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Re: WSJ: Big tech firms seeking power

  • From: william(at)
  • Date: Fri Jun 16 22:10:57 2006

On Fri, 16 Jun 2006, Alex Rubenstein wrote:

more like 154,000,000 BTU, /12000 or 12,798 tons.
Well, the bigger problem here is that a watt is a measure of
power (engergy/time) and a BTU is a unit of energy. There is no
dimensionless conversion factor between the two.

A Watt has no time constant. A watt is an amount of energy consumed at a moment (ie, a 60 watt light bulb), not an amount of energy over time (like a watt-hour; for instance, a 60 watt light bulb uses 60 watt-hours of power every hour, or 1.44 kwatt-hrs per day).
Since you like Wikipedia so much, why don't you look it up:

Watt is not amount of power but amount of power produced during time, i.e.
its speed of energy consumption.

However kwatt-hour (I've never heard of watt-hour, but I suppose that
maybe used too..) is actually amount of energy consumed - more precisely
X kwr its how much energy device would consume if it were consuming energy at exactly the same speed of X kw for entire hour.

William Leibzon
Elan Networks
[email protected]