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You may also be interested in
RTD, Cable, Resistive temperature detector, Cartridge heater, Temperature limiter
Text version of the page
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Application Guide
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Electric Heaters
Select Heater Type, Size and Quantity
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Example: A plastic extrusion barrel is operating 40 hours per week. Five band heaters are utilized, 1000 watts each. Energy cost $0.07/kWH. Assume one shift operation or 2080 hours per year Actual power usage is as follows:
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Case 1: Shrouded and Uninsulated = 4.06 kW/H
Annual Energy Cost:
2080 Hours -4.06 kW/H -$0.07/kWH = $591.00
Replacement Cost:
5 Heaters - $12.00 Each = 60.00
4 Hours Labor to Install - $20.00/hr = 80.00
4 Hours Lost Production Time - $50.00/hr = 200.00
Total/Year = $931.00
Case 2: Shrouded and Insulated = 2.38 kW/H
Annual Energy Cost:
2080 Hours -2.38 kW/H - $0.07/kWH = $346.00
Replacement Cost:
Same as Case 1 = 340.00
Total/Year = $686.00 Here, the cost of operation is much less when insulation is used.
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(D 0)
F*
(D
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