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In article <124@kc2wz.bubble.org> bob@kc2wz.bubble.org (Bob Billson) writes:
>From: bob@kc2wz.bubble.org (Bob Billson)
>Subject: how do you figure out cost per kilowatt-hour?
>Summary: need for figure out costs for power consumption
>Date: 31 Aug 92 20:28:42 GMT
>I need to determine how much some particular electronic is costing me to run.
>For the sake of example, I need to know the cost of running something consuming
>100 watts, all day long, all month long.  I know the cost the power company
>charges per kilowatt-hour.  Can someone provide an equation to convert the
>equipment's power rating to kilowatt-hours?
>
>Simply using:
>
>         (power_rating/1000) * hours_used * days_used
>
>does not work out correctly (or so it seems).  Help? :-)  Thanks
>
>       Bob
>-- 
>  Bob Billson, KC2WZ                          | internet: bob@kc2wz.bubble.org
>                                              |           kc2wz@amsat.org
>  $nail:  21 Bates Way,  Westfield, NJ 07090  | uucp:     ...!uunet!kc2wz!bob
>                  C code.  C code run.  Run code run...<please!>

Equipment power rating is Watt-hour, so kilowatt-hour is watt-hour/1000.
Of course this is for resistive loads like light bulb, iron, toaster,....

      (power-rating/1000) * hours_used * cost $/kwatt-hour =total cost $.

units:       kwatt        *    hour    *      $/kwatt-hour = $.



Peace and Prosperity!
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