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Project
Summary Sheet
Project Objective:
Cooling
Tower Automation
Project Summary:
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The
#2 Ladle Metallurgical Facility (LMF) utilizes three electrodes, which are
lowered into the ladle and arced to bring the liquid steel up to a desired
casting temperature. Water is
used to cool the ladle hood and associated equipment during operation.
An adjacent Cooling Tower facility provides treatment of the
re-circulating cooling water. |
 | Provided
electrical design and supervised installation of temperature,
hardness, pH and flow meters and water control valves; initial
calibration and verification of all sensors and valves; an
Allen-Bradley PLC5 was used to completely automate Cooling Tower
operation |
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 |
 | Normal
operation of two out of the three main water pumps is cycled
periodically to distribute usage |
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 | Control
of two main air-moving fans to cycle as required by water temperature;
no fans for “cool” water, one fan for “warm” water, and two
fans for “hot” water |
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 | Monitoring
of water flows, temperature differentials, water hardness and pH (blow-down
and make-ups as required), water clarity (dispensing of detergent compound
as required), and well water level (make-up as required) |
 | The
operator interface was implemented with Allen-Bradley ControlView |
Economic Summary:
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Load-dependent
cycling of water pumps and air-moving fans maximizes equipment efficiency,
helps minimize maintenance, and prolongs equipment life thru reduced wear
and tear |
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Maximized
long-term cooling efficiencies by preventing pipe restrictions from algae
and calcium deposits thru detergent additions and pH control (also reduces
corrosion) |
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Reduced
water costs from minimized blow-down frequency thru detergent additions to
maintain water clarity |
671 Columbia Rd., Suite 8, P.O. Box 450858, Westlake, OH 44145-0858
· (440) 899-1676
Fax (440) 899-9267
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