FLOMATCHER/MARATHON

SPECIALISTS IN VARIABLE SPEED MOTOR CONTROL SYSTEMS

TYPICAL COST SAVINGS EXAMPLE:

WATTMISER™ VS. EDDY CURRENT DRIVE

RATING:                                                                                                     1000 HP

AVERAGE OPERATING SPEED:                                                           80%

PRESENT POWER COST                                                                        $.06/KWH

OPERATING HOURS PER DAY                                                             24

WATTMISER EFFICIENCY @ 80% SPEED                                          .90

EDDY CURRENT DRIVE EFFICIENCY  @ 80% SPEED                    .68

OUTPUT HP = (.80)³ x 1000 = 512 HP

INPUT HP:

    EDDY CURRENT DRIVE = 516/.68 = 753 HP

    WATTMISER                       = 512/90 = 569 HP

                                                 SAVINGS = 148 HP

KWH SAVINGS:

    PER HOUR = 184 HP x 746 KW/HP = 137 KW

    PER YEAR = 137 KW x 24 HR/DAY x 365 DAY/YR = 1,200,120 KWH

$ SAVINGS:

    PER YEAR 1,200,120 KWH/YR x $.06/KWH = $72,007

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Last modified: June 19, 1998