On (29 Oct 96) Ralph Hartwell wrote to James Di Paulo...
 JDP> How does one calculate or measure the phantom power consumed
 JDP> by
 RH> things like JDP>TV's, VSR's, Steros and telephone answering
 RH> equipment when on standby or JDP>idle? What about computers,
 RH> say a 100 mg with all the attachmants (assume JDP>sound
 RH> blaster, printers, etc turned off)?
 RH> It isn't phantom - it's real power consumed by those devices.
 RH> You pay for it every month when you get your electric bill.
Yes, it is REAL, but these unseen loads are commonly called "phantom
loads", in the RE world at least. They are called that because they
are drawing power even when we think of them as "off".
 RH> The 10 KW is constant output, so if the machine runs for one
 RH> hour, you have generated 10 Kilowatt Hours of power.
 RH> Therefore:
 RH> 10KW output X 24 hrs/day = 240 KWH per day 240 KWH X 30 days =
 RH> 7200 KWH per month 7200 KWH X $0.08 (my cost) = $576.00 per
 RH> month value
Right on.
 RH> Of course, that is not realistic, as you mentioned, because
 RH> you won't get 100% output 100% of the time, unless you happen
 RH> to have a hurricane passing close by.
It is unrealistic in any case. No wind machine puts out its maximum
continuously, since no place has a constant wind of 25 mph or
thereabouts. Wind is very variable. The best measure, AFAIK, is to
get data from someone in your area who has a wind machine and a
cumulative amphour meter.
We have a 1 kW wind machine. If it ran at full output for a year, it
would generate (check my math) 1 X 24 X 365 = 8760 kWh. In fact, it
generated 258 kWh last year. Ours is not a fantastic wind site, but
it is not awful either, and the machine makes a real contribution to
our system, making about 25% of our power.
Take care,
                        Ian
... Ask not for whom the bell tolls; let the machine get it.                  
 
... "Listen.  Take a moment now and listen.  [Sound of ripping paper.] That's
the sound of what the United States Congress has been doing to  the
Constitution..." -- Mike Godwin 12-12-1995, San Francisco
--- PPoint 1.96
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