of the slab relative to the descaler.
For more information about our many energy saving applications, please contact metals@tmeic.com, or call TMEIC at 540-283-2100.
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